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4Ts Score for Heparin-Induced Thrombocytopenia
HIT vs other causes of thrombocytopenia.
Open calculatorA-a O₂ Gradient
Shunting and V/Q Mismatch.
Open calculatorABC Score for Massive Transfusion
Need for massive transfusion; calculated before labs.
Open calculatorABCD² Score for TIA
Stroke risk after TIA: inpt vs outpt.
Open calculatorAPACHE II Score
Estimates ICU mortality.
Open calculatorAPGAR Score
Assesses neonates 1 and 5 mins postpartum.
Open calculatorATRIA Bleeding Risk Score
Bleeding risk from warfarin.
Open calculatorAUDIT-C for Alcohol Use
Screens for at-risk drinkers, not necessarily dependence.
Open calculatorAbsolute Neutrophil Count (ANC)
Neutropenia (after chemotherapy).
Open calculatorAcetaminophen Overdose and NAC Dosing
NAC Dosing for acetaminophen OD.
Open calculatorAdult Self-Report Scale (ASRS v1.1) for ADHD
Diagnoses adult ADHD.
Open calculatorAlvarado Score for Acute Appendicitis
Appendicitis diagnosis.
Open calculatorBISAP Score for Pancreatitis Mortality
<p>Mortality in pancreatitis.</p>
Open calculatorBMI Calculator (Body Mass Index and BSA)
Categorizes obesity, assists some med dosing.
Open calculatorBicarbonate Deficit
<p>Calculates total body bicarb deficit.</p>
Open calculatorCAGE Questions for Alcohol Use
Screens for excessive drinking and alcoholism.
Open calculatorCHADS₂ Score for Atrial Fibrillation Stroke Risk
Stroke risk in AFib.
Open calculatorCHA₂DS₂-VA Score for Atrial Fibrillation Stroke Risk
Stroke risk in atrial fibrillation patients.
Open calculatorCHA₂DS₂-VASc Score for Atrial Fibrillation Stroke Risk
Stroke risk in afib; better than CHADS₂.
Open calculatorCIWA-Ar for Alcohol Withdrawal
Objectifies alcohol withdrawal severity.
Open calculatorCOWS Score for Opiate Withdrawal
Severity of opiate withdrawal.
Open calculatorCRUSADE Score for Post-MI Bleeding Risk
Bleeding risk after NSTEMI.
Open calculatorCURB-65 Score for Pneumonia Severity
Mortality in CAP: inpatient vs outpatient.
Open calculatorCalcium Correction for Hypoalbuminemia and Hyperalbuminemia
Corrects Ca for hypoalbuminemia or hyperalbuminemia.
Open calculatorCanadian C-Spine Rule
More sens/spec, but more complex, than NEXUS.
Open calculatorCanadian CT Head Injury/Trauma Rule
Very sensitive, rules out imaging in many.
Open calculatorCentor Score (Modified/McIsaac) for Strep Pharyngitis
Strep throat diagnosis and treatment.
Open calculatorCorrected QT Interval (QTc)
Corrects QT interval.
Open calculatorCorrected Reticulocyte Percentage/Reticulocyte Production Index (RPI)
Adequacy of marrow response to anemia.
Open calculatorCreatinine Clearance (Cockcroft-Gault Equation)
Estimates creatinine clearance (kidney function).
Open calculatorDuke Criteria for Infective Endocarditis
Diagnose endocarditis.
Open calculatorEstimated Average Glucose (eAG) From HbA1C
Estimates avg gluc from HbA1C.
Open calculatorFractional Excretion of Sodium (FENa)
Prerenal or intrinsic kidney failure.
Open calculatorFractional Excretion of Urea (FEUrea)
<p>Similar to FENa; for pts on diuretics.</p>
Open calculatorFramingham Risk Score for Hard Coronary Heart Disease
<p>Heart attack risk.</p>
Open calculatorFree Water Deficit in Hypernatremia
Free water deficit in hypernatremia or dehydration.
Open calculatorGAD-7 (General Anxiety Disorder-7)
Severity of anxiety.
Open calculatorGeneva Score (Revised) for Pulmonary Embolism
Risk of PE.
Open calculatorGlasgow Coma Scale (GCS)
Objective level of consciousness.
Open calculatorHAS-BLED Score for Major Bleeding Risk
Bleeding risk with AFib anticoagulation.
Open calculatorHEART Score for Major Cardiac Events
6-week risk of cardiac event.
Open calculatorHEMORR₂HAGES Score for Major Bleeding Risk
Bleeding risk in elderly AF.
Open calculatorHIT Expert Probability (HEP) Score for Heparin-Induced Thrombocytopenia
Likelihood of HIT.
Open calculatorHamilton Anxiety Scale
Trends anxiety over time.
Open calculatorHepatic Encephalopathy Grades/Stages
West Haven Criteria: Severity to guide treatment.
Open calculatorHunt & Hess Classification of Subarachnoid Hemorrhage
Mortality in SAH.
Open calculatorInfant Scalp Score
TBI risk in head-injured infants.
Open calculatorInjury Severity Score (ISS)
Standardizes severity of trauma.
Open calculatorIntracerebral Hemorrhage (ICH) Score
Mortality in ICH.
Open calculatorKocher Criteria for Septic Arthritis
Septic arthritis vs transient synovitis in pediatric inflamed hip.
Open calculatorLDL Calculated
<p>From Total Chol, HDL and Trigs.</p>
Open calculatorLight's Criteria for Exudative Effusions
Pleural effusion: exudative vs transudative.
Open calculatorMDRD GFR Equation
For CKD patients (not for AKI).
Open calculatorMELD Na (UNOS/OPTN)
Liver transplant planning + Na.
Open calculatorMELDNa/MELD-Na Score for Liver Cirrhosis
MELD + Na: More accurate than MELD.
Open calculatorMaintenance Fluids Calculations
Fluid maintenance.
Open calculatorMajor Depression Index (MDI)
Screens for depression.
Open calculatorMean Arterial Pressure (MAP)
Calculates MAP.
Open calculatorModified NIH Stroke Scale/Score (mNIHSS)
Shortened, validated version of the NIHSS.
Open calculatorNIH Stroke Scale/Score (NIