Question

Calculate changes in MAP (mean arterial pressure) and ponder over their physiological consequences (hyper/hypotension, etc)..

Answer 1

Ans:-

Mean arterial pressure is a function of cardiac output and the amount of resistance provided by the blood vessels.

Mean arterial pressure = cardiac output X periferal resistance.

Mean arterial pressure= diastolic bp + 1/3

( systolic no - diastolic bp).

Mean arterial pressure is regulated by changes in cardiac output and systemic vascular resistance. ... Cardiac output is determined by the product of stroke volume and heart rate. Stroke volume is determined by inotropy and ventricular preload.

physiological consequences /IMPORTANCE of MAP:-

Mean arterial pressure (MAP) is a critical hemodynamic factor. The absence of proper regulation of MAP can have important pathophysiological consequences.

Low MAP can cause inadequate blood flow to organs, syncope, and shock. O

the other hand, elevated MAP contributes to increased oxygen demand by the heart, ventricular remodeling, vascular injury, end organ damage, and stroke.

It is considered by many to be a better indication of perfusion than systolic blood pressure.

So MAP IS A IMP DIAGNOSTIC TOOL IN DECIDING HYPERTENSION AND HYPOTENSION. AND MANY OTHER PHYSIOLOGICAL ACTIVITY OF HEART AND PERIFERAL VASCULATURE.