Right Ventricular Stroke Work Index
This calculator estimates the Right Ventricular Stroke Work Index (RVSWI), a key hemodynamic parameter used to assess right ventricular performance in patients with heart failure, pulmonary hypertension, or undergoing cardiac surgery. It uses stroke volume index (SVI) and mean pulmonary artery pressure (MPAP) to calculate the RVSWI value.
RVSWI Value Calculator
RVSWI Calculation Formula
Where:
- $$SVI$$ = Stroke Volume Index (mL/beat/m²)
- $$MPAP$$ = Mean Pulmonary Artery Pressure (mmHg)
- 0.0144 is a constant used to convert to g·m/m²
RVSWI is a quantitative measurement of the right ventricle’s workload per unit of body surface area. It is particularly useful in intensive care and cardiac catheterization labs to evaluate right heart function. High values may indicate pulmonary hypertension or increased afterload, while low values suggest right ventricular failure. Inputs needed are SVI (stroke volume normalized to body surface area) and MPAP (average pressure in the pulmonary artery).