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Medical Calculators – Internal Medicine

medical calculators

Select a Medical Calculator category below

Cardiology heart Compounding (Alligation,Osmolarity) CONVERTERS, Conversions calculator Critical Care- Medical Formulas lungs Dermatology Disease Calculators (ATP IV, etc) Drip Rate calculators Drug Comparisons (ACE-inh,Statins) Drug Dosage / Substance Levels ELECTROLYTES and Fluids ENDOCRINE (Diabetes, thyroid, …) FINANCIAL-retirement, mortgage finance Gastroenterology & Hepatology Geriatrics Hematology Home entertainment (TV,Speakers…) Infectious Disease bacteria icon Men’s Health Neurology brain Nephrology NUTRITION (TPN, BMR calcs, Fiber) Oncology Ophthalmology Pain Management Pharmacokinetics & CRCL kidney Psychiatry Rheumatology Statistics Urology

Cardiology Calculators top of page

Advanced cardiac life support (PALS) – Pediatric Albumin calculator Alteplase (Activase) CalcArgatroban Nomogram, DTIs, other Arterial Oxygen Content -Oxygenation equationATP-III Adult Treatment Panel CalculatorATP IV -ACC/AHA Latest cholesterol GuidelinesATP-IV 10 year ASCVD risk -Pooled CohortledBody Fluid VolumesCHADS2 Score: Stroke Risk in AFibCHADS2-VASc Score: Stroke Risk in A. Fib.Digoxin Dosing Calc Digoxin- Steady state adjust Framingham 10 Year Risk Calculator
Bleeding Risk

HAS-BLED bleeding risk score HEMORR2HAGES Bleeding Risk Score
Heparin

Heparin Dosing- Affinity Health System Heparin Dosing Calculator -Detroit VAMC Heparin Dosing Calc -custom options available

ICU Drug Calculator – common therapeutic agents INRs – ELEVATED (warfarin)JNC 8 Guidelines calculator / Tool Mean Arterial Pressure – MAPPooled Cohort equation -ASCVD riskPhytosterol Calculator – Cholesterolnew icon Target heart rate calc TIMI Risk Score ST-Elevation MI (STEMI). TIMI Risk Score for Unstable Angina / NSTEMI.
Warfarin

Warfarin Dosing Calc – Multiple nomogramsWarfarin Dose Estimation Calc Warfarin maintenance Dose consult tool hot Warfarin Inpt Nomogram and Dose Estimation————- Wells Clinical Prediction Rule (DVT) Wells Clinical Prediction Rule for (PE)

Compounding: top of page

Alligation calculator- (Solutions) Compounding Alligation calculator- (Topicals) Compounding Alligation Calculator(double) – useful in pediatrics Drip Rate Table Creator – Single column Drip Rate calc -multiple-columns Epidural recipes / calc
Can 5 grams of MgSO4 be added to 100mL D5W and infused peripherally?

Osmolarity Calc-powerful tool

Conversion Calculators top of page

Benzodiazepine Converter Conventional and S.I. Unit Converter Corticosteroid Converter- anti-inflam. potency English – Metric Conversions HbA1c to Plasma Glucose – eAG Opioid Conversions Calc (original – single agent) Opioid (Pain Mgmt) Converter Advanced hot Temperature Conversions

Critical Care: top of page

Alveolar-arterial Gradient (Aa) Gradient calc Anion Gap calculator – Metabolic acidosis APACHE II-severity-of-disease classification Arterial Oxygen Content -OxygenationBICARBONATE deficit calculator CRCL – Multi-calc hot Multiple clearance values Digoxin Dosing Calc Energy Requirements in ICU pts- Ireton-Jones Ethylene Glycol Toxicity Free Water Deficit Henderson-Hasselbach calc Heparin Dosing ICU Drug Calculator Magnesium Dosing Mean Arterial Pressure (MAP) Phosphate dosing Urinary Indices – Renal failure index / FE-Na

Dermatology Calculatorstop of page

Topical Corticosteroids Potency Selector

Disease Calculators: top of page

ATP-III Adult Treatment Panel Calculator ATP IV -ACC/AHA Latest cholesterol Guidelines ATP-IV 10 year ASCVD risk -Pooled Cohort Child-Turcotte-Pugh Score -chronic liver diseaseIBS review with Rome III & Rome IV calcs new icon Mayo Scoring System MELD Score Ransons Criteria Stool Osmotic Gap

