Which statement is true about LV and Aorta pressures?

Which statement is true about LV and Aorta pressures?

• A. LV and Aorta have the same normal pressure range (90-140 mmHg).
• B. LV and RA share the same normal pressure range.
• C. Aorta has a normal range of 20-30 mmHg.
• D. PA has a normal range of 90-140 mmHg.

Answer: (A)

During systole, the left ventricle and the proximal aorta reach effectively the same peak pressure because the LV must generate enough force to push blood into the aorta and open the aortic valve. In a healthy person, this systolic pressure is about 90-140 mmHg in both the LV and the proximal aorta. That’s why the statement that they share the same normal pressure range is true. The left atrium and right atrium have much lower pressures, the aorta’s diastolic pressure is lower than 90 mmHg (usually around 60-80), and the pulmonary artery systolic pressure is not in the 90-140 range (it’s typically around 15-30 mmHg).

During systole, the left ventricle and the proximal aorta reach effectively the same peak pressure because the LV must generate enough force to push blood into the aorta and open the aortic valve. In a healthy person, this systolic pressure is about 90-140 mmHg in both the LV and the proximal aorta. That’s why the statement that they share the same normal pressure range is true.

The left atrium and right atrium have much lower pressures, the aorta’s diastolic pressure is lower than 90 mmHg (usually around 60-80), and the pulmonary artery systolic pressure is not in the 90-140 range (it’s typically around 15-30 mmHg).