Normal Pressures in the Heart and Great Vessels

Type of Pressure

Average (mm Hg)

Range (mm Hg)

Right atrium

3

0–8

Right ventricle

Peak-systolic

25

15–30

End-diastolic

4

0–8

Pulmonary artery

Mean

15

9–16

Peak-systolic

25

15–30

End-diastolic

9

4–14

Pulmonary artery occlusion (pulmonary artery wedge)

Mean

9

2–12

Left atrium

Mean

8

2–12

A wave

10

4–16

V wave

13

6–12

Left ventricle

Peak-systolic

130

90–140

End-diastolic

9

5–12

Brachial artery

Mean

85

70–150

Peak-systolic

130

90–140

End-diastolic

70

60–90

Adapted from Fowler NO: Cardiac Diagnosis and Treatment, ed 3. Philadelphia, JB Lippincott, 1980, p. 11.