Wednesday, May 6, 2020
Engineering Drawing Short Questions Free Essays
Define engineering drawing. Why drawing is called universal language of engineers? Ans1:-A drawing drawn by an engineer having engineering knowledge for the drawing purposes is an engineering drawing. It is meant for communicating his ideas, thoughts and designs to others. We will write a custom essay sample on Engineering Drawing Short Questions or any similar topic only for you Order Now Engineering drawing is a starting point of all engineering branches such as Mechanical, Production, Civil, Electrical, Electronics, Computer science, Chemical etc. It is spoken, read, and written in its own way. Engineering drawing has its own grammar in the theory of projections, its idioms in conventional practices, its punctuations in the types of lines, its abbreviations, symbols and its descriptions in the constructions. Q2 ââ¬â Name different types of drawing instruments. Ans2 ââ¬â Drawing board, T-square, Set Square, Scales, Pencil and sand paper block, Drawing pins or cello-tape, Duster or handkerchief, eraser etc. Q3 ââ¬â Why pencil is rotated in finger while drawing a long line? Ans3 ââ¬â The pencil is rotated in finger while drawing a long line in order to get a line of uniform thickness throughout. Q4 ââ¬â How will you test the set square and T-square? Ans4 ââ¬â Testing of T-square ââ¬â (i) Check all screw heads and tighten, if necessary (ii) In order to check the T-square, first of all draw a horizontal line. Now reverse the T-square and again draw a horizontal line with working edge. If both the lines coincide with each other, then the working edge of Tsquare is alright. If there is a difference in two lines, then working edge is not correct and the line gives twice the error of the working edge. This error should be rectified by scraping the edge with a scraper or a sharp knife. Testing of set-squares ââ¬â The straightness of edges of the set-square can be checked by drawing a vertical line. Then reverse the set-square and draw again vertical line. If there is any difference between the two vertical lines then working edge is not correct and the line gives twice the error. This error can be removed by straightening the edges by means of a scraper or sand paper. Q5 ââ¬â What are the standard sizes of drawing sheets according to I. S. I. and which is suitable for drawing work? Ans5 ââ¬â The standard size of sheets according to I. S. I. are A0(1189 X 841), A1 841 X 594), A2(594 X 420), A3(420 X 297), A4(297 X 210) and A5(210 X 148). Drawing sheet of size 594 X 420 i. e. A2 size is generally used by engineering students as it is very handy and easy for drawing work in class. Q6 ââ¬â What are the ways of sharpening a pencil for good and accurate work and which type of pencil is more suitable for drawing work? Ans6 ââ¬â There are two ways of sh arpening a pencil (i) a small piece of sand paper of zero grade, pasted upon a piece of wood. (ii) Sharpeners. Usually hard pencils such as H, 2H etc are used for making the engineering drawing. Q7 ââ¬â Why cello-tape is used instead of drawing pins, now a day? Ans7 ââ¬â Now a days, cello tapes are used in place of drawing pins for its practical convenience as the drafter, Tsquare and set-squares can be moved easily over the tape. Q8 ââ¬â What is layout of drawing sheet? Ans8 ââ¬â The selection of suitable scale and allotment of proper space for margin, title block, parts list, revision panel, folding marks etc. on the drawing sheet is known as layout of drawing sheet. Q9 ââ¬â Why is the layout of sheet is necessary? Ans9 ââ¬â Layout of the drawing on the drawing sheet is necessary in order to make its reading easy and speedy. The title blocks, parts list etc will provide all the required information. Q10 ââ¬â List out the contents of title block and material list Ans10 ââ¬â The title block should contain at least the following informations. (i) Name of the institution (ii) Name of title of drawing (iii) Name, Class and Roll no. of the student (iv) Scale (v) Drawing number (vi) Symbols denoting the method of projection Q11 ââ¬â What is the necessity of folding a drawing print? Ans11 ââ¬â Folding marks are made on the sheet to facilitate folding of prints for the purposes of filing and binding in the proper and easy manner. Q12 ââ¬â What do you mean by convention or code? Ans12 ââ¬â The representation of any matter by some sign or mark on the drawing is known as convention or code. The conventions make the drawing simple and easy to draw. Q13 ââ¬â What do you understand by thickness of lines? Ans13 ââ¬â There are three distinct thickness of lines used in engineering drawing. These lines are specified as thick, medium and thin lines. The line specified as thick is usually 3 times thicker and the line specified as medium is 2 times thicker than a thin line. Q14 ââ¬â Where and why a cutting plane is drawn in a drawing? Ans14 ââ¬â The section plane are generally perpendicular planes. The projection of a section plane, to which it is perpendicular, is a straight line. This line will be parallel, perpendicular or inclined to the x-y line. The cutting plane is drawn in a drawing to show the inner details of an object. Q15 ââ¬â What is the necessity of convention breaks and convention of materials? Ans15 ââ¬â Long members of uniform cross-section such as rods, shafts, pipes etc. are generally shown in the middle by the conventional breaks so as to accommodate their view of whole length on the drawing sheet without reducing the scale. The exact length of the member is shown by the dimension. Q16 ââ¬â Why the conventional representation of common features are adopted on the drawing? Ans16 ââ¬â The conventional representation of common features are adopted on the drawing to save the unnecessary time or space on the drawing. Q17 ââ¬â What are the main requirements of lettering? Ans17:- 1) The knowledge of shape and proportion of each letter. 2) The knowledge of the order and direction of the strokes used in making letters. 3) The knowledge of the general composition of letters. 4) The knowledge of rules for combining letters into words and words into sentences. Q18 ââ¬â What is lettering? Ans18 ââ¬â The art of writing the alphabets A, B, C,â⬠¦Ã¢â¬ ¦. Z and numbers such as 1, 2, 3â⬠¦Ã¢â¬ ¦0 etc. is known as lettering. Q19 ââ¬â What do you mean by composition of letters? Ans19 ââ¬â The composition means the composing of letters into words and words into sentences. The letters are so arranged that the open area between two letters of a word appears equal to the eye judgement. Q20 ââ¬â What do you mean by uniformity of letters? Ans20 ââ¬â The uniformity of lettering means keeping the height, inclination, spacing and strength of letters to be same. It is very essential for good lettering in engineering drawing. Q21 ââ¬â What do you mean by normal, compressed and extended lettering? Ans21 ââ¬â Normal lettering: ââ¬â The normal lettering have normal height and width and are used for general purposes. The width of the normal letter is about 0. 67 times of the height of the letter. Compressed lettering: ââ¬â The compressed lettering are those which are written in the narrow space. These are used when the space is limited. The widths of the condensed letters are less than height. Extended lettering: ââ¬â The extended lettering are those which are wider than noramal letters but of the same height. Q22 ââ¬â What are the guidelines and why they are necessary in lettering? Ans22:- The lines which are used to regulate the height and inclination to the letters and numerals are known as guidelines. These are to be drawn at random. The guidelines are used to regulate the uniformity of the letters. Q23 ââ¬â What do you mean by single stroke letters? Ans 23:- Single stroke letters means that the thickness of the line of the letter should be such as is obtained in one stroke of the pencil. Single stroke letters are of two types. 1) Vertical 2) Inclined (75deg. With horizontal) Q24 ââ¬â What is the gothic and roman lettering? Ans24 ââ¬â Gothic lettering ââ¬â The lettering in which all the alphabets are of uniform width or thickness is known as gothic lettering. It can be divided into following groups. (i) Vertical or Upright vertical gothic lettering (ii) Inclined or Italic gothic lettering Roman lettering ââ¬â The lettering in which all the alphabets are composed of thick and thin elements is known as roman lettering and can either be vertical or inclined. Q25 ââ¬â What do you mean by freehand lettering? Ans25 ââ¬â The art of writing the alphabets without the use of drawing instrument is called freehand lettering. The freehand lettering is of the following types. a) Vertical or upright freehand gothic lettering. (i) Single stroke vertical freehand gothic lettering. (ii) Lowercase vertical freehand gothic lettering. (b) Inclined or italic freehand gothic lettering. (iii) Single stroke italic freehand gothic lettering. (iv) Lower case italic freehand gothic lettering. Q26 ââ¬â What should be the grade of pencil used for lettering? Ans26 ââ¬â HB and H grade pencils sharpened to a conical point should be used for lettering. To keep the stroke of the letters uniform, the pencils should be rotated between the thumb and fingers while lettering. Hard pencils such as 2H or 3H should be used to draw guidelines. Q27 ââ¬â What is the importance of dimensioning? Ans27:-1) Dimensioning expresses all the sizes and other information necessary to define the object. 