PA Systolic Pressure Unit Converter
Convert between mmHg, kPa
Also known as: PASP, Pulmonary Artery Systolic Pressure, RVSP, Right Ventricular Systolic Pressure, PA Systolic
Convert PA Systolic Pressure
What is PA Systolic Pressure?
Pulmonary artery systolic pressure (PASP) is the peak pressure inside the pulmonary arteries when the right side of the heart contracts and pushes blood toward the lungs. It reflects how hard the right ventricle must work to move blood through the lung circulation.
Normal PASP is generally below 25 mmHg at rest when measured by catheterization, or below 30 mmHg when estimated by echocardiography. Values above these thresholds may suggest pulmonary hypertension.
PASP is most commonly estimated noninvasively using Doppler echocardiography. The expected upper limit can vary by age, sex, and body mass index.
Where Does PA Systolic Pressure Come From?
PASP is generated by the contraction of the right ventricle of the heart as it ejects blood into the pulmonary artery and through the lung vasculature. It is determined by the volume of blood flow, the resistance of the pulmonary blood vessels, and the pressure transmitted from the left side of the heart.
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