eRHC Calculator PRO

eRHC Calculator PRO is a hemodynamic calculator app for qualified healthcare professionals, used during right heart catheterization (RHC) procedures. Here's what it contains:

App Purpose A clinical calculation and documentation tool for invasive hemodynamic measurements — specifically tied to the ALLAY-HF and ALLAY-HFrEF clinical studies.

Key Features Patient data management — save/load/share patient records as JSON files, with patient ID, institution, weight/height (kg/lb, cm/in), DOB, and BSA calculation Multi-stage calculator — timed hemodynamic measurements across stages (rest, exercise, etc.) with vitals, pressures, V-waves, CO via thermodilution or Fick method Threshold system — configurable alert thresholds with rules (lower/upper bound, range, special PCWP rules) Time synchronization — reference clock offset for procedure timing Print/share results — formatted report output Formula reference — all formulas listed (BSA, mPAP, PCWP, TPG, VO₂, CO, CI, PVR) Formulas Implemented BSA: Mosteller (general) and Du Bois (Fick-specific) mPAP: (sPAP + 2×dPAP) / 3 PCWP from V-Wave: ((V-High − V-Low)/3) + V-Low TPG: mPAP − PCWP VO₂: Gender-specific regression equations (Dehmer et al.) O₂ content: (Sat/100 × Hb × 1.36) + dissolved O₂ CO (Fick): VO₂ / (arteriovenous O₂ difference × 10) CI: CO / BSA PVR: (mPAP − PCWP) / CO (in Wood units)

Legal/Info Developer: Andreas Kuhl, Germany Fully offline — no data collection, no internet, all data stays on device Medical disclaimer: intended as a calculation aid only, not for standalone clinical decisions © 2025-2026 Andreas Kuhl

Clinical References Citations link to PubMed/journals for Mosteller, Chemla, Rajagopalan, Simonneau, ESC/ERS 2022 PH Guidelines, Du Bois, Dehmer, Severinghaus, Fick, and others.