2) It must be done with due regard to manufacturing processes and inspection requirements. 3) The dimensioning also includes expression of tolerances necessary for the correct functioning of the part given to be assembled. Q28 ââ¬â What is dimensioning? Ans28 ââ¬â The art of writing the various sizes or measurements on the finished drawing of an object is known as dimensioning. Q29 ââ¬â What do you understand by the term notation of dimensioning? Ans29 ââ¬â The notation of dimensioning consists of dimension lines, extension lines, arrow heads, dimension figures, notes, symbols etc. Q30 ââ¬â What is a leader or pointer line? How a leader should be drawn? Ans30 ââ¬â A leader is a thin continuous line drawn from note of the figure to show where it applies. It is terminated by an arrow head or a dot. The arrow head touches the outline, whereas the dot is placed within the outline of the object. The leader is generally drawn at any convenient angle, usually 30? , 45? , and 60? but not less than 30?. Q31 ââ¬â Explain with the help of a simple sketch (i) size dimensions (ii) location dimensions. Ans31 ââ¬â Size dimension ââ¬â The dimensions which indicate the various sizes of the object such as length, breadth, diameter etc. are known as size dimensions. These dimensions are represented by letter ââ¬ËSââ¬â¢. Figure. Location dimension ââ¬â The dimensions which locate the position of one feature w. r. t. the other feature are known as location dimensions. Distances between the centre lines of the holes from the edges are given by location dimensions. These dimensions are marked by letter ââ¬ËLââ¬â¢. Figure. Q32 ââ¬â What are the aligned system and unidirectional system of dimensioning? Or What are the different methods of dimensioning? Ans32:-1) Aligned Method: ââ¬â In aligned system, the dimensions shall be placed parallel to and above the dimension lines, preferably in the middle and not by interrupting the dimension lines. Here the dimensions can be read from the bottom or from the right side of the drawing. Figure. 2) Unidirectional Method: ââ¬â In this system dimensions shall be horizontally placed so that they can be read from the bottom of the drawing sheet. Here the dimension lines may be interrupted preferably near the middle for the insertion of dimensions. Figure. Q33 ââ¬â What are the general rules of dimensioning? Ans33:-1) Every dimension must be given, but no single dimension should be repeated. 2) Dimensions should be placed outside the views. 3) Avoid dimensioning to hidden lines wherever possible. 4) Dimension lines should not cross any other line of the drawing. 5) Aligned system of dimensioning is recommended. Q34 ââ¬â Explain with simple sketches, the methods of dimensioning (i) circles (ii) radii (iii) angles (iv) spherical shapes (v) holes. Ans34 ââ¬â Q35 ââ¬â Explain with the help of sketches (i) chain dimensioning (ii) parallel dimensioning and (iii) combined dimensioning. Ans35 ââ¬â Chain Dimensioning ââ¬â In this system, dimensions are arranged in a straight line. Figure. Parallel dimensioning ââ¬â In this arrangement, all the dimensions are given from common base line. The smaller dimensions are placed nearer the view and the larger further away so that the extension lines do not cross dimensions lines. Figure. Combined dimensioning ââ¬â Combined dimensioning is the result of the simultaneous use of chain and parallel dimensioning. Figure. Q36 ââ¬â What is a scale? Ans36:-A scale is defined as the proportion by which we either reduce or increases the actual size of the object on a drawing. ) Full size scale:-The scale in which the actual measurements of the object are drawn to same size on the drawing is known as full size scale. 2) Reducing scale: ââ¬â The scale in which the actual measurements of the object are reduced to some proportion is known as reducing scale. 3) Enlarging scale: ââ¬â The scale in which the actual measurements of the object are increased to some proportion is known as enlarging scale. Q37 ââ¬â What is the representative fraction (R. F. ) or scale factor (S. F. )? Ans37:-The ratio of the drawing size of an object to its actual size is called the Representative fraction. R. F. = Dimension of an object on sheet / Actual dimension of an object Q38 ââ¬â What are the main uses of scale? Ans38 ââ¬â The following are the main uses of scale in engineering practice. (i) The scales are used to prepare reduced or enlarged size drawings. (ii) The scales are used to set off dimensions. (iii) The scales are used to measure distances directly. Q39 ââ¬â What are the information necessary for scale? Ans39 ââ¬â To construct a scale, the following informations are necessary. (i) The representative fraction (R. F. ) of the scale. (ii) The units to be presented either in metric or British measures. iii) The maximum length of the scale. Q40 ââ¬â What is difference between plane scale and diagonal scale? Ans40:-Plain Scale:-A plain scale is simply a line which is divided into a suitable number of equal parts, the first of which is further sub-divided into small parts. It is used to represent either two units or a unit and its fraction such as km and hm , m and dm, etc. Diagonal Scale:- A diagonal scale is used when very minute distances such as 0. 1 mm etc. are to be accurately measured or when measurements are required in three units; for example dm, cm, and mm. Q41 ââ¬â What is the principle of a diagonal scale? Ans41: ââ¬â The principle of diagonal scale is to divide a short line into any number of equal parts by following the diagonal divisionââ¬â¢s method of construction. Q42 ââ¬â What is the difference between a quadrilateral and a polygon? Ans42 ââ¬â Quadrilateral ââ¬â A quadrilateral is a plane figure bounded by four straight lines and containing four angles. Polygon ââ¬â A polygon is a plane figure bounded by more than four straight lines and containing more than four angles. Q43 ââ¬â What is the difference between a parallelogram and a rhombus? Ans43 ââ¬â Parallelogram ââ¬â A parallelogram is a quadrilateral in which the opposite sides are equal and parallel. Rhombus ââ¬â A rhombus is a quadrilateral in which all the sides are equal and the angles are not right angles. However, in this case the opposite angles are equal. Q44 ââ¬â What is the difference between regular and irregular polygons? Ans44 ââ¬â Regular polygon ââ¬â A regular polygon is a plane figure in which all the sides and angles are equal. Irregular polygon ââ¬â An irregular polygon is a plane figure in which all the sides and angles are not equal. Q45ââ¬â Name the principal planes of projections. Ans45:-There is two planes employed for projection and are known as reference planes or principle planes of projections. These planes intersect at right angles to each other. These are 1) Vertical plane: ââ¬â The plane which is vertical is called vertical plane and is denoted by V. P. Vertical plane is also known as Frontal Plane as front view is projected on this plane. 2) Horizontal plane:-The plane which is horizontal and at right angle to the V. P is called Horizontal Plane and it is denoted by H. P. Q46:- What is the principle of projection? Ans46:-If straight lines are drawn from various points on the contours of an object to meet a plane, the object is said to be projected on that plane. The figure formed by joining in correct sequence the points at which these lines meet the planes is called the projection of the object. Q47 ââ¬â What is ground line (G. L. ) or intersection or reference line? Ans47:-The line of intersection of two principle planes of projections i. e. VP and HP is called reference or intersection or ground line and is denoted by x-y line. Q48 ââ¬â What is an auxiliary view? Ans48:-The view obtained on the auxiliary plane which is parallel to the inclined surface of an object is called auxiliary view. Q49 ââ¬â What do you understand by missing lines? Ans49 ââ¬â The lines which are added in the given orthographic projection in order to complete the drawing of an object are called missing lines. Q50 ââ¬â What do you understand by missing views? Ans50 ââ¬â The view which is added in the given orthographic projections in order to complete the drawing of an object is called missing views. Q51 ââ¬â What is a sectional view? Why sectional views are used in drawing? Ans51 ââ¬â The view obtained after cutting the object in order to show the inner details by an imaginary cutting plane is known as sectional view. Sectional views are used in drawing to show the interior details of the object, which are not visible to the observer from outside. Q52 ââ¬â What is a cutting plane or section plane? Ans52:- The imaginary plane by which the object is assumed to be cut is called the cutting plane or sectional plane. They may be perpendicular or parallel to one of the principle planes and either perpendicular or inclined to the other plane. These planes are represented by their traces. Q53 ââ¬â What are section or hatching lines? Ans53 ââ¬â The lines used to represent the material which has been cut by the cutting plane are called section lines. They are also called hatchings or crosshatchings. These are equally spaced lines inclined at 45? to the horizontal. Q54 ââ¬â What do you mean by sections of solids? Ans54 ââ¬â the solids which are cut by the section planes to visualize the internal constructional details of the invisible features are known as section of solids. Q55 ââ¬â What is apparent section? Ans55:- The projection of the section on the plane to which it is inclined is called as apparent section. Q56 ââ¬â What is true section? Ans56:- The projection of the section on a plane parallel to the plane will show the true shape of the section. Q57 ââ¬â How will you classify sections of solids? Or What are the different positions of a section plane w. r. t. two reference lines? Or What are the types of sections of solids? Ans57:- 1) Section of solids obtained by horizontal planes. 