Right Heart Cath // hemodynamics

Enter measured values. Derived parameters update live. Not a substitute for clinical judgment.

Inputs

Demographics

Age ≥ 70 years sets VO₂ est. to 110·BSA

VO₂ auto: 125·BSA mL/min

Heightcm

Weightkg

BSA auto from ht/wt, or enter directlym²

Oxygen & output

Heart ratebpm

Hemoglobing/dL

Arterial O₂ sat SaO₂%

Mixed venous O₂ sat SvO₂ (PA)%

Thermodilution CO if measured directlyL/min

Pressures

RA a / v waves & mean (CVP) mmHg

RV systolic / EDP mmHg

PA systolic / diastolic / mean mmHg

PCWP wedgemmHg

LA a / v waves & mean mmHg

LV systolic / EDP mmHg

Ascending aorta systolic / diastolic / mean mmHg

Systemic (cuff) systolic / diastolic / MAP mmHg

Derived

Interpretation

—

MAP calculator — standalone, feeds nothing

/ = — mmHg MAP

MAP = (systolic + 2 × diastolic) / 3

Formulas.
BSA (DuBois) = 0.007184 · ht^0.725 · wt^0.425. Fick CO = VO₂ / (1.34 · Hb · 10 · (SaO₂−SvO₂)). CI = CO / BSA · SV = CO·1000/HR. SVR = 80·(MAP−RAP)/CO dynes, or (MAP−RAP)/CO Wood units. Indexed forms (SVRI, PVRI, TPRI) use CI in place of CO. PVR = 80·TPG/CO dynes = TPG/CO WU. TPG = mPAP−PCWP · DPG = PAd−PCWP. TPR (total pulmonary) = 80·mPAP/CO dynes = mPAP/CO WU. Wood units = dynes ÷ 80. Cardiac power output = MAP·CO/451. PA compliance = SV/(PAs−PAd).

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Inputs

Derived

Interpretation Copy

MAP calculator — standalone, feeds nothing

Interpretation