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

Absolute Neutrophil Count (ANC)

Absolute Neutrophil Count = 10 * WBC count in 1000s * (% PMNs + % Bands)

Neutropenia: ANC < 1500 cells / mm³

Mild Neutropenia: 1000-1500 cells / mm³
Moderate Neutropenia: 500-999 cells / mm³
Severe Neutropenia: < 500 cells / mm³

Filgrastim (Neupogen), aka G-CSF, can stimulate production of neutrophils.

Percentage Neutrophils	%
Percentage Bands	%
WBC (per 1000. Usually reported as "8.4"; do not enter 8400.)	cells/ml
Absolute Neutrophil Count	cells/ml