2) Section of solids obtained by vertical planes. 3) Section of solids obtained by auxiliary inclined planes. 4) Section of solids obtained by auxiliary vertical planes. 5) Section of solids obtained by profile plane. Q58 ââ¬â What do you understand by V. T. and H. T. of section plane? Ans58 ââ¬â Horizontal trace (H. T) ââ¬â H. T. of a section plane is a line in which the plane meets the H. P. Vertical trace (V. T. ) ââ¬â V. T. of a section plane is a line in which the plane meets the V. P. Q59 ââ¬â What do you mean by Frustum? Ans59 ââ¬â When the section plane is parallel to the base plane of a cone or pyramid, it will form a frustum. Q60 ââ¬â What do you mean by truncated? Ans60 ââ¬â When the section plane is inclined to the base plane of a solid, it will form a truncated. Q61 ââ¬â What do you understand by intersection of surfaces? Ans61 ââ¬â The lines or curves which are formed when surfaces of two solids intersect with each other are known as intersection of surfaces or interpenetration of solids. Q62 ââ¬â What are the lines or curve of intersection or interpenetration? Ans62:- When a solid penetrates into another solid, their surfaces meet in a line called the line or curve of intersection or interpenetration. Q63 ââ¬â Give the practical applications of the intersection of surfaces or interpenetration of solids. Ans63:- It is used in (i) sheet metal shop (ii) pipe fittings (iii) boiler fittings (iv) aeroplane construction (e. g. wings, fuse lags etc. ) (v) Automobile layout works (e. g. body wheel house, chairs etc. Q64 ââ¬â Name the methods of plotting the lines of intersection or inter-penetration of solids? Ans64:- 1) Line method or piercing point method 2) Cutting plane method Q65:- How will you classify the intersecting surfaces? Ans65:-1) the intersection of plane surfaces 2) The intersection of two curved surfaces 3) The intersection of a plane surface and a curved surface Q66 ââ¬â What do you mean by development of surfaces? Ans66:- A layout of the com plete surface of a three dimensional object on a plane surface is called its development or pattern. Q67:- What is stretch out or girth line? Ans67:- The stretch out or girth line is the length of the pattern or development and is given by the perimeter of the object measured in a plane at right angles to the axis. This term is used in patterns of objects having a constant cross section for their full length. e. g. prisms and cylinders. Q68 ââ¬â What is the principle of development? Ans68 ââ¬â The development is based on the principle which indicates that every line on the development must show the true length of the corresponding line on the surface of the object for which development is required. Q69 ââ¬â What are the different methods of development of surfaces? Ans69:- 1) Parallel line development 2) Radial line development 3) Triangulation development 4) Approximate method Q70 ââ¬â Why the true lengths of slant edges are determined? Ans70 ââ¬â The true length of slant edges are determined because every line on the development must show the true length of the corresponding line on the surface of the object to be developed. Q71 ââ¬â What are the applications of development of surfaces? Ans71:- It is used in the fabrication of simple to highly complicated shapes from flat surfaces in sheet metal shops, in the construction of boilers, pattern making, tunnels, buckets, chimney etc. Q72 ââ¬â What is a point? Ans72 ââ¬â A point is that which has simply position but no magnitude. It is generally represented by a very small circle or dot. Q73 ââ¬â What do you mean by octants? Ans73 ââ¬â When the three planes i. e. H. P. , V. P. and P. P. divide the entire space into eight quadrants, then these quadrants are known as octants. Q74 ââ¬â What is the difference between first angle and third angle projection? Which angle projection is recommended by B. I. S. now a days? Or What are the types of orthographic projections? Ans74:-First angle projection:-In this projection the object is assumed to be ituated in first quadrant, i. e. in front of V. P and above HP the projections obtained on these planes is called first angle projection. The symbol for the first angle projection is Figure. Third angle projection: ââ¬â In this Projection the object is assumed to be situated in the third quadrant that is below HP and behind VP . The front view comes below the XY line and the top view above it. The symbol for the third angle projection is Now a day we are working with first angle projection because it is recommended by the B. I. S and it is adopted by almost all the countries of the world since 1983. Figure. Q75 ââ¬â Why the projections of an object is not drawn in second and fourth quadrants? Ans75 ââ¬â The projections of an object is not drawn in second and fourth quadrants because the overlapping will take place. It will become very difficult to understand the views. Q76 ââ¬â When the auxiliary planes are used? Ans76 ââ¬â The auxiliary planes are used in order to view the true shape of an inclined surface. The projection drawn on the auxiliary plane is known as the auxiliary view and gives the true shape of the inclined surface. Q77 ââ¬â What are the types of auxiliary planes? Ans77:-The plane placed at any angles to the principle planes is called auxiliary plane. Auxiliary planes are of two types. 1) Auxiliary vertical plane (A. V. P. ):-It is perpendicular to the HP and inclined to the VP. Projection on an AVP is called auxiliary front view. 2) Auxiliary inclined plane (A. I. P. ):-It is perpendicular to the VP and inclined to the HP. Projection on AIP is called auxiliary top view. Q78 ââ¬â Define a straight line. Ans78 ââ¬â A straight line is defined as the shortest distance between the two points. Q79:- What is true length of a line? Ans79:-When a straight line is inclined to one plane and parallel to the ther, its projections on the plane to which it is parallel will show its true length. Q80 ââ¬â What do you mean by projections of a straight line? Ans80:-To draw the front view, top view and side view of a straight line is called projection of a straight line. Q81:- What is inclination of a straight line? Ans81:-It is defined as the angle which the line makes with the plane. As such a line has two inclinations i. e. inclination with the HP is represented by an angle and inclination of a line with VP is represented by an angle . Q82 ââ¬â What are the apparent angles of inclinations? Ans82 ââ¬â The angle made by the front view of a line with reference line (x-y line) is called apparent angle of inclination ?. The angle made by the top view of a line with reference line (x-y line) is called apparent angle of inclination ?. Q83 ââ¬â Name the methods to determine the true length and true inclinations of a straight line. Ans83:-The following methods are used when the line is inclined to both the reference planes. 1) Rotation method 2) Auxiliary plane method 3) Trapezoid method. Q84 ââ¬â What are skew lines? Ans84:-Any two lines that are not parallel with each other and do not intersect are called skew lines. Q85 ââ¬â What is the trace of a straight line? Ans85:-When a straight line is inclined to a plane, it will meet that plane, produced if necessary. The point in which the line or line produced meets the plane is called its trace. 1) Horizontal trace:-The point of intersection of the line with the HP is called the horizontal trace. 2) Vertical trace:-The point of intersection of the line with the VP is called the vertical trace. Q86 ââ¬â Define a plane. Ans86:-A flat surface generated by moving a straight line in space is called a plane. A plane fig. has only two dimensions i. e. length and breadth. Q87 ââ¬â What is the difference between a plane and a lamina? Ans87:-Plane:-A plane has no boundary and it extends to infinity in all directions. Lamina:-The plane which has limited extent is also known as lamina. Q88 ââ¬â What are the types of planes? Ans88:-There are two types of planes. 