Cardiology

Planning calculators for cardiology — estimates from industry-style inputs.

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Revised Cardiac Risk Index (RCRI/Lee Index) for estimating perioperative major cardiac event risk.

Calculate target heart rate using the Karvonen formula with heart rate reserve. Includes all five training zones.

Analyze ECG/EKG intervals with corrected QT calculation (Bazett, Fridericia, Hodges) and interpretation of PR, QRS, and QT intervals.

Calculate cardiac output using the Fick principle from oxygen consumption and arteriovenous oxygen difference.

Estimate SYNTAX score complexity and compare PCI vs CABG outcomes for revascularization decision-making.

Warfarin dose adjustment calculator based on current INR, target range, and weekly dose with recheck interval recommendations.

Generate an exercise prescription for cardiac rehabilitation using heart rate reserve, RPE, and estimated METs from stress test results.

Calculate aortic or mitral valve area using the Gorlin equation from cardiac catheterization data.

Interpret BNP or NT-proBNP levels for heart failure diagnosis with age-stratified cutoffs and renal/obesity adjustments.

Calculate pacemaker timing intervals, battery drain, TARP, tracking limits, and safety margins from programmed settings.