Pulmonary Vascular Resistance Calculator

Calculates PVR from mean pulmonary artery pressure, PCWP, and cardiac output.

Inputs

Color mode links each input to the matching equation term and solving arithmetic.

Equation and Work

Equation:
Solving steps:
Pressure gradient
—
mmHg
Resistance
—
mmHg·min/L
Resistance
—
dyn·s·cm⁻⁵
Normal/reference: PVR 50–150 dyn·s·cm⁻⁵, generally <200 dyn·s·cm⁻⁵ or <2.5 mmHg·min/L.

Clinical Significance

Pulmonary vascular resistance estimates resistance across the pulmonary circulation. The constant 80 converts mmHg·min/L into dyn·s·cm⁻⁵ after the pressure gradient is divided by cardiac output.

PVR is used in hemodynamic assessment of pulmonary hypertension, pulmonary embolism, and shock states.

Use mean pulmonary artery pressure, wedge pressure, and cardiac output measured in the same hemodynamic state.

References (APA 7th Edition)

  1. Attached equations reference supplied by the user for calculator equation confirmation.