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49 of 62 calculators
Anesthesiology
Biostatistics and Research
Cardiology
- CHA₂DS₂-VAScCHA₂DS₂-VASc scoreStroke risk in nonvalvular atrial fibrillation to guide anticoagulation.
- HAS-BLEDHAS-BLED scoreOne-year major bleeding risk on anticoagulation for atrial fibrillation.
- QTcCorrected QT interval (QTc)QTc by Bazett, Fridericia, Framingham, and Hodges side by side.
- LDLLDL cholesterol (Friedewald)Calculated LDL-C and non-HDL cholesterol.
Clinical Nutrition
Critical Care
- AGAnion gap (with albumin correction)Serum anion gap, albumin-corrected gap, and delta-delta ratio.
- Winter'sWinter's formula (expected PaCO₂)Checks respiratory compensation in metabolic acidosis.
- FWDFree water deficitWater deficit in hypernatremia using age- and sex-based total body water.
- MAPMean arterial pressureMAP from systolic and diastolic pressure.
- PBW VtPredicted body weight and tidal volumeARDSNet predicted body weight and 4 to 8 mL/kg tidal volumes.
Emergency Medicine
- HEARTHEART score for chest painSix-week major adverse cardiac event risk in emergency department chest pain.
- Wells PEWells criteria for pulmonary embolismPretest probability of pulmonary embolism.
- PERCPERC rule for pulmonary embolismRules out PE without testing in low-pretest-probability patients.
- Wells DVTWells criteria for DVTPretest probability of lower-extremity deep vein thrombosis.
- qSOFAqSOFABedside screen for poor outcome in suspected infection outside the ICU.
- GCSGlasgow Coma ScaleLevel of consciousness from eye, verbal, and motor responses.
- SIShock indexHeart rate divided by systolic blood pressure.
Endocrinology
Hematology and Oncology
Hepatology
Nephrology
- CrClCreatinine clearance (Cockcroft–Gault)Estimates creatinine clearance for renal drug dosing, with every dosing weight compared side by side.
- eGFReGFR (CKD-EPI 2021, creatinine)Race-free CKD-EPI 2021 estimated GFR from serum creatinine, age, and sex.
- FENaFractional excretion of sodium (FENa)Separates prerenal from intrinsic acute kidney injury.
- FEUreaFractional excretion of urea (FEUrea)Prerenal versus intrinsic AKI when the patient has received diuretics.
OB-Gyn
Pain Management
Pediatrics
- SchwartzBedside Schwartz eGFR (pediatric)Pediatric eGFR from height and serum creatinine (2009 bedside equation).
- mg/kgWeight-based dose (mg/kg)Dose per administration and per day from mg/kg, with a maximum-dose cap and liquid volume.
- APLS wtPediatric weight estimate (APLS)Emergency weight estimate from age when a child cannot be weighed.
Pharmacokinetics
- Vanco AUCVancomycin AUC dosingAUC-guided vancomycin dosing from population estimates or from two levels, with a live drug-level curve.
- Gent/Tobra/AmikAminoglycoside dosing (gentamicin, tobramycin, amikacin)Extended-interval and traditional dosing, and adjustment from levels, with a live drug-level curve.
Pharmacy
- IBWIdeal body weight (Devine)Devine ideal body weight from height and sex, used for weight-based dosing and ventilator settings.
- AdjBWAdjusted body weightIdeal body weight plus 40% of the excess, for dosing in patients above ideal weight.
- SteroidCorticosteroid dose conversionEquivalent glucocorticoid doses between common corticosteroids.
- LBWLean body weight (Janmahasatian)Fat-free mass estimate for dosing in obesity.
Primary Care
Pulmonology
Surgery (Plastic and Burns)
Toxicology
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