Side-by-side comparison helps you choose the right calculator for a specific clinical question.
Cardiology
Classify heart failure severity using the New York Heart Association (NYHA) functional classification system. Classes I–IV based on physical activity limitations.
Formula
Subjective classification based on physical activity tolerance. Classes I–IV.
Inputs
Cardiology
Calculate the CHA₂DS₂-VASc score to estimate stroke risk in patients with atrial fibrillation and guide anticoagulation therapy decisions.
Formula
Score = CHF(1) + Hypertension(1) + Age≥75(2) + Diabetes(1) + Stroke(2) + Vascular(1) + Age 65–74(1) + Female(1)
Inputs