Drip Rate Calculators: top of page

Drip Rate Table Creator – Single column Drip Rate calc -multiple-columns

Drug Comparisons: top of page

Drug Equivalents / Comparsions (home)ACE-Inhibitors Angiotension II Receptor Blockers (ARBs)Benzodiazepine Dose Conversions Beta Blockers HMG – CoA Reductase Inhibitors (Statins)Proton Pump Inhibitors – PPIs

Drug Dosage Calculators / Substance Levels: top of page

Blood Alcohol Calculator (BAC) Digoxin Dosing Calc Dilantin (phenytoin) Dosing Calc Ethylene Glycol Toxicity Therapeutic Drug Levels

Electrolytes: top of page

Anion Gap calculator – Metabolic acidosis Body Fluid Volumes Calcium (hypocalcemia) treatment Calculator Calcium and Vitamin D Calculator Corrected Calcium calculator Free Water Deficit Hypertonic and Normal Saline Calc (original) Hypertonic Saline 3% and 0.9NS Infusion Calc (Custom calculator) Magnesium Dosing Osmolality (serum ) Calculator Osmolarity compounding Calc-powerful tool Phosphate Dosing Serum Na+ Level Prediction – based on 0.9NS Sodium BICARBONATE deficit calculator Sodium level correction for hyperglycemia Urinary Indices – Renal failure index / FE-Na

Endocrinology: top of page

Aging Males’ Symptoms (AMS) scale Androgen Deficiency in the Aging Male (ADAM Score) Diabetic Database HbA1c to Plasma Glucose – eAG Hypothyroid – Levothyroxine Dosing calc Insulin Mixing Tool – compatibility Levothyroxine Dosing calculator Sodium level correction for hyperglycemia

Financial Calculators: hot top of page

FERS – CSRS Retirement Calculator Financial Calculators (home) Investment Calcs Annuities, 401k, Yield Loan Calculators – Simple, Deferment, Leasing Mortgages, Balloon mortgages, Prepayment Saving Calculator, tuition, reaching a million Retirement calculators – 401k , Annuities.

Gastroenterology & Hepatology Calculators: top of page

ABIC score – Stratification of risk of death in alcoholic hepatitis (AH)
Alcoholic Hepatitis Histological Score (AHHS)– Prognostic Stratification of Alcoholic Hepatitis
Child-Turcotte-Pugh Score -chronic liver disease – used to assess the prognosis of chronic liver disease, mainly cirrhosis. Although it was originally used to predict mortality during surgery, it is now used to determine the prognosis, as well as the required strength of treatment and the necessity of liver transplantation.
Crohn’s Disease Activity Index (CDAI)– The CDAI is an important research tool for quantifying symptoms as well as determining the impact of drug therapy on overall symptoms.
Forrest classification – Risk stratification of upper gastrointestinal hemorrhage -UGIB
Glasgow alcoholic hepatitis score (GAHS) predicts survival from alcoholic hepatitis with respect to individual Glasgow alcoholic hepatitis score (GAHS) values
Glasgow-Blatchford bleeding score (GBS)– Screening tool for acute upper gastrointestinal bleeding (UGIB)  
Harvey-Bradshaw Index – useful tool for assessing the degree of illness (activity) in patient’s with Crohn’s disease
Irritable Bowel Syndrome (IBS) treatment options
Lille Model Scoring in Severe Alcoholic Hepatitis – helps to identify patients ‘early’ with severe alcoholic hepatitis that are likely to respond to steroid therapy or who will require alternative treatment options.
Mayo Scoring System for Assessment of Ulcerative Colitis
MELD Score (Model For End-Stage Liver Disease) -useful tool in predicting the probability of death from liver disease and how urgently an individual needs a liver transplant in the next three months.
MELD-Na Score (Model For End-Stage Liver Disease) -United Network for Organ Sharing proposed that MELD-Na score (an extension of MELD) may better rank candidates based on their risk of pre-transplant mortality and is projected to save 50-60 lives total per year.
Modified Maddrey’s discriminant function (mDF) – (Score) is a predictive statistical model useful for evaluating the severity and prognosis in alcoholic hepatitis
Ransons Criteria mortality risk for acute pancreatitis- clinical prediction rule for predicting the prognosis and mortality risk of acute pancreatitis.
Rockall score for the evaluation of upper gastrointestinal bleeding – based on clinical criteria including age, shock and presence of other comorbidities. The scoring system helps evaluate patients at risk of re-bleeding or death following acute upper gastrointestinal bleeding
Rome iii criteria for IBS
Rome IV diagnostic criteria -Irritable Bowel Syndrome
Stool Osmotic Gap– Secretory vs Osmotic diarrhea

