Pulmonary capillary wedge pressure
| Location | Pressure (mm Hg) |
|---|---|
| Right atrium | Mean: 1-6 |
| Right ventricle | Systolic: 15-30 Diastolic: 1-6 |
| Pulmonary artery | Systolic: 15-30 Diastolic: 6-12 |
| Left atrial/PCWP/LVEDP | Mean: 6-12 |
The left atrium and pulmonary veins are thin-walled and highly compliant chambers. Because of this, any pressure changes in the left atrium are readily transmitted to the pulmonary veins, including the wedged position of the catheter. So, PCWP essentially mirrors LAP.
The normal pulmonary capillary wedge pressure is between 4 to 12 mmHg.