1) Perpendicular planes:-The planes which are perpendicular to one or both the reference i. e. VP and HP are called perpendicular planes. 2) Oblique planes:-The planes which are inclined to both the reference planes i. e. VP and HP are called oblique planes. Q89 ââ¬â What is the trace of a plane? Ans89:-The lines in which the planes meet the reference planes i. e. HP and VP are called the traces of the planes. There are two types of traces of planes. 1) Horizontal trace:-The intersection of a plane with the horizontal plane is called the horizontal trace. 2) Vertical trace:-The intersection of a plane with the vertical plane is called the vertical trace. Q90 ââ¬â What is a solid? Ans90 ââ¬â An object having three dimensions i. e. length, breadth and height is called a solid. E. g. Prisms, Pyramids, cone, cylinder etc. Q91 ââ¬â What are different types of solids? Ans91:- Solids may be divided into two main groups. ) Polyhedra or polyhedron: ââ¬â A polyhedra is defined as a solid bounded by planes called faces. Which meet in straight lines called edges? 2) Solids of revolution: ââ¬â The solids which are formed by the revolution of plane figures are known as solids of revolution. e. g. Cylinders, cones, sphere etc. Q92:- What are right solids? Ans92:- A solid is said to be a right solid if its axis is perpendicular to its base or its end faces. Q93 ââ¬â What are oblique solids? Ans93:- If the axis of a solid is inclined at an angle other than 90? to its base or end faces, it is called as an oblique solid. Q94:- What are regular solids? Ans94:- If all the edges of the base or the end faces of a solid are equal in length and form regular plane figures, it is said to be a regular solid. Q95 ââ¬â What is the difference between prism and pyramid? Ans95:- 1) Prism:- A prism is a polygon having two equal and similar end faces, called bases, parallel to each other and joined by other side faces which are rectangles or parallelograms. 2) Pyramid: ââ¬â A pyramid is a polyhedron, having a polygon as its base and a number of triangular faces, equal to the number of sides of the base polygon, meeting at a common point called the apex or vertex. Q96 ââ¬â What are the various positions which a solid can take w. r. t. the reference planes? Ans96 ââ¬â The following are the different positions which a solid can take w. r. t. the reference planes. (i) The solid resting on base on H. P. , with its axis perpendicular to H. P. , and parallel to V. P. (ii) The solid resting on face on H. P. , with its axis perpendicular to V. P. , and parallel to H. P. (iii) The solids resting on face on H. P. , with its axis parallel to H. P. and V. P. (iv) The solid with its axis inclined to one plane and parallel to the other. v) The solid with its axis inclined to both the reference planes i. e. , H. P. and V. P. Q97:- What is an isometric view? Ans97:- If the projection of an object is so drawn that all the three axis of the object are equally inclined to the plane of projection then it is called an isometric view. Q98:- What is an isometric scale? Ans98:- The proportion by which the actual length is converted to isometric length is called as isometric scale. Q99 ââ¬â What are isometric axis? Ans99 ââ¬â The three lines OA, OB and OC meeting at a point and making 120? ngles with each other are termed as isometric axis. Q100:- What are isometric and non isometric lines? Ans100:- The lines which are parallel to isometric axis are called as isometric lines. The lines which are not parallel to isometric axis are called non isometric lines. Q101 ââ¬â What are iso-metric planes? Ans101 ââ¬â The planes representing the faces of an isometric view of the cube as well as the other planes parallel to these planes are called isometric planes. Q102 ââ¬â Give the various positions of isometri c axis. Ans102 ââ¬â The various positions of isometric axis are as follows. Figure. How to cite Engineering Drawing Short Questions, Papers
Thursday, April 30, 2020
Research Proposal Child Sexual Abuse and Represse Essays
Research Proposal: Child Sexual Abuse and Repressed Memories Kerrice Lawrence IDST 400 Dr. Gayle Thrift November 6, 2012 Introduction Child sexual abuse has been happening for eons. Unfortunately the molesting culprits are often close to the child and may include an elder brother and cousin, teachers, fathers or father figures as well as uncles. The children are intimidated allowing the culprit to continue these heinous acts while the child is silent. However a sexually abused child could exhibit some growth and development regression symptoms as their only unspoken defense away of the consequence of verbal communication. Needless to say, a child that suffers sexual abuse is also likely to suffer long term effects. Repressed memories have been known to re-emerge into the conscious mind often triggered by one event or a combination of events. The patient suffers recollection of some or all the traumatic encounters that they underwent as a child. These memories could either be partial leading the victim to probe the matter further or full memories of actual events, people and places. However, the question on the reality and accurateness of these memories is questionable. This research attempts to understand psychological and sociological perspectives on why some memories are repressed and others retained. Further, is to understand to understand how the memories of abuse can affect one's life. This research seeks to understand how these memories be recalled in a controlled environment that allows the victim to be able to deal with the tragic events and the people in their lives that committed such attrocities. Hypothesis That repressed memories are an in-built self-defense mechanism relied on by sexually abused children to protect them from emotional scars they are not able to deal with immediately un til such time as they are ready (Freyd, Schooler, Sivers, 2002) . To understand why some memories are retained while others are repressed and what may cause those repressed memories to be recalled into the concious mind set. Definitions Child abuse is defined as coital relations or any coital related activities with a child by a person with of considerable maturity, where the older party has influence over the child. It includes sexual touching such as penetration of the child, fondling; non-touching such as indecently exposing a child, masturbation while a child is watching, exposing a child to pornographic content; and exploiting children sexually by engaging them in pornography or using them to produce pornographic content (American Humane Association, 2011) . Children are often tricked or forced into such sexual acts. Repressed memories refer to when the mind, after experiencing a psychologically traumatic or devastating event, automatically resolves to lock out this event from being stored in the brain and consequently being remembered at a later stage. According to Sigmund Freud - who coined the term -, this would happen so as to ensure the affected person does not have to deal with the emotional trauma of the occurrence of the event. Repression is automatic and different from suppression which is intended or deliberate (Richmond, 2011) . P sychology refers to scientific attempt to understand human behaviour. It analyses behaviours and behaviour change in human beings. It delves into understanding why certain people behave in a certain way, what experiences may be attributed to certain behaviours et al. It further considers matters that may be going on in the unconsious mind that could be affecting or causing certain behaviour in a particular person. With this understanding, it seeks to heal behavioural problems that may emanate from experiences one has had in the past and whose effects are visible in the present. Sociology seeks to understand the social activities of human beings, their structure, development. It tries to understand their problems while attempting to offer a solution for them that would be amicable. It investigeates and critically anlyses social structure in an attempt to understand human beings, explaining the effects of events in human lives and the course a person is likely to take after suffering certain events (Weber, 1994) . Research Methodology and Design To carry out my research I will carry out literature review of past works from sociologists who have conducted observations on victims who suffered abuse. I will concentrate on
Saturday, March 21, 2020
How to Write Good College Essays
