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1,329 calculators and references across 60 specialties, with formula confidence shown up front.

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BCN Bio-HF Calculator

BCN Bio-HF (approximate implementation): Explanation and context The BCN Bio-Heart Failure (BCN Bio-HF) risk calculator is a multimarker prognostic tool developed from a contemporary outpatient heart-failure cohort. It combines routine clinical variables (age, NYHA class, LVEF, sodium, eGFR, hemoglobin, loop diuretic dose, and evidence-based treatments such as beta-blocker/ACEI/ARB/statin) with up to three serum biom

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BIOSTAT-CHF Mortality Risk (Approximation) Calculator

BIOSTAT-CHF Mortality Risk: Explanation and Clinical Context The BIOSTAT-CHF (A systems BIOlogy Study to Tailored Treatment in Chronic Heart Failure) program developed and validated multivariable risk models for outcomes in heart failure using a large European cohort (index n≈2,516; validation n≈1,738). The five strongest independent predictors of all-cause mortality were: older age, higher blood urea nitrogen (BUN),

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BNP/NT-proBNP Ratio Index Calculator

BNP/NT-proBNP Ratio Index: Explanation and Clinical Context The BNP/NT-proBNP Ratio Index provides additional insight into the biochemical phenotype of heart failure and helps to differentiate between acute and chronic heart failure presentations. Both BNP and NT-proBNP are derived from proBNP, but they differ in clearance mechanisms and biological half-life. BNP is biologically active and cleared mainly by natriuret