Question

A healthy young boy has a systolic blood pressure of 130 mmHg and a Pulse pressure of 65 mmHg. This boy goes to the gym and starts to run on the treadmill. After the run, he has a diastolic blood pressure of 85 and a systolic blood pressure of 160. Please calculate the change of mean arterial pressure.

Answer 1

Answer:

Mean Arterial Pressure (MAP) is defined as the mean or average blood pressure in the individuals during one systole and one diastole of heart or during one cardiac cycle.

Before the treadmill exercise

Systolic Blood pressure (SBP) = 130 mmHg

Pulse pressure =65 mmHg

To find the Diastolic Blood Pressure (DBP) before the exercise is calculated by

Pulse pressure = SBP - DBP

DBP = SBP - pulse pressure

DBP = 130 - 65

DBP =65 mmHg

Diastolic Blood Pressure of the boy before exercise is 65 mmHg

Mean arterial pressure before exercise:

The mean arterial pressure is calculated by the formula:

Mean arterial pressure is calculated by adding the Systolic Blood Pressure with double the time of Diastolic Blood Pressure and it is divided by 3.

Systolic Blood Pressure before exercise is 130 mmHg and Diastolic Blood Pressure is 65mmHg.

Mean arterial pressure = SBP + 2(DBP)/ 3

= 130 + 2(65) / 3

=130 + 130 /3

= 260 /3

= 86.66 (approximately)

Mean arterial pressure = 87 mmHg

Mean arterial pressure of the boy before exercise is 87mmHg.

Mean arterial pressure after exercise:

Systolic Blood Pressure of the boy after exercise is 160 mmHg and Diastolic Blood Pressure after exercise is 85 mmHg.

Mean arterial pressure = SBP + 2(DBP) / 3

= 160 + 2(85) /3

= 160 + 170 /3

= 330 / 3

= 110 mmHg

The Mean Arterial Pressure of the boy after exercise is 110 mmHg. Comparing the Mean Arterial Pressure of before and after the exercise the pressure get change from 87mmHg to 110mmHg. 23 mmHg of pressure get increased after exercise.