Medical Equations


Click a letter to jump to that section. Click on a link below to use a formula or criteria.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z


  A

A-a Gradient

AaPO2 Correction for FIO2

a/A Ratio

Absolute Lymphocyte Count

Absolute Neutrophil Count

Absolute Reticulocyte Count

Acid-Base Graph / Interactive Grogono Diagram

Amikacin Dosing q24hr (also Kanamycin and Streptomycin)

Aminoglycoside Clearance Estimate

Amortization of Student Loans

Anion Gap

Anion Gap Delta Multicalc®

Anion Gap in Hypoalbumin States

Area Unit Conversions

Ascites Albumin Gradient

  B

Basic Unit Conversions

Bayesian Statistics I MultiCalc®

Bayesian Statistics II MultiCalc®

Benefit Increase / Number Needed to Treat Multicalc®

Benzodiazepine Medication Dosing Conversions

Bicarbonate Deficit

Body Mass Index (Quetelet's index)

Body Surface Area (Du Bois Method)

Body Surface Area (Mosteller, Square Root Method)

Burn Injury Fluid Resuscitation ( Brooke estimate )

Burn Injury Fluid Resuscitation ( Demling dextran estimate )

Burn Injury Fluid Resuscitation ( Evans estimate )

Burn Injury Fluid Resuscitation ( Modified Brooke crystalloid estimate )

Burn Injury Fluid Resuscitation ( Parkland crystalloid estimate )

Burn Injury Fluid Resuscitation ( Slater estimate )

  C

Calcium Correction in Hypoalbuminemia

Calcium Correction in Hypoalbuminemia (SI Units)

Cardiac Output

Cardiac Output MultiCalc®

Chi Square Analysis

Closing Capacity

Closing Capacity to Total Lung Volume Capacity

Closing Volume to Vital Capacity Ratio

Comprehensive Unit Conversions

Confidence Interval of a Survey

Confidence Interval of a Binomial Proportion

Confidence Interval of a Difference Between Proportions

Confidence Interval of a Ratio of Proportions

Confidence Interval of a Ratio of Ratios

Corticosteroid Medication Dosing Conversions (Glucocorticoid Effect)

Corticosteroid Medication Dosing Conversions (Mineralocorticoid Effect)

Creatinine clearance estimate for changing serum creatinine

Creatinine Clearance Estimate by Abbreviated MDRD Study Equation

Creatinine Clearance

Creatinine Clearance by Mass

Creatinine Clearance Estimate

Creatinine Clearance Estimate (SI Units)

Creatinine Clearance (SI Units)

CSF IgG Index

CSF Protein Concentration Correction in Blood Contaminated CSF

CSF WBC Correction in Blood Contaminated CSF

  D

Density Unit Conversions

Digitalis Body Load

  E

Energy Unit Conversions

Epoprostenol (Flolan) infusion rate calculator

  F

False Negative Rate from Sensitivity and Prevalence

False Negative Ratio from Sensitivity and Prevalence

False Positive Rate from Specificty and Prevalence

False Positive Ratio from Specificity and Prevalence

Fentanyl Patch Initial Dosing Estimate Based on Prior Narcotic Dosing

Flow Unit Conversions

Force Unit Conversions

Fractional Excretion of Amylase ( Amylase to Creatinine Clearance Ratio )

Fractional Excretion of Sodium

Fractional Excretion of Sodium (SI Units)

Friedewald Equation for Low Density Lipoprotein

Functional Residual Capacity

  G

Gentamicin Dosing q24hr (also Tobramycin)

GFR Estimation using the MDRD Equation (Modification of Diet in Renal Disease Study Group)

GFR Estimate by Quadratic Equation

Glomerular Filtration Rate Estimation by MDRD Equation

Gorlin Formula for Valve Area

  H

Harris-Benedict Estimation of Basal Energy Expenditure

Hemoglobin A1C Estimation from Mean Plasma Glucose

Hemoglobin A1C to Mean Plasma Glucose Estimation

Henderson-Hasselbach Equation

Hepatitis C Fibrosis Prediction Score

Housestaff Activity Index

Hyponatremia Correction Infusate Rate

  I

Ideal Body Weight

Ideal Body Weight Percentage

IME Ajusted Ratio for Medical Education Medicare Payments to Teaching Hospitals

Inspiratory Capacity

International Normalized Ratio of Prothrombin Time

Iron Replacement (parenteral dosing) for Iron Deficiency

  K

Kappa Measurement of Inter-observer Agreement: Bennett's Kappa

Kappa Measurement of Inter-observer Agreement: Cohen's Kappa

Kappa Measurement of Inter-observer Agreement MultiCalc®

Kappa Measurement of Inter-observer Agreement: Scott's Kappa

Kt/V Dialysis Dose Barth Formula

Kt/V Dialysis Dose Basile Formula

Kt/V Dialysis Dose Daugirdas Formula

Kt/V Dialysis Dose Formulae MultiCalc®

Kt/V Dialysis Dose Jindal Formula

Kt/V Dialysis Dose Kerr Formula

Kt/V Dialysis Dose Keshaviah Formula

Kt/V Dialysis Dose Lowrie Formula

  L

Length Unit Conversions

Likelihood Ratio MultiCalc®

Likelihood Ratio of Negative from Raw Data

Likelihood Ratio of Positive from Raw Data

Low Density Lipoprotein

Lung Volume Multicalc®

  M

MedCalc Connect Equation®

Mean Corpuscular Hemoglobin

Mean Corpuscular Hemoglobin Concentration

Mean Corpuscular Volume

Mean Vascular Pressure (Systemic or Pulmonary)