How to Write Good College Essays How to Write Good College Essays Writing a college essay may seem much complicated at a glance. Still, if you know what is required from you and how to deserve your readers appreciation, you have all chances to succeed. This article will help you get to know some special secrets of writing good college essays. Take them into consideration, and you are sure to learn writing really good college essays. In addition, devote a couple of minutes of your time to read an article on good term paper topics, how to write a good college essay, and review a list of good essay topics: How to write good college essays: Secret 1. Avoid banalities When writing a college essay, you should keep in mind that the committee looks through hundreds of absolutely identical essays. Therefore, in order to succeed, you need to make a standing out paper. Think of some exclusive information about you in order to attract the readers attention from the first sight. How to write good college essays: Secret 2. Establish a link between you and your reader Show the reader that it is easy for you to talk to him/her. Imagine that you are having a conversation with an interlocutor who is trying to bring you to light. However, mind that a lot of different people will be reading your paper. So, be careful when talking about the death of your close people or something very private. How to write good college essays: Secret 3. Be honest You know, the reader does not expect to see a superhero in you. So, there is no need for you to exaggerate your abilities. How to write good college essays: Secret 4. Focus on your strengths but do not reject your weaknesses This is in some way means being sincere to the reader. Besides, there are no perfect people, so if you focus on your strengths only, the reader may feel that you hold back something. How to write good college essays: Secret 5. Use humor Use relevant jokes but be careful with them. Different people have different sense of humor. How to write good college essays: Secret 6. Make a catchy introduction and persuasive conclusion Mostly, these two parts make the final impressions from reading. That is why it is so important to spend enough time making them effective. How to write good college essays: Secret 7. Check and check back The more mistakes you will find, the more chances you will have to get a high grade on your paper. How to write good college essays: Secret 8. Believe in yourself! Remember, the one who always thinks about success will certainly succeed! So, good luck with your college essay! If you do not know how to write good college essays and need professional help with writing, do not hesitate to place an order on our site and get your college essay written by professional writers! Related posts: Composition Essay Essay Writing Guide Essay Help Draft Essay Rough Essay Editing Service
Wednesday, March 4, 2020
Aardvark Fast Facts
Aardvark Fast Facts Aardvarks (Orycteropus afer) are known by several common names including antbears and anteaters; they are native to sub-Saharan Africa. The name aardvark is Afrikaansà (a daughter language of Dutch) for earth pig. Despite these common names, aardvarks are not closely related to bears, pigs, or anteaters. Instead, they occupy their own distinct order: Tubulidentata. Fast Facts: Aardvark Scientific Name: Orycteropus aferCommon Names: Aardvark, antbear, anteater, Cape anteaters, earth pigBasic Animal Group: MammalSize: Up to 6.5 feet long, 2 feet at shoulder heightWeight: 110ââ¬â175 poundsLifespan: 10 yearsDiet:à CarnivoreHabitat: Sub-saharan AfricaPopulation: Not quantifiedConservation Status: Least Concern Description Aardvarks are medium-sized mammals (weighing 110ââ¬â175 pounds and up to 6.5 feet long) with a bulky body, arched back, medium-length legs, long ears (resembling those of a donkey), a long snout, and a thick tail. They have a sparse coat of coarse grayish brown fur covering their body. Aardvarks have four toes on their front feet and five toes on their rear feet. Each toe has a flat, sturdy nail that they use for digging burrows and tearing into insect nests in search of food. Aardvarks have very thick skin which provides them protection from insect bites and even the bites of predators. Their teeth lack enamel and, as a result, wear down and must regrow continuously- the teeth are tubular and hexagonal in cross-section. Aardvarks have small eyes and their retina only contains rods (this means they are color-blind). Like many nocturnal animals, aardvarks have a keen sense of smell and very good hearing. Their front claws are especially robust, enabling them to dig burrows and break open termite nests with ease. Their long, serpentine tongue (10ââ¬â12 inches) is sticky and can gather up ants and termites with great efficiency. The classification of the aardvark was controversial at one time. Aardvarks were formerly classified in the same group asà armadillos, sloths, and anteaters. Today, genetic studies have shown that the aardvark is classified in the order called the Tubulidentata (tube-toothed), and the family Orycteropodidae: They are the only animal in either order or family. Shongololo90/Getty Imagesà Habitat and Range Aardvarks inhabit a variety of habitats including savannas, shrublands, grasslands, and woodlands. Although they once lived in Europe and Asia, today their range extends throughout most of sub-Saharan Africa, every ecosystem except marshes, deserts, and very rock terrains. Bridgena_Barnard/Getty Imagesà Diet and Behavior Aardvarks forage at night, covering extensive distances (as much as 6 miles per night) in search of food. To find food, they swing their noses from side to side over the ground, trying to detect their prey by scent. They feed almost exclusively on termites and ants and can consume up to 50,000 insects in a single night. They occasionally supplement their diet by feeding on other insects, plant material or the occasional small mammal. Solitary, nocturnal mammals, aardvarks spend the daylight hours safely tucked away inside their borrows and emerge to feed during the late afternoon or early evening. Aardvarks are extraordinarily fast diggers and can excavate a hole 2 feet deep in less than 30 seconds. The main predators of aardvarks include lions, leopards, and pythons. Aardvarks dig three types of burrows in their ranges: relatively shallow foraging burrows, larger temporary shelters to hide from predators and more complex burrows for permanent residence. They share their permanent residences with other creatures but not other aardvarks. Investigation of the residential burrows has shown that compared to the surrounding soil, soil inside the burrow is cooler (between 4 and 18 degrees F cooler depending on the time of day), and moister. The differences remained the same no matter how old the burrow was, leading researchers to name the aardvark an ecological engineer. Reproduction and Offspring Aardvarks reproduce sexually and form pairs only for a short time during the breeding season. Females give birth to one or rarely two cubs after a gestation period of 7ââ¬â8 months. In northern Africa, Aardvarks give birth from October to November; in the south, from May and July. The young are born with their eyes open. The mother nurses the young until they are 3 months old when they start eating insects. They become independent of their mothers at six months and venture off to find their own territory. Aardvarks become sexually mature at two to three years of age and have lifespans in the wild of about 18 years. Evolutionary History Aardvarks are considered to be living fossils due to their ancient, highly conserved genetic make-up. Scientists believe that todays aardvarks represent one of the most ancient lineages among the placental mammals (Eutheria). Aardvarks are considered to be a primitive form of hoofed mammal, not because of any obvious similarities but instead due to subtle characteristics of their brain, teeth, and musculature. The closest living relatives to the aardvarks includeà elephants, hyraxes,à dugongs, manatees, elephant shrews, golden moles, and tenrecs. Together, these mammals form a group known as the Afrotheria. Conservation Status Aardvarks once existed in Europe and Asia but are now only found in sub-Saharan Africa. Their populations are unknown but they are classified as Least Concern by the International Union for Conservation of Nature (IUCN) and not listed as threatened at all by the ECOS Environmental Conservation Online System. Major identified threats to the aardvark are habitat loss through agriculture, and human and trapping for bush meat. The skin, claws, and teeth are used to make bracelets, charms and curious and some medicinal purposes.à à Sources Buss, Peter E., and Leith C. R. Meyer. Chapter 52: Tubulidentata (Aardvark). Fowlers Zoo and Wild Animal Medicine, Volume 8. Eds. Miller, R. Eric and Murray E. Fowler. St. Louis: W.B. Saunders, 2015. 514ââ¬â16. Print.Gozdziewska-Harlajczuk, Karolina, Joanna Kleckowska-Nawrot, and Karolina Barszcz. Macroscopic and Microscopic Study of the Tongue of the Aardvark (Orycteropus Afer, Orycteropodidae). Tissue and Cell 54 (2018): 127ââ¬â38. Print.Haussmann, Natalie S., et al. Ecosystem Engineering through Aardvark (Orycteropus Afer) Burrowing: Mechanisms and Effects. Ecological Engineering 118 (2018): 66ââ¬â72. Print.Ratzloff, Elizabeth. Orycteropus afer (aardvark). Animal Diversity Web, 2011.à Taylor, W. A., P. A. Lindsey, and J. D. Skinner. The Feeding Ecology of the Aardvark Orycteropus Afer. Journal of Arid Environments 50.1 (2002): 135ââ¬â52. Print.Taylor, A. and T. Lehmann. Orycteropus afer. The IUCN Red List of Threatened Species: e.T41504A21286437, 2015.
