Heart Health & Medical Calculators

Calculate the Revised Cardiac Risk Index from six preoperative factors, with a transparent score breakdown and clearly labeled 30-day risk estimates.

Estimate postoperative pulmonary complication risk using seven preoperative factors. Review the points behind the ARISCAT score and its limitations.

Answer 12 activity questions to calculate your Duke Activity Status Index, estimated peak oxygen uptake, and estimated METs for a structured assessment of functional capacity before noncardiac surgery.

Enter LVOT diameter, LVOT velocity time integral, and heart rate to calculate stroke volume and cardiac output. Add body surface area to obtain cardiac index.

Estimate right ventricular systolic pressure from peak tricuspid regurgitation velocity and right atrial pressure using the modified Bernoulli equation.

Calculate left ventricular relative wall thickness from end-diastolic posterior wall thickness and internal diameter, with an explanation of the 0.42 threshold.

Place a laboratory-reported Lp(a) value in the context of baseline PREVENT-ASCVD risk.

Model statin doses and selected combination therapies.

Physical activity, cardiorespiratory fitness, strength, and longevity.

Choose a protocol, then use the VO2 max calculator to enter your results.

Explore eight areas of cardiovascular health.

Explore the Vital8 assessment and its educational chatbot.

Calculate advanced Swan-Ganz hemodynamics and generate a deterministic integrated phenotype.

Calculate conventional left ventricular cardiac power output from flow and mean arterial pressure.

Calculate PAPi from pulmonary artery pulse pressure and right atrial pressure.

Calculate indexed LV work per beat using flow, heart rate, and the systemic-to-left-atrial pressure gradient.

Calculate RV stroke work index in both reporting conventions, with an explicit conversion between them.

Calculate API by relating systemic pulse pressure to mean left-sided filling pressure.

Account for right atrial pressure when calculating systemic hydraulic power.

Calculate RV hydraulic power using cardiac output and the mPAP − RAP gradient.

Combine aortic pulsatility index and conventional LV cardiac power into the LV myocardial performance score.