Arterial blood pressure is typically reported as two numbers (e.g. 120/80 mmHg);

Question

Arterial blood pressure is typically reported as two numbers (e.g. 120/80 mmHg); what does each of these represent? (Explain the physiology, don't just define the terms). 1. 2. Why is it important to measure at the brachial artery and not at the vein? Why is it important for the subject's arm to be relaxed? What would happen to their blood pressure if they actively hold their arm out? 3. Why is it important to measure at the level of the heart? What happens if you hold the subject's arm passively above their head during the measurement? 4. What is your heart rate? What is your blood pressure? What is your mean arterial pressure? What is your rate-pressure product? 5.

Explanation / Answer

Upper number represent systolic blood pressure. It is the amount of pressure in the arteries during contraction of heart muscles

Lower number represents blood pressure of arteries as the heart relaxes between beats

Physiology:

It is the pressure exerted on the walls of the blood vessels when heart pumps blood . Stretching of the muscles in response to this force and their subsequent contraction are important in maintaining blood flow through the vascular system.

2)it is important to measure the brachial artery because

3)it is important for the subjects arm to be relaxed to get accurate values of BP. Change in position of the arm will cause increase or decrease of values . That is it results in errors .

If they actively hold their arm out, the pressure shown will increase due to the effect of gravity.

4)it is important to measure the Bp at the level of the heart to get accurate value of BP.keeping the hand below heart level leads to overestimation of systolic and diastolic pressure and raising above heart level leads to underestimation

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