Monday, February 17, 2020
Evaluation of a planned actiity Essay Example | Topics and Well Written Essays - 1000 words
Evaluation of a planned actiity - Essay Example But the ideas of some people concerning children growing up in bilingual environments have not in any way benefited these children, and may have an adverse effect on them. Therefore, when a parent changes jobs and it involves moving to a different part of the world, there is linguistic demand on them and their children (Romaine, 1995). During the first week, I observed the children in the role play area and offered guidance and assistance when needed. In the second week I joined the children in the role play area, initiating and supporting. Finally I introduced an old word processor in order to improve and extend the childrenââ¬â¢s writing skills. Children could use this to type things such as prescriptions, appointment sheets and health advice and print them off. By adding props which support early writing, it allows the children to make early attempts at writing through play. By adding this word processor to the role play area it will ââ¬Å"help set the sceneâ⬠for the topic area. This allows the children to get involved and makes the role play area more ââ¬Å"meaningfulâ⬠to the activity (Cooke, 1997, p. 122). On the first day, the teacher read a book called ââ¬Å"A Day in the Life of a Doctorâ⬠to the whole class. The teaching assistant translated it to Urdu, a member of the EAL (English as Additional Language) department translated it to Tamil, and this in turn started a discussion about being ill and going to the doctor. A child in my group who is normally shy and timid started to participate in the conversation. When this child is home, her first language is Tamil and her English is very limited, however, listening to the lady translate it she started responding by telling how her sister had a cough and that her mum had to take her to the doctor. She was also listening to her peers explaining in English and she tried to start a simple sentence in English by saying ââ¬Å"my mumâ⬠, then she stopped as she got embarrassed. This
Monday, February 3, 2020
Letter to the crown and the judge of the court Assignment
Letter to the crown and the judge of the court - Assignment Example Hence, I promise never to get involved in such scenario again. I believe that the main objective of your department is to offer correction although there are some aspects of punishments attached to it. However, I believe that you consider the corrective mandate of the department more than its disciplinary requirement. I also believe that you value offering support to people who value living a descent life or making efforts to correct their mistakes. Currently I rely on your support to enable me walk through the road of change. Getting back my passport from your department would be a paramount support that would enable me to achieve the change that I desire. I acknowledge the existence of fears that I might flee out of the country due to the trouble that I got involved. However, I would like to bring to your consideration that I have no any plans to flee the country. In addition, I am committed to go through the entire judicial process for the interest of my Canadian citizenship and the plaintiff. Canada is not only my county of residence but also my home. Although I was not born in Canada, I have lived in the country since I was eight year old. I have also received all my education in Canadian schools and therefore all my investments are in the country. Fleeing from Canada would be like going to another planet since all my friends and family live in Canada. In addition my father who has special value and love for the country has invested over $200, 000 for our family to acquire full Canadian citizenship. Currently I am in the last stage of acquiring a permanent residence card and therefore your assistance would be vital. I hope that my request and regrets would find a place of consideration in your honoured court. I also appreciate and honour the assistance that you will accord me through the release of my passport. Your assistance would go a long way in consoling my aged father, worried friends, family members and
Sunday, January 26, 2020
Sepsis An Overview Health And Social Care Essay
Sepsis An Overview Health And Social Care Essay Sepsis is an infection of the bloodstream. The infection tends to spread quickly and often is difficult to recognize. One of our roles as a nurse is that of patient advocate, and as such we are closest to the patient, placing us in a key position to identify any subtle changes at their earliest onset and prevent the spread of severe infection. Knowledge of the signs and symptoms of SIRS, sepsis, and septic shock is key to early recognition. Early recognition allows for appropriate treatment to begin sooner, decreasing the likelihood of septic shock and life-threatening organ failure. Once sepsis is diagnosed, early and aggressive treatment can begin, which greatly reduces mortality rates associated with sepsis. sepà ¢Ã¢â ¬Ã ¢sis (Ãâ¹Ãâ sep-sÃâ°Ã¢â ¢s) n. Sometimes called blood poisoning, sepsis is the bodys often deadly response to infection or injury (Merriam-Webster, 2011) Sepsis is a potentially life-threatening condition caused by the immune systems reaction to an infection; it is the leading cause of death in intensive care units (Mayo Clinic Staff, Mayo Clinic 2010). It is defined by the presence of 2 or more SIRS (systemic inflammatory response syndrome) criteria in the setting of a documented or presumed infection (Rivers, McIntyre, Morro, Rivers, 2005 pg 1054). Chemicals that are released into the blood to fight infection trigger widespread inflammation which explains why injury can occur to body tissues far from the original infection. The body may develop the inflammatory response to microbes in the blood, urine, lungs, skin and other tissues. Manifestations of the systemic inflammatory response syndrome (SIRS) include abnormalities in temperature, heart, respiratory rates and leukocyte counts. This is a severe sepsis that arises from a noninfectious cause. The condition may manifest into severe sepsis or septic shock. Severe sepsis is characterized by organ dysfunction, while septic shock results when blood pressure decreases and the patient becomes extremely hypotensive, even with the administration of fluid resuscitation (Lewis, Heitkemper, Dirksen, OBrien and Bucher (2007), pg 1778). The initial presentation of severe sepsis and septic shock is usually nonspecific. à Patients admitted with relatively benign infection can progress in a few hours to a more devastating form of the disease. The transition usually occurs during the first 24 hours of hospitalization (Lewis, et al 2007, pg 1779). Severe sepsis is associated with acute organ dysfunction as inflammation may result in organ damage (Mayo Clinic Staff, Mayo Clinic 2010). As severe sepsis progresses, it begins to affect organ function and eventually can lead to septic shock; a sometimes fatal drop in blood pressure. People who are most at risk of developing sepsis include the very young and the very old, individuals with compromised immune systems, very sick people in the hospital and those who have invasive devices, such as urinary catheters or breathing tubes (Mayo Clinic Staff, Mayo Clinic, 2010). Black people are more likely than are white people to get sepsis and black men face the highest risk (Mayo Clinic Staff, Mayo Clinic 2010). Severe sepsis is diagnosed if at least one of the following signs and symptoms, which indicate organ dysfunction, are noted; areas of mottled skin, significantly decreased urine output, abrupt change in mental status, decrease in platelet count, difficulty breathing and abnormal heart function (Lewis et al, 2007 pg 1779). To be diagnosed with septic shock, a patient must have the signs and symptoms of severe sepsis plus extremely low blood pressure (Mayo Clinic Staff, Mayo Clinic 2010). Sepsis is usually treated in the ICU with antibiotic therapy and intravenous fluids. These patients require preventative measures for deep vein thrombosis, stress ulcer and pressure ulcers. Hunter (2006) explains that the reason why sepsis is rarely given attention and popularized for public information and attention is because it is not a disease in itself, but a reaction of the body to a lowered immunological response. Sepsis is the leading cause of death in non-coronary intensive care units (ICUs) and the 10th leading cause of death in the United States overall (Slade, Tamber and Vincent, 2010, pg 2). à The incidence of severe sepsis in the United States is between 650,000 and 750,000 cases. Over 10 million cases of sepsis have been reported in the United States based on a 22-year period study of discharge data from 750 million hospitalizations Annually, approximately 750,000 people develop sepsis and more than 200,000 cases are fatal (Slade, et al 2010, pg 1). More than 70% of these patients have underlying co-morbidities and more than 60% of these cases occur in those aged 65 years and older (Slade, et al 2010, pg 1). When patients with human immunodeficiency virus are excluded, the incidence of sepsis in men and women is similar. A greater number of sepsis cases are caused by infection with gram-positive