Introduction   Units & Dose Converters   Math Calculator   Medical Equations Clinical Criteria Decision Trees   Specialty Index Search MedCalc 3000   EMR Edition Pocket PC Edition Mobile Edition   Purchase Subscription Lower Price!   Institutional Licensing Forgotten Passwords   Submit New Formula/Feedback

Water Deficit in Hypernatremia   WDef = (Sex * NormalWgt) * (SerumNa - DesiredNa) / DesiredNa   Input:   Sex Male (0.6) Female (0.5) Desired Na   mEq/L Normal Wgt   gm kg lb mg Serum Na   mEq/L Result:   WDef   L fL mL   Decimal Precision: 0 1 2 3           Notes The term Sex * Normal Wgt represents the normal total body water (TBW). Normal TBW is gender specific as seen in the 0.6 and 0.5 factors above.   Equation parameters such as Sex have two or more discrete values that may be used in the calculation. The numbers in the parentheses, e.g. (0.6), represent the values that will be used.     Related Results            Pull down to select a related equation and transfer values in common Aminoglycoside Clearance Estimate     [ Sex ] Carboplatin AUC Dose Calculation (Calvert formula)     [ Sex ] Creatinine Clearance Estimate by Cockcroft-Gault Equation (SI units)     [ Sex ] Creatinine Clearance Estimate by Cockcroft-Gault Equation     [ Sex ] Creatinine Clearance Estimate by Jelliffe Formula     [ Sex ] Diabetes Risk Score (Type 2)     [ Sex ] Fractional Excretion of Sodium (SI units)     [ Serum_Na ] Fractional Excretion of Sodium     [ Serum_Na ] Glomerular Filtration Rate Estimate by Quadratic Equation     [ Sex ] Glomerular Filtration Rate Estimate by the Abbreviated MDRD Study Equation (SI units)     [ Sex ] Glomerular Filtration Rate Estimate by the Abbreviated MDRD Study Equation     [ Sex ] Glomerular Filtration Rate Estimate by the MDRD Equation (SI units)     [ Sex ] Glomerular Filtration Rate Estimate by the MDRD Equation     [ Sex ] Height Potential Prediction by Mid-parental Height     [ Sex ] Hepatitis C Cirrhosis Probability     [ Sex ] Hyponatremia Correction Infusate Rate     [ Serum_Na ] Ideal Body Weight Percentage     [ Sex ] Ideal Body Weight     [ Sex ] Infant Head Circumference for Age Percentiles (< 36 months)     [ Sex ] Infant Length for Age Percentiles (< 36 months)     [ Sex ] Infant Weight for Age Percentiles (< 36 months)     [ Sex ] Infant Weight for Length Percentiles (< 36 months)     [ Sex ] Lung Cancer One Year Risk Estimation (for smokers 50-75 years old)     [ Sex ] MELDNa Score for End-Stage Liver Disease (NOT appropriate for patients under the age of 12)     [ Serum_Na ] Osmolal Gap Calculator (SI units)     [ Serum_Na ] Osmolal Gap Calculator     [ Serum_Na ] PELD Score for End-Stage Liver Disease (patients less than 12 years old)     [ Sex ] Pneumonia Mortality in Nursing Home Patients by Logistic Regression     [ Sex ] Pulmonary Embolism Risk by Pisa Study (with chest x-ray)     [ Sex ] Pulmonary Embolism Risk by Pisa Study (without chest x-ray)     [ Sex ] Renal Artery Stenosis Prediction Rule     [ Sex ] Serum Sodium Concentration Change Considering Infused and Excreted Cations     [ Sex ] Sodium Deficit in Hyponatremia     [ Sex, Desired_Na, Normal_Wgt, Serum_Na ] Stroke Risk in Diabetes Type 2 UKPDS 60     [ Sex ] Total Body Water (BIA formula)     [ Sex ]         Legal Notices and Disclaimer   All information contained in and produced by the MedCalc 3000 system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.   MedCalc 3000 is Copyright © 1998-2010 Foundation Internet Services, LLC    [Build 240921 v9.1]