What hemodynamic measurement reflects systemic arterial pressure?

The measurement that accurately reflects systemic arterial pressure is the mean arterial pressure (MAP). MAP is a calculated value that provides an average blood pressure in a person's arteries during one cardiac cycle, accounting for both diastolic and systolic pressures. It is crucial for understanding the perfusion pressure experienced by tissues and organs, making it a vital indicator of overall cardiovascular health.

MAP is determined using the formula:

MAP = DBP + (1/3)(SBP - DBP),

where DBP is diastolic blood pressure and SBP is systolic blood pressure. This calculation gives a good estimation of the pressure that drives blood to the tissues, making it an important measurement in various clinical settings, especially in critical care.

Other hemodynamic measurements, such as pulmonary artery pressure (PAP), central venous pressure (CVP), and pulmonary capillary wedge pressure (PCWP), reflect different aspects of cardiovascular function and pressures. While PAP indicates pressure in the pulmonary circulation, CVP provides information about right atrial pressure and fluid status, and PCWP is related to left heart filling pressures. However, none of these specifically represent systemic arterial pressure the way MAP does, which is why MAP is the most suitable answer for this question.