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

Strep Pharyngitis Probability (Modified Centor) Score

Patient Age Range (not valid for <2)	3-14 years old +1 15-44 years old 0 ≥ 45 years old -1
Exudate or Swelling on Tonsils?	Yes +1
Tender/swollen anterior cervical lymph nodes?	Yes +1
Fever? (T > 38° C, 100.4 F)	Yes +1
Absense of Cough?	Yes +1
Probability of Strep Pharyngitis

Source: Empirical Validation of Guidelines for the Management of Pharyngitis in Children and Adults.