The Red Blood cells - Lab Report Example

Download file to see previous pages of RBCs in one smallest square = 1036/5 = 207.2 No. of RBCs in 1mm3 undiluted = 207.2 x 10000 = 2072000 / mm3 The Red Blood cell count according to the improved hemocytometer is 2.07 x 106 mm3. According to this reading the person seems to be anemic which may be due to iron deficiency, folate deficiency, genetic disorders or immune dysfunction. The difference between two readings could be due to many reasons. The high value in the second test can be attributed to inadequate wiping of pipette, improper mixing or uneven distribution in counting chamber. The low value can be due to dilution of contents in pipette by saliva and use of non standard counting chamber and improper cover slip adjustment. Error calculation can result in both high and low values. Even if the second value is correct the women is still anemic. To confirm the findings of both tests a packed cell volume (PCV) or hematocrit test may be done which will give the correct percentage of erythrocyte volume in the blood. Section B B1 i) According to the JNC 7 Report the BP reading of subject N which is reported to be 125/78 is classified as prehypertension stage since it is greater than the prescribed systole limit of ? 120. Subject K on the other hand will be classified as a patient of hypertension stage – I which has a systolic range of 140-159 and a diastolic range of 90-99. The reading of subject K reported to be 150/90 comes under this category. ii) Mean arterial pressure (MAP) can be estimated through the following formula MAP ? DP + 1/3 (SP – DP) Accordingly subject N has a MAP of 93.67 mmHg while subject K has a MAP of 110 mmHg iii) Auscultation : A phenomenon describing the use of stethoscope in order to listen the internal sounds of the body clearly. It requires considerable clinical experience and is an integral skill which is a part of the examination of three organ systems of the body namely cardiovascular (heart sounds), respiratory (breath sounds) and gastrointestinal (bowel sounds) Korotkoff sounds : A sound heard during the measurement of blood pressure by a sphygmomanometer. The pressure differences created in the cuff results in turbulence of blood flow which leads to the audible sound known as first korotkoff sound. Korotkoff sounds can be classified into five types. First heard when the pressure in the cuff is equal to the systolic pressure, second and third can be described as murmurs and tapping sounds respectively. Fourth sound is heard at 10mm above diastolic pressure while the last korotkoff sound is heard at the precise diastolic pressure. Oscillometric principle : Another method of measuring blood pressure. It makes use of the same instrument but in addition uses a transducer which gives the oscillation readings of the blood flow. As the pressure in the cuff varies with simultaneous expansion and contraction of brachial artery an oscillation is produced. Hypertension : A medical phenomenon indicating an increased systemic blood pressure. Normal blood pressure is described as ? 120 systolic and ? 80 diastolic. Generally it is classified as primary and secondary hypertension with primary meaning with no apparent cause. Hypertension is a risk factor for many diseases and its control is necessary for a healthy long life. iv) S1 and S2 heart sounds are produced due to the closure of valves in the heart namely the atrioventricular valves and the semilunar valves. On the other hand korotkoff sounds are produced when the pressure in the cuff varies and creates turbulence for the blood flowing through the brachial artery. v) Though appearing to be quite similar heart rate denotes the number of times a heart contracts or a number of apical contractions of the heart which is measured directly with an auscultation on the chest. However the ...Download file to see next pagesRead More