Emergency Medicine
24 of 62 calculators
- 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.
- Osm gapCalculated osmolality and osmolal gapCalculated serum osmolality and the gap versus measured, for toxic alcohols.
- Na corrSodium correction for hyperglycemiaCorrected sodium using the Katz (1.6) and Hillier (2.4) factors.
- FWDFree water deficitWater deficit in hypernatremia using age- and sex-based total body water.
- 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.
- CURB-65CURB-65 for pneumonia severity30-day mortality in community-acquired pneumonia to guide site of care.
- qSOFAqSOFABedside screen for poor outcome in suspected infection outside the ICU.
- GCSGlasgow Coma ScaleLevel of consciousness from eye, verbal, and motor responses.
- MAPMean arterial pressureMAP from systolic and diastolic pressure.
- SIShock indexHeart rate divided by systolic blood pressure.
- QTcCorrected QT interval (QTc)QTc by Bazett, Fridericia, Framingham, and Hodges side by side.
- A–aA–a oxygen gradient and P/F ratioAlveolar–arterial gradient, expected value for age, and PaO₂/FiO₂ ratio.
- PBW VtPredicted body weight and tidal volumeARDSNet predicted body weight and 4 to 8 mL/kg tidal volumes.
- mcg/kg/minWeight-based infusion rateConverts a weight-based dose to mL/h from the bag concentration.
- mg/kgWeight-based dose (mg/kg)Dose per administration and per day from mg/kg, with a maximum-dose cap and liquid volume.
- LA maxMaximum local anesthetic dose (medical)Weight-based maximum for infiltration and nerve blocks, and the volume at your concentration.
- ParklandParkland formula for burns24-hour resuscitation fluid for burns, split into the first 8 and next 16 hours.
- O₂ tankOxygen cylinder durationMinutes of oxygen left in a cylinder at a given flow.
- APLS wtPediatric weight estimate (APLS)Emergency weight estimate from age when a child cannot be weighed.
- TBSABurn TBSA (adult rule of nines)Total body surface area burned for adults.
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