What is the normal pressure in the PCWP/Left Atrium (LA)?

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Multiple Choice

What is the normal pressure in the PCWP/Left Atrium (LA)?

Explanation:
Pulmonary capillary wedge pressure mirrors left atrial pressure, so it reflects left-sided filling pressures. In a healthy person at rest, this pressure is typically in the 4–12 mmHg range. The wedge measurement is obtained by wedging a catheter in a small pulmonary artery branch, which equilibrates with the left atrium when there’s no obstruction. Therefore, the normal range for PCWP/LA pressure is about 4–12 mmHg. Values below this suggest low preload, while values above indicate elevated left-sided pressures, such as in left ventricular dysfunction or volume overload.

Pulmonary capillary wedge pressure mirrors left atrial pressure, so it reflects left-sided filling pressures. In a healthy person at rest, this pressure is typically in the 4–12 mmHg range. The wedge measurement is obtained by wedging a catheter in a small pulmonary artery branch, which equilibrates with the left atrium when there’s no obstruction. Therefore, the normal range for PCWP/LA pressure is about 4–12 mmHg. Values below this suggest low preload, while values above indicate elevated left-sided pressures, such as in left ventricular dysfunction or volume overload.

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