Real Time RFR
Resistance-Flow Ratio · Patel, Weiner, Levin et al.
Hemodynamic Parameters
If PP is entered below, only SVRI or CI is needed — the other is derived.
Perfusion Pressure (OPTIONAL) — auto-derived if SVRI+CI both entered
Fixed Cardiac Output
LVAD · ECMO · Cardiopulmonary Bypass
Formulas
RFR = SVRI / CI = (MAP−CVP) × 80 / CI²
PP = MAP − CVP  ·  CI = CO / BSA
SVRI = (PP × 80) / CI = SVR × BSA
Real Time RFR
Hemodynamic Results
SVRI vs CI — Hemodynamic Map
RFR = 900
RFR = 400
PP = 50 mmHg
Calculated Values