  N

Nasal Canula Oxygen Fractional Inspired O2 (FIO2) Estimate

Negative Predictive Value of a Test

Negative Predictive Value from Raw Data

Normal Range for Body Weight

Number Needed to Harm (NNH) from Odds Ratio (OR) and Patient Expected Event Rate (PEER)

Number Needed to Treat (NNT) from Odds Ratio (OR) and Patient Expected Event Rate (PEER)

  O

Odds from Probability

Odds Ratio and Relative Risk

Opioid Medication Dose Conversions

Osmolar Clearance

Osmolality Estimator (serum)

Overall Accuracy of a Test from Raw Data

Overall Accuracy of a Test from Sensitivity, Specificity and Prevalence

Oxygen Delivery Units Conversions

Oxygenation Index (OI)

  P

PaO2 Correction for FIO2

PaO2 / FIO2 Ratio (for MODS Calculation)

Peak Expiratory Flow Prediction

Peak Expiratory Flow Variability in Asthma

Phenytoin Level Adjusted for Hypoalbuminemia and Renal Function

Phenytoin: Free Drug Level Prediction Adjusted for Albumin Level

Pneumothorax Degree of Collapse

Positive Predictive Value of a Test

Positive Predictive Value from Raw Data

Post Test Odds of a Negative from Raw Data

Post Test Odds of a Negative Result from Sensitivity Specificity and Prevalence

Post Test Odds of a Positive from Raw Data

Post Test Odds of a Positive Result from Sensitivity Specificity and Prevalence

Power Unit Conversions

Pressure Unit Conversions

Pressure Adjusted Heart Rate (For MODS calculation)

Pre Test Odds from Raw Data

Pre Test Odds from Prevalence

Prevalence of a Finding or Disease from Test Data

Probability from Odds

Protein Bound Calcium

PFT Predicted Values for Boys MultiCalc®

PFT Predicted Values for Women MultiCalc®

PFT Predicted Values (Adjusted) for Women MultiCalc®

PFT Predicted Values for Girls MultiCalc®

PFT Predicted Values for Men MultiCalc®

PFT Predicted Values (Adjusted) for Men MultiCalc®

Pulmonary Vascular Resistance

  Q

QT Interval Correction (EKG)

  R

Red Blood Cell Volume by Radionucleotide Dilution

Renal Failure Index

Residual Renal Function in Hemodialysis Patients (3x/week)

Residual Volume to Total Lung Capacity Ratio

Reticulocyte Production Index

Risk Increase / Number Needed to Harm Multicalc®

Risk Reduction / Number Needed to Treat Multicalc®

  S

Sensitivity of a Test

Serum Sodium Concentration Change Considering Infused and Excreted Cations

SI Unit Conversions: Body Fluid Chemistries

SI Unit Conversions: Chemistry Values

SI Unit Conversions: Coagulation Tests

SI Unit Conversions: Drugs

SI Unit Conversions: Hematology

SI Unit Conversions: Urine Chemistry Values

Sodium Deficit in Hyponatremia

Sodium Correction in Hyperglycemia

Sodium Change in Hyperlipidemeia

Sodium Change in Hyperproteinemia

Specificity of a Test

Speed Unit Conversions

Stool Osmolal Gap

Stroke Risk in Diabetes Type 2 UKPDS 60

Survey Sample Size

Survey Sample Size with Population Correction

Systemic Vascular Resistance

  T

Temperature Unit Conversions

Textile Type Unit Conversions

Time Unit Conversions

Time Averaged Concentration of Urea in Hemodialysis

TIPS Risk predictor / Survival predictor (Transjugular Intrahepatic Portosystemic Shunt)

Total Daily Energy Requirement Estimate

Total Lung Capacity

Transferrin Saturation

Transtubular Potassium Gradient at CCD

True Negative Ratio from Specificity and Prevalence

True Positive Ratio from Sensitivity and Prevalence

  U

UNOS MELD Score in Liver Disease

UNOS PELD Score in Liver Disease (Patients less than 18 years old)

Urea Reduction Percentage in Hemodialysis (PRU)

Urea Reduction Ratio in Hemodialysis (URR)

  V

Ventilation Index

Very Low Density Lipoprotein (VLDL)

Vital Capacity

Volume Unit Conversions

Volume of Distribution of Urea

  W

Water Deficit in Hypernatremia

Weight Unit Conversions

Winter's Formula for Expected PCO2

 

Hand-Held System Info at MedCalc 3000 Complete Edition


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