organisms than gram-negative organisms, and fungal infections now account for 6% of cases (Slade, et al 2010, pg 1). After adjusting for population size, the annualized incidence of sepsis is increasing by 8%. The incidence of severe sepsis is increasing greatest in older adults and the nonwhite population. The rise in the number of cases is believed to be caused by the increased use of invasive procedures and immunosuppressive drugs, chemotherapy, transplantation, and prosthetic implants and devices, as well as the increasing problem of antimicrobial resistance (Slade, et al 2010, pg 1). Despite advances in critical care management, sepsis has a mortality rate of 30 to 50 percent and is among the primary causes of death in intensive care units ((Brunn and Platt, 2006, 12: 10-6). It is believed that the increasing incidence of severe sepsis is due to the growing population among the elderly as a result of increasing longevity among people with chronic diseases and the high prevalence of sepsis developing among patients with acquired immune deficiency syndrome (Slade, et al 2010, pg 1). During an infection, the bodys defense system is activated to fight the attacking pathogens. These invading pathogens, especially bacteria, possess receptive lipopolysaccharide (LPS) coverings or release exotoxins and endotoxins that activate the T-cells and macrophages and trigger the Toll-like receptors (TLRs) to respond by releasing antibodies, eicosanoids and cytokines such as tumor necrosis factor (TNF) and interleukins. The antigens may also result in the production of lysozymes and proteases, cationic proteins and lactoferrin that can recognize and kill invading pathogens. Different microbes also induce various profiles of TNF and interleukin to be released. These molecules results in a heightened inflammatory response of the body and vascular dilation. The TLRs also affect a different cascade that involves coagulation pathways, which results in preventing the bleeding to occur at the area of infection. With too much molecular responses and signals, the recognition of the molecules sometimes fails and attacks even the bodys endothelial cells. These compounded immune and inflammatory actions result in the development of the symptoms of sepsis (Hunter, 2006 pg 668; Van Amersfoort, 2001 pg 400). Brunn and Platt (2006) believes that events leading to breakdown of the tissue such as injuries or infection, that naturally results in the activation of the immune system, is a major event that causes sepsis. During host infection, the release of tumor necrosis factor and interlekin-1 signals the dilation of the arteries and inflammation. These released cytokines also activate the coagulation pathway to prevent fibrinolysis but an increase in the concentration of these molecules may result in abnormalities in the hosts defense system (Gropper, 2004 pg 568). The common belief that sepsis is caused by endotoxins released by pathogens has fully been established but genomic advancements is shedding light on current insights that sepsis can also occur without endotoxin triggers, that is even without microbial infections (Gropper, 2004 pg 568). Diagnosing sepsis can be difficult because its signs and symptoms can be caused by other disorders. Doctors often order a battery of tests to try to pinpoint the underlying infection. Blood tests and additional laboratory tests on fluids such as urine and cerebrospinal fluid to check for bacteria and infections and wound secretions, if an open wound appears infected. In addition, imaging tests to visualize problems such as x-ray, computerized tomography (ct), ultrasound and magnetic resonance imaging (mri) to locate the source of an infection are also ordered. Early, aggressive recognition boosts a patients chances of surviving sepsis. Sepsis should be treated as a medical emergency. In other words, sepsis should be treated as quickly and efficiently as possible as soon as it has been identified. This means rapid administration of antibiotics and fluids. A 2006 study showed that the risk of death from sepsis increases by 7.6% with every hour that passes before treatment begins. (Mayo Clinic Staff, Mayo Clinic 2010). Early, aggressive treatment boosts the chances of surviving sepsis. People with severe sepsis require close monitoring and treatment in a hospital intensive care unit. Lifesaving measures may be needed to stabilize breathing and heart function. (Mayo Clinic Staff, Mayo Clinic 2010). People with sepsis usually need to be in an intensive care unit (ICU). As soon as sepsis is suspected, broad spectrum intravenous antibiotic therapy is begun. The number of antibiotics may be decreased when blood tests reveal which particular bacteria are causing the infection. The source of the infection should be discovered, if possible. This could mean more testing. Infected intravenous lines or surgical drains should be removed, and any abscesses should be surgically drained. Oxygen, intravenous fluids, and medications that increase blood pressure may be needed. Dialysis may be necessary if there is kidney failure, and a breathing machine (mechanical ventilation) if there is respiratory failure (Mayo Clinic Staff, Mayo Clinic, 2010). While severe sepsis requires treatment in a critical care area, its recognition is often made outside of the Intensive Care Unit (ICU). With nurses being at the side of a patient from admission to discharge, this places them in an ideal position to be first to recognize sepsis. Thorough assessments are crucial and being able to recognize even the most minimal changes in a patient could be the difference between life and death. Once severe sepsis is confirmed, key aspects of nursing care are related to providing comprehensive treatment. Pain relief and sedation are important in promoting patients comfort. Meeting the needs of patients families is also an essential component of care. Research on the needs of patients families during critical illness supports provision of information as an important aspect of family care (Gropper et al, 2004 pg. 569). Teaching patients and their families is also essential to ensure that they understand various treatments and interventions provided in severe sepsis. Ultimately, prevention of sepsis may be the single most important measure for control (Mayo Clinic Staff, Mayo Clinic, 2010). Hand washing remains the most effective way to reduce the incidence of infection, especially the transmission of nosocomial infections in hospitalized patients (Mayo Clinic Staff, Mayo Clinic, 2010. Good hand hygiene can be achieved by using either a waterless, alcohol-based product or antibacterial soap and water with adequate rinsing. Using universal precautions, adhering to infection control practices, and instituting measures to prevent nosocomial infections can also help prevent sepsis (Lewis, et al 2007, pg 248). Nursing measures such as oral care, proper positioning, turning, and care of invasive catheters are important in decreasing the risk for infection in critically ill patients (Fourrier, Cau-Pottier, Boutigny, Roussel-Delvallez, Jourdain, Chopin, 2005 pg 1730). Newly released guidelines on the prevention of catheter-related infections stress the use of surveillance, cutaneous antisepsis during care of catheter sites, and catheter-site dressing regimens to minimize the risk of infection (Fourrier, 2005 pg. 1731). Other aspects of nursing care such as sending specimens for culture because of suspicious drainage or elevations in temperature, monitoring the characteristics of wounds and drainage material, and using astute clinical assessment to recognize patients at risk for sepsis can contribute to the early detection and treatment of infection to minimize the risk for sepsis. Critical care nurses are the healthcare providers most closely involved in the daily care of critically ill patients and so have the opportunity to identify patients at risk for and to look for signs and symptoms of severe sepsis (Kleinpell, Goyette, 2003 pg 120). In addition, critical care nurses are also the ones who continually monitor patients with severe sepsis to assess the effects of treatment and to detect adverse reactions to various therapeutic interventions. Use of an intensivist-led multidisciplinary team is designated as the best-practice model for the intensive care unit, and the value of team-led care has been shown (Kleinpell, et al 2003, pg 121). As key members of intensivist-led multidisciplinary teams, critical care nurses play an important role in the detection, monitoring, and treatment of sepsis and can affect outcomes in patients with severe sepsis (Kleinpell, et al 2003, pg 121). 