Which pressure is listed as having a mean value of 13-14 mm Hg?

Which pressure is listed as having a mean value of 13-14 mm Hg?

• A. Mean pulmonary artery pressure
• B. Mean arterial pressure
• C. Right atrial pressure
• D. Pulmonary capillary wedge pressure

Answer: (A)

Understanding normal ranges for cardiovascular pressures helps identify the correct choice. The mean pulmonary artery pressure in a healthy person is about 12 to 16 mm Hg, so a mean value of 13–14 mm Hg fits this range. The other pressures have different typical means: mean arterial pressure is usually much higher (roughly 70–105 mm Hg), right atrial pressure is quite low (around 2–6 mm Hg), and pulmonary capillary wedge pressure is also low (about 6–12 mm Hg). Therefore, the pressure with a mean value of 13–14 mm Hg is the mean pulmonary artery pressure.

Understanding normal ranges for cardiovascular pressures helps identify the correct choice. The mean pulmonary artery pressure in a healthy person is about 12 to 16 mm Hg, so a mean value of 13–14 mm Hg fits this range. The other pressures have different typical means: mean arterial pressure is usually much higher (roughly 70–105 mm Hg), right atrial pressure is quite low (around 2–6 mm Hg), and pulmonary capillary wedge pressure is also low (about 6–12 mm Hg). Therefore, the pressure with a mean value of 13–14 mm Hg is the mean pulmonary artery pressure.