What is the mean arterial pressure (MAP) and how is it calculated? What are the

Question

What is the mean arterial pressure (MAP) and how is it calculated? What are the mean arterial and pulse pressures of an individual with a blood pressure of 115/82? Hypothetically, what would happen to this person’s MAP if they had elevated systemic levels of histamine? What is the mean arterial pressure (MAP) and how is it calculated? What are the mean arterial and pulse pressures of an individual with a blood pressure of 115/82? Hypothetically, what would happen to this person’s MAP if they had elevated systemic levels of histamine?

Explanation / Answer

MAP, or mean arterial pressure, is defined as the average pressure in a patient's arteries during one cardiac cycle. It is considered a better indicator of perfusion to vital organs than systolic bloodpressure (SBP)

The way to calculate the patients MAP is to use the following formula: MAP = [ (2 x diastolic) + systolic ] divided by 3. The reason that the diastolic value is multiplied by 2, is that the diastolic portion of the cardiac cycle is twice as long as the systoli.

MAP = 93.

PULSE PRESSURE = 33 mmHg

Histamine causes vasodilation and increase in the capillary permeability which often leads to the lowering the blood pressure.

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