Final answer:
Pulmonary wedge pressure (PWP) is the correct method to monitor left ventricular end-diastolic pressure, as it provides an indirect measure of left atrial pressure and therefore the LVEDP. This measurement is taken using a Swan-Ganz catheter during a right heart catheterization.
Step-by-step explanation:
To monitor left ventricular end-diastolic pressure (LVEDP), the appropriate clinical measure would be pulmonary wedge pressure (PWP, also known as the pulmonary capillary wedge pressure PCWP). PWP is an indirect measure of left atrial pressure and, under normal conditions, is a good approximation of left ventricular end-diastolic pressure. This measure is obtained using a specialized catheter called a Swan-Ganz catheter, which is inserted through the right side of the heart and into the pulmonary artery. When this catheter is properly positioned and the balloon at its tip is inflated, it temporarily occludes a small branch of the pulmonary artery, allowing the measurement of the blood pressure proximal to the occlusion, which reflects the left ventricular end-diastolic pressure.
The other options provided, such as pulmonary artery pressure (PAP), central venous pressure (CVP), and cardiac index (CI) do not specifically reflect the left ventricular end-diastolic pressure. PAP measures the pressure in the pulmonary artery, CVP reflects right atrial pressure, and CI is a measure of cardiac output relative to body surface area, none of which accurately monitor LVEDP.