1,329 calculators and references across 60 specialties, with formula confidence shown up front.
CAAP-AF and CABANA: Explanation and Clinical Context The CAAP-AF score predicts rhythm success following atrial fibrillation (AF) ablation by incorporating six baseline parameters: coronary artery disease, left atrial (LA) diameter, age, AF type (persistent vs paroxysmal), number of antiarrhythmic drugs failed, and female sex. Each reflects underlying atrial disease and treatment refractoriness. Higher scores correla
Atrial Fibrillation Type -- choose -- Paroxysmal Persistent Long-standing persistent eGFR (mL/min/1.73m2) Left Atrial Diameter (mm) Left Ventricular Ejection Fraction (%) Number of Prior AF Ablations : Explanation and Clinical Context This calculator integrates two validated models—APPLE and SUCCESS—to predict the likelihood of atrial fibrillation (AF) recurrence after catheter ablation. The APPLE score assigns one p
CL Score (CTO Lesion Complexity): Explanation and Clinical Context The CL Score (CTO Lesion Complexity Score) is an angiographic grading system used to predict the procedural success rate of percutaneous coronary intervention (PCI) in chronic total occlusion (CTO) lesions. It is derived from the validated J-CTO score, first introduced by Morino et al. in 2011, and evaluates five anatomical features that influence the
COAPT Score (MitraClip Responder Model): Explanation and Clinical Context The COAPT Score is a simple point-based model derived from the COAPT randomized trial to stratify the 2-year risk of all-cause death and/or heart failure hospitalization in patients with heart failure and significant secondary mitral regurgitation despite guideline-directed medical therapy. It assigns weighted points to clinical and echocardiog
: Explanation and Clinical Context This tool provides a simplified risk estimate for a composite adverse outcome (including mortality, major complications such as moderate‑severe paravalvular leak, pacemaker implantation, or valve thrombosis) at 1 year after transcatheter aortic valve replacement (TAVR) using either a self‑expandable device (e.g., CoreValve) or a balloon‑expandable device (e.g., Sapien). The model in
Cryo vs RF Efficacy Model: Explanation and Clinical Context This calculator estimates the probability of remaining free from atrial tachyarrhythmia about 12 months after a single catheter ablation procedure and compares cryoballoon ablation (Cryo) with radiofrequency ablation (RF). It uses the validated APPLE score (Age > 65 years, persistent AF, eGFR < 60 ml/min/1.73 m2, left atrial diameter ≥ 43 mm, and LVEF < 50%)
CT-Based Annulus Sizing Index: Explanation and Clinical Context The CT-Based Annulus Sizing Index is a quantitative parameter used to assess the relationship between the native aortic annulus size (derived from CT imaging) and the selected transcatheter heart valve (THV) size. It provides an objective measure of oversizing or undersizing during pre-procedural transcatheter aortic valve replacement (TAVR) planning. Th