1,329 calculators and references across 60 specialties, with formula confidence shown up front.
Amyloidosis Cardiac Stage (Mayo 2012): Explanation and Clinical Context The Mayo 2012 staging system is designed for patients with systemic light-chain (AL) amyloidosis and provides prognostic information based on cardiac involvement. It uses three biomarkers: NT-proBNP (>1800 pg/mL), Troponin T (>0.025 ng/mL), and difference in free light chains (dFLC >180 mg/L). Each abnormal biomarker counts as one risk factor. St
Apical HCM Index: Explanation and Clinical Context The Apical HCM Index is a simple echocardiographic metric calculated as the ratio of maximal apical wall thickness to the left ventricular end-diastolic diameter (LVEDD). It was first described by Kobayashi et al. to identify patients with apical hypertrophic cardiomyopathy (HCM), particularly in populations where this variant is more prevalent, such as in Japan. An
Arrhythmogenic Left Ventricular Cardiomyopathy (ALVC) Score: Explanation and Clinical Context ALVC Score is a validated risk prediction tool for patients with arrhythmogenic left ventricular cardiomyopathy, aimed at estimating the risk of arrhythmic events over a 5-year period. It incorporates key clinical and imaging parameters, including age, sex, presence of non-sustained ventricular tachycardia (NSVT), left ventr
Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) Risk Calculator (ESC 2022): Explanation and Clinical Context This tool estimates the 5-year risk of ventricular arrhythmias in patients diagnosed with ARVC based on the ESC 2022 risk model (Cadrin-Tourigny J, et al., Eur Heart J. 2022;43:1664–1678). The model incorporates age, sex, right ventricular dysfunction, history of non-sustained ventricular tachycardia, n