MDCalc

All calculations must be re-checked by hand and should not be used alone to guide patient care. See disclaimer for more. Light green = required. Once required data is entered, click anywhere for results.

Equations

• A-a O₂ Gradient
• Abs Neutrophil Count
• Abs Retic Count (Retic Index)
• Age
• Anion Gap (w/Delta Gap)
• Basal Energy Expenditure
• Bayes Sensitivty & Specificity
• Bicarb Deficit
• BMI/Surface Area
• Calcium Correction in Hypoalbuminemia
• Cockcroft-Gault GFR
• Cardiac Output (Fick)
• Corrected QT (QTc)
• Corrected Sodium
• CSF WBC Correction for RBCs
• Endotracheal Tube Size for Children
• FENa
• FEUrea
• Ideal Body Weight by Height
• LDL (Calculated)
• Maddrey's Discriminant Function
• Maintenance Fluids
• MDRD GFR
• Mean Arterial Pressure (MAP)
• Oxygenation Index
• Parkland Burns
• Pedi Ins & Outs
• Sodium Deficit
• Serum Osmolality
• Stool Osmolal Gap
• Transtubular Potassium Gradient
• Water Deficit
• Winter's Formula

Scores

• APACHE II Score for ICU Mortality
• APGAR Score
• Cardiac Risk (Framingham)
• CHADS2 Score for Afib
• PORT Score / CAP Risk
• Glasgow Coma Score
• MELD Score
• Ottawa Ankle and Pittsburgh Knee Rules
• Ranson's Pancreatitis Mortality
• San Francisco Syncope Rule
• Strep Probability Score
• TIMI Score for UA/NSTEMI
• TIMI Score for STEMI
• Well's Criteria for PE

MDCalc Disclaimer

I've put this on all the pages, but just so we're clear--I've triple- and quadruple-checked these calculations and equations to make sure they're consistent and accurate, but the answers are only as good as the numbers you put in. By using the site, you agree that you will not hold me or this website liable for any problems that occur.

Summary--you went to medical school for a reason. Double-check your work, and trust your clinical judgment over a number. If the Glasgow Coma Scale comes out 14/15, but the patient's unarousable, which do you think is right?