5 Priority Nursing Diagnosis Diagnosis #1: Deficient fluid volume related to vasodilatation of peripheral vessels leaking of capillaries. Intervention #1: Watch for early signs of hypovolemia, including restlessness, weakness, muscle cramps, headaches, inability to concentrate and postural hypotension. . Rationale #1: Late signs include oliguria, abdominal or chest pain, cyanosis, cold clammy skin, and confusion (Kasper et al, 2005). : Intervention #2: Monitor for the existence of factors causing deficient fluid volume (e.g., vomiting, diarrhea, difficulty maintaining oral intake, fever, uncontrolled type 2 diabetes, diuretic therapy). Rationale #2: Early identification of risk factors and early intervention can decrease the occurrence and severity of complications from deficient fluid volume. The gastrointestinal system is a common site of abnormal fluid loss (Metheny, 2000). Intervention #3: Monitor daily weight for sudden decreases, especially in the presence of decreasing urine output or active fluid loss. Weigh the client on the same scale with the same type of clothing at same time of day, preferably before breakfast. Rationale #3: Body weight changes reflect changes in body fluid volume (Kasper et al, 2005). Weight loss of 2.2 pounds is equal to fluid loss of 1 liter (Linton Maebius, 2003). Diagnosis #2: Imbalanced nutrition less than body requirements related to anorexia generalized weakness. Intervention #1: Monitor for signs of malnutrition, including brittle hair that is easily plucked, bruise, dry skin, pale skin and conjunctiva, muscle wasting, smooth red tongue, cheilosis, flaky paint rash over lower extremities and disorientation (Kasper, 2005). Rationale #1: Untreated malnutrition can result in death (Kasper, 2005). Intervention #2: Recognize that severe protein calorie malnutrition can result in septicemia from impairment of the immune system or organ failure including heart failure, liver failure, respiratory dysfunction, especially in the critically ill client. Rationale #2: Untreated malnutrition can result in death (Kasper, 2005) Intervention #3: Note laboratory test results as available: serum albumin, prealbumin, serum total protein, serum ferritin, transferring, hemoglobin, hematocrit, and electrolytes. Rationale #3: A serum albumin level of less than 3.5 g/100 milliliters is considered and indicator of risk of poor nutritional status (DiMaria-Ghalli Amella, 2005). Prealbumin level was reliable in evaluating the existence of malnutrition (Devoto et al, 2006). Diagnosis #3: Ineffective tissue perfusion related to decreased systemic vascular resistance. Intervention #1: If the client has a period of syncope or other signs of a possible transient ischemic attack, assist the client to a resting position, perform a neurological assessment and report to the physician. Rationale #1: Syncope may be caused by dysrhythmias, hypotension caused by decreased tone or volume, cerebrovascular disease, or anxiety. Unexplained recurrent syncope, especially if associated with structural heart disease, is associated with a high risk of death (Kasper et al, 2005). Intervention#2: If the client experiences dizziness because of postural hypotension when getting up, teach methods to decrease dizziness, such as remaining seated for several minutes before standing, flexing feet upward several time while seated, rising slowly, sitting down immediately if feeling dizzy and trying to have someone present when standing. Rationale #2: Postural hypotension can be detected in up to 30% of elderly clients. These methods can help prevent falls (Tinetti, 2003). Intervention #3: If symptoms of a new cerebrovascular accident occur (e.g., slurred speech, change in vision, hemiparesis, hemiplegia, or dysphasia), notify a physician immediately. Rationale #3: New onset of these neurological symptoms can signify a stroke. If the stroke is caused by a thrombus and the client receives thrombolytic treatment within 3 hours, effects can often be reversed and function improved, although there is an increased risk of intracranial hemorrhage (Wardlaw, et al, 2003) Diagnosis #4: Ineffective thermoregulation related to infectious process, septic shock. Intervention #1: Monitor temperature every 1 to 4 hours or use continuous temperature monitoring as appropriate. Rationale #1: Normal adult temperature is usually identified as 98.6 degrees F (37 degrees C) but in actuality the normal temperature fluctuates throughout the day. In the early morning it may be as low as 96.4 degrees F (35.8 degrees C) and in the late afternoon or evening as high as 99.1 degrees F (37.3 degrees C). (Bickely Szilagyj, 2007). Disease injury and pharmacological agents may impair regulation of body temperature (Kasper et al, 2005). Intervention #2: Measure the temperature orally or rectally. Avoid using the axillary or tympanic site. Rationale #2: Oral temperature measurement provides a more accurate temperature than tympanic measurement (Fisk Arcona, 2001; Giuliano et al, 2000). Axillary temperatures are often inaccurate. The oral temperature is usually accurate even in an intubated clients (Fallis, 2000). The SolaTherm and DataTherm devices correlated strongly with core body temperatures obtained from a pulmonary artery catheter (Smith, 2004). A study performed in Turkey found that axillary and tympanic temperatures were less accurate than oral temperatures (Devrim, 2007). Intervention #3: Take vital signs every 1 to 4 hours, noting changes associated with hypothermia; first, increased blood pressure, pulse and respirations; then decreased values as hypothermia progresses. Rationale #3: Mild hypothermia activates the sympathetic nervous system, which can increase the levels of vital signs; as hypothermia progresses, the heart becomes suppress, with decreased cardiac output and lowering of vital sign readings (Ruffolo, 2002; Kaper et al, 2005). Diagnosis #5: Risk for impaired skin integrity related to desquamation caused by disseminated intravascular coagulation. Intervention #1: Monitor skin condition at least once a day for color or texture changes, dermatological conditions, or lesions. Determine whether the client is experiencing loss of sensation or pain. Rationale #1: Systemic inspection can identify impending problems early (Ayello Braden, 2002; Krasner, Rodeheaver Sibbald, 2001). Intervention #2: Identify clients at risk for impaired skin integrity as a result of immobility, chronological age, malnutrition, incontinence, compromised perfusion, immunocompromised status or chronic medical conditions such as diabetes mellitus, spinal cord injury or renal failure. Rationale #2: These client populations are known to be at high risk for impaired skin integrity (Maklebust Sieggreen, 2001: Stotts Wipke-Tevis, 2001). Targeting variables (such as age and Braden Scale Risk Category) can focus assessment on particular risk factors (e.g., pressure) and help guide the plan of prevention and care (Young et al, 2002). Intervention #3: Monitor the clients skin care practices, noting type of soap or other cleansing agents used, temperature of water and frequency of skin cleansing. Rationale #3: Individualize plan according to the clients skin condition, needs, and preference (Baranoski, 2000). As a nursing student with a strong interest in working with trauma patients, I am intrigued by the fact that as to why some trauma patients are more susceptible to contracting sepsis than others. Therefore my suggestion for future research would be to determine if there is an underlying factor that we, as healthcare professionals are overlooking. Apparently, I am not alone in my thinking and in performing additional reading on sepsis I was pleasantly surprised to learn that an investigation into this matter is underway. Hinley (2010), a staff writer for Medical News Today, reports how an emergency room nurses curiosity about why some trauma patients develop sepsis while others dont has led to an expanded career as a researcher studying the same, burning question. Dr. Beth NeSmith, assistant professor of physiological and technological nursing in the Medical College of Georgia School of Nursing received a three-year, $281,000 National Institutes of Health grant in September, 2010 to examine risk factors for sepsis and organ failure following trauma. Based on her own research, Dr. NeSmith concluded that trauma kills more than 13 million Americans annually and sepsis is the leading cause of in-hospital trauma deaths, yet little data existed to explain differences in population vulnerability to these deadly outcomes. NeSmith believes lifetime chronic stress may be the culprit and a simple test on hair may identify those at risk. Her theory is that a person who grows up with chronic stress, such as socio- economic stress or abuse, will have a different response to trauma in terms of their inflammation profile, NeSmith said. Inflammation is a normal body response to trauma, but if it gets out of hand its dangerous. The only care for it is supportive until if the body gets better. (Hinley, P., Medical News Today, 2010) As the trauma clinical nurse specialist at MCG Health System from 1997-2003, NeSmith was intrigued by the limited treatment options available for sepsis. Her grant will allow her to test the theory that people with existing chronic stress respond differently physiologically to trauma than non-stressed individuals. NeSmith spends three days a week in the lab working with basic science research techniques. Nurses play a critical role in improving outcomes for patients with sepsis. To save the lives of those with sepsis, all nurses, no matter where they work, must develop their skills for recognizing sepsis early and initiating appropriate therapy. With nurses dedicated to understanding and stopping this deadly disorder, the goal of reducing mortality will be realized.à Ã
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