Free cardiovascular calculators and interactive tools for RCIS study and the cath lab — an interactive pressure-waveform atlas, plus cardiac output, cardiac index, stroke volume, shock index, mean arterial pressure, aortic valve area, QTc, BSA, and contrast dose. Every tool shows the formula and normal values.
16 cath-lab pressure tracings synced to a live ECG — toggle each chamber, compare a normal vs abnormal heart, label the a/c/v waves, and turn on breathing to watch the pressures change.
Open the atlas →Cardiac index, SV, SVR & PVR from one screen.
Open calculator →Cardiac output & index from the Fick principle.
Open calculator →CI from cardiac output and BSA, with normal ranges.
Open calculator →Stroke volume & index from output and heart rate.
Open calculator →EF % and stroke volume from EDV and ESV, with HFrEF/HFpEF grading.
Open calculator →HR ÷ SBP, an early marker of instability.
Open calculator →MAP from systolic and diastolic BP.
Open calculator →Continuity, Gorlin & Hakki equations.
Open calculator →RCRI perioperative cardiac risk score.
Open calculator →Bazett & Fridericia corrected QT interval.
Open calculator →Rate from ECG boxes (300 & 1500 methods).
Open calculator →SVR & PVR from pressures and output.
Open calculator →Mosteller BSA from height and weight.
Open calculator →Cigarroa max contrast estimate.
Open calculator →