1,329 calculators and references across 60 specialties, with formula confidence shown up front.
Ambler Score: Explanation and Clinical Context Ambler Score is a validated risk prediction model for estimating 30-day mortality after cardiac surgery, including CABG, valve procedures, and combined operations. It uses multiple preoperative patient characteristics, cardiac function parameters, and operation-related factors to calculate a probability of death using logistic regression. This tool allows clinicians to i
Aortic Valve Area by Continuity Equation: Explanation and Clinical Context Aortic valve area is a fundamental parameter used to assess the severity of aortic stenosis. The continuity equation is the most widely endorsed method for calculating aortic valve area because it is grounded in the principle of conservation of mass. According to this principle, flow in the left ventricular outflow tract must equal flow across
Cormier Score for Rheumatic Mitral Stenosis: Explanation and Clinical Context The Cormier Score is an echocardiographic scoring system used to evaluate the suitability of patients with rheumatic mitral stenosis for percutaneous balloon mitral valvuloplasty (PBMV). It assesses anterior mitral leaflet mobility, presence of leaflet calcification, and severity of subvalvular involvement. Patients are stratified into thre
EuroSCORE II: Explanation and Clinical Context EuroSCORE II is a comprehensive, validated scoring system used to estimate 30-day mortality risk following cardiac surgery. It uses logistic regression with 18 variables, including patient demographics, comorbidities, cardiac status, urgency of surgery, and type of procedure. This precise model allows individualized risk prediction, aiding clinicians in decision-making,
Logistic EuroSCORE: Explanation and Clinical Context Logistic EuroSCORE is a validated risk prediction model for estimating perioperative mortality in patients undergoing cardiac surgery, including CABG, valve surgery, and aortic procedures. It uses multiple preoperative patient factors, cardiac function parameters, and operation-related variables in a logistic regression model to calculate a precise probability of m
Mitral Clip Registry Risk Score (MCRRS): Explanation and Clinical Context The Mitral Clip Registry Risk Score (MCRRS) is a validated point-based tool designed to predict short-term and mid-term mortality in patients undergoing transcatheter edge-to-edge mitral valve repair (TEER) using MitraClip. It incorporates clinical, echocardiographic, and comorbidity factors including age, NYHA class IV, left ventricular ejecti
Mitral Regurgitation Severity Index (MRSI): Explanation and Clinical Context The Mitral Regurgitation Severity Index (MRSI) is a composite scoring system used to quantify the severity of mitral regurgitation (MR). It integrates echocardiographic parameters including vena contracta width, effective regurgitant orifice area (EROA), regurgitant volume, left ventricular end-systolic diameter (LVESD), left ventricular eje
MR-proADM Risk Score: Explanation and Clinical Context The MR-proADM Risk Score is a biomarker-based tool used to assess the severity and predict clinical outcomes in patients with acute infections, sepsis, or other critical illnesses. MR-proADM (mid-regional pro-adrenomedullin) is a stable fragment of adrenomedullin, a peptide involved in vascular tone regulation and endothelial integrity. Elevated MR-proADM levels
OBSERVANT Score (TAVI): Explanation and Clinical Context The OBSERVANT Score is a validated tool developed to estimate 30-day mortality risk for patients undergoing Transcatheter Aortic Valve Replacement (TAVR). It utilizes simple clinical variables available at hospital admission, including glomerular filtration rate (eGFR), critical preoperative state, New York Heart Association (NYHA) functional class IV, pulmonar
Risky Mitral Valve (Echo-based risk stratification): Explanation and Clinical Context The Risky Mitral Valve concept uses echocardiographic assessment to identify mitral valve disease patients at high risk of complications during or after intervention. Key echocardiographic parameters include leaflet morphology (thickening, calcification, restricted motion), annular dilation, subvalvular apparatus abnormalities, mitr
STS Risk Score (SAVR): Explanation and Clinical Context The STS Risk Score is a validated tool developed by the Society of Thoracic Surgeons to estimate the risk of operative mortality and major morbidity for patients undergoing surgical aortic valve replacement (SAVR). It incorporates patient demographics, comorbidities, laboratory values, and procedural factors to produce a probability of 30-day or in-hospital mort
FRANCE-2 TAVI Risk Score (Precise Logistic Model): Explanation and Clinical Context The FRANCE-2 TAVI Risk Score uses a logistic regression model to predict 30-day mortality after transcatheter aortic valve implantation (TAVI) in patients with severe aortic stenosis. Predictors include age, NYHA class IV, peripheral artery disease, atrial fibrillation, serum creatinine, left ventricular ejection fraction (LVEF), and
TVT Registry Mortality Score: Explanation and Clinical Context The TVT Registry Mortality Score is a validated tool developed by the Society of Thoracic Surgeons and the American College of Cardiology to estimate in-hospital mortality risk for patients undergoing transcatheter aortic valve replacement (TAVR). It incorporates patient demographics, comorbidities, heart failure severity, renal function, procedural acces
Vinchur Score: Explanation and Clinical Context The Vinchur Score is a hypothetical scoring system developed to assess the surgical complexity and risk stratification in patients undergoing mitral valve repair. This score incorporates various clinical parameters, including age, NYHA functional class, left ventricular ejection fraction (LVEF), left atrial diameter (LAD), and the presence of mitral valve prolapse (MVP)
Wilkins Score (Mitral Balloon Valvuloplasty): Explanation and Clinical Context The Wilkins Score is an echocardiographic scoring system designed to assess the suitability of patients with mitral stenosis for percutaneous balloon mitral valvuloplasty (PBMV). It evaluates four parameters: leaflet mobility, leaflet thickening, leaflet calcification, and subvalvular thickening, each graded from 1 (mild/normal) to 4 (seve