![]() ![]() by optimizing the PCWP according to the patients individual Starling curve, opitimal Cardiac Output - PCWP 12, in absence of severe cardiac dz, means pulmonary congestion due to fluid overload or CHF in critically ill patients, ventricular Compliance is altered, and there may be no correlation between pressure and volume, making it impossible to estimate left ventricular Preload from the wedge nevertheless, the wedge reflects mean left ventricular diastolic pressure and is therefore a useful index to estimate not only the possible risk of the development of pulmonary edma, but also left ventricular Preload height of the pulmonary wave or the pulmonary capillary a wave is the most consistent accurate indirect index for sudden changes in actual left ventricular end diastolic pressure however, in presence of elevated left ventricular end diastolic pressure (height of ventricular filling pressure just before ventricular contraction) caused either by an increase in end diastolic volume or a decrease in left ventricular Compliance, the wedge does not accurately reflect the left ventricular end- diastolic pressure, which may significantly exceed mean wedge ![]() in absence of obstruction of mitral valve ( MS) wedge pressure also approximates the mean left ventricular diastalic pressure in absence of pulmonary HTN, > 10 cm PEEP, or mitral valve dz, it reflects left atrial Pressure ( Preload), and is measured after inflation of the balloon, which allows the tip of the catheter to wedge in a capillary ![]()
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