Geriatrics: top of page

Activities of daily living (ADL) assessment tool ADAM (Androgen Deficiency in Aging Males) Aging Males’ Symptom (AMS) scale Beers Criteria – New Patient-specific reporting possible Berg Balance Scale – Fall risk/balance assessment Geriatric changes with age Geriatric Depression Scale (GDS) – Short Version Geriatric Depression Scale (GDS) – Long Version International Index of Erectile Function (IIEF) International Prostate Symptom Score (IPSS) Medication Appropriateness Index Calc Overactive Bladder 8-question Screener – (OAB-q) Overactive Bladder Symptom Score (OABSS) SLUMS-Screening for Cognitive Impairment in Older AdultsUrinary Incontinence Treatment /Symptom Calculator

Hematology: top of page

Absolute Neutrophil Count (ANC) Calc Argatroban Nomogram, DTIs, other INRs (elevated) Treatment (phytonadione) Iron Dextran Dosing calculator (iron deficit) Total Iron Deficit – equation appears in Cosmofer PI Total Iron Deficit -Alternative equation Warfarin Dosing Calculator – Multiple nomogramsWarfarin Dose Estimation Calc Warfarin maintenance Dose consult tool Warfarin Inpt Nomogram and Dose Estimation

Home entertainment etc: top of page

Home Theater / Speakers / Widescreen TV Photo Resolution / Camera megapixel new icon

Infectious Disease Calculators: top of page

ADVANCED Pharmacokinetics 2012 ADVANCED Pharmacokinetics 2010 – 2011 Aminoglycosides and Vanco (Original calc) APACHE II-severity-of-disease classification Colistin dosing calc (BETA) Desensitization protocol -12 step Dosing by levels- SINGLE Level – Vancomycin Dosing by levels full versionDosing by levels(quick version) Infectious Disease – Drug of Choice bacteria icon

Men’s Health Calculators top of page

Androgen Deficiency in the Aging Male (ADAM Score)Aging Males’ Symptoms (AMS) scaleInternational Index of Erectile Function (IIEF-5)Sexual Health Inventory for Men (SHIM) score

Neurology Calculators top of page

Benzodiazepine Converter Epidural recipes / calc Infectious Disease – Drug of Choice Phenytoin Dosing Calculator and analysis

Nephrology Calculators top of page

Clearance Equations CKD Epidemiology Collaboration (CKD-EPI) Creatinine Clearance Adult Creatinine Clearance- Pediatric CrCL- Obese Patient (Salazar and Corcoran) Creatinine Clearance – Multi-calc hot CrCL – Unstable Renal Function MULTI-calc CrCL -IDMS-traceable MDRD Study Equation Creatinine Clearance / GFR- Multi-calc A new beta multi-calc was created with specialized handling of patients with a height below 60 inches. It also contains all of the functionality of the standard multi-calculator as well as the calculation of the GFR Creatinine Clearance / GFR- Multi-calc (height adjustment) ————- Gender-Spec Formula Est 24h Urine Protein

NUTRITION Calculators (TPN, Dieting calc, Fiber, etc) top of page

Estimated ‘Calorie’ Calculators

Several of these calculators may be particularly useful for dieters.  Just about every single MAJOR calorie/ energy equation that has been released over the last 90 years is included below.   Each calculator has a customized printout option for easy analysis.  Recommendation: Try each calculator – print out the results –  then compare!

Body Weight Calculators

  • Adjusted Body Weight Calculator and Ideal Body Weight Calculator
  • Body Mass Index Calculator – BMI – Determines if your weight is in proportion to your height based on Federal guidelines released by the National Heart, Lung, and Blood Institute. The BMI is helpful in determining health risks and appropriate interventions.
  • Dieting Calculator – This calculator provides several useful outputs including the calculated ‘Body Mass Index’ or BMI. It will also estimate your ‘Basal Metabolic Rate’ or BMR. Also included is an estimate of your ‘Total Energy Expenditure’ or TEE which indicates the number of calories needed per day to maintain your current weight.

Estimation of the total body fat percentage Lean Body Weight (LBW) Multi-Calc Weight Loss Target Based on Body Fat Percentage Fat Free Mass, Lean Body Weight, Body Fat percent Multi-Calc Fat-Free Mass Index (FFMI) Calculator based on body fat percentage 

Fiber Calculators

Protein

Other Diet and Nutrition Calculators

Oncology Calculators top of page

Absolute Neutrophil Count (ANC) Calc Advanced Opioid (Pain Mgmt) Converter Body Surface Area-BSA Body Surface Area – Multi-calc hot Carboplatin – AUC Calculator hot Carboplatin Calc V.2.0 includes the CKD-EPI equation (2017) NSAID Selection Calculator Prognostic Scoring For MyelofibrosisCancer Opioid Risk Score

Ophthalmology  top of page

Potency of Glaucoma Drops Dry Eye Disease Topical Options Glaucoma BAK-free and PF drops Glaucoma medications dosing, side effects and potency

PAIN Management Calculators and Conversions top of page

Epidural recipes / calc Fentanyl Patch Converter NSAID Selection Calculator new icon Opioid Converter (advanced) Opioid Conversions Calc (original – single agent)

Pharmacokinetics Calculators: top of page

Adjusted body weight (AjBW) and (IBW) calc Aminoglycosides and Vanco (Original calc)

Clearance Equations

CKD Epidemiology Collaboration (CKD-EPI) Creatinine Clearance Adult Creatinine Clearance- Pediatric CrCL- Obese Patient (Salazar and Corcoran) Creatinine Clearance – Multi-calc hot CrCL – Unstable Renal Function MULTI-calc CrCL -IDMS-traceable MDRD Study Equation Creatinine Clearance – Multi-calc 2012 EDITION A new beta multi-calc was created with specialized handling of patients with a height below 60 inches. It also contains all of the functionality of the standard multi-calculator as well as the calculation of the GFR Creatinine Clearance / GFR- Multi-calc (height adjustment) Cytochrome P450 Analysis Tool

Dosing by levels

Dosing by levels (Full) Dosing by levels – pharmacokinetics (quick) Non-Steady State kinetics

Pharmacokinetics

Pharmacokinetics -Multiple Ke (Advanced version) Pharmacokinetics 2010 – 2011 Pharmacokinetic dosing -aminoglycosides/Vanco Original program Vancomycin AUC Dosing Program Vancomycin Advanced AUC Dosing Program

Trough Calculators

Trough drawn early? -Estimation Tool based on entered Kel
——— This new program can be used to determine when to administer the next dose of vancomycin after a supratherapeutic trough is obtained. An estimated elimination rate constant is generated from the creatinine clearance which is then used to determine the timing of the next dose based on the desired target trough concentration.Vancomycin -Timing of next dose based on estimated Ke value
——— Use this program if the vancomcyin level is drawn early and you want to estimate the actual trough just before the next dose to determine if the current regimen is appropriate Vancomycin – Predicted Trough-Level drawn early

Vancomycin – Single-level dosing

Vancomycin SINGLE Level-(dosing by levels) Original calc ledIf you would like to enter the time since the last dose was given, use this version.This new version may be especially useful if the trough was drawn late and thenext dose was delayed. Example: current regimen vanco 1 gram q12h. Trough wasdrawn 12.5 hours after the last dose.Vancomycin single-level – dose infused early or lateThe NewMedicalTerms vancomycin single-level calculator uses the Vd recommended in Bauer’s text: 0.7 L/kg. Use the advanced version if you wish to manipulate this value.Vancomycin single level – Advanced version

Psychiatry Calculators top of page

Benzodiazepine Dose Conversions Blood Alcohol Calculator (BAC) Therapeutic Drug Levels Geriatric Depression Scale (GDS) – Short Version Geriatric Depression Scale (GDS) – Long VersionAntidepressants in Renal insufficiency or Hepatic DiseaseAntidepressant Drug Selection Treatment App

Rheumatology Calculators top of page

NSAID Selection Calculator new icon Rheumatology calculator – DMARD therapy

Statistics Equations top of page

Number needed to treat (NNT) CalculatorOdds Ratio

Urology Score Calculations top of page

  1. International Prostate Symptom Score (IPSS): consists of 8 questions (the original American Urological Association symptom score (AUA-7)) plus one additional quality of life question.
  2. Urinary Incontinence Treatment /Symptom Calculator
  3. Overactive Bladder Symptom Score (OABSS): a reliable, valid and highly responsive tool to fluctuations in overactive bladder symptoms.
  4. International Index of Erectile Function (IIEF) (also known as the SHIM Questionnaire).
  5. Overactive Bladder 8-question Screener – (OAB-q).
  6. ADAM (Androgen Deficiency in Aging Males) questionnaire consists of 10 questions that help determine if a male patient suffers from androgen deficiency.
  7. Aging Males’ Symptom (AMS) scale allows for a more quantitative assessment of testosterone deficiency (TD) compared to the ADAM score.
  8. Gender-Specific: Estimate 24-Hour Urine Protein from Protein to Creatinine Ratio
  9. Urinary Indices
Medical Calculators – Internal Medicine