pulmonary capillary wedge pressure

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The pulmonary capillary wedge pressure (PCWP) is measured when the Swan-Ganz catheter is embedded in a pulmonary artery with the balloon inflated.

In this position there is a continuous column of fluid between the tip of the catheter and the left atrium. For this reason, the PCWP reflects the left atrial pressure and the left ventricular end-diastolic pressure.

Last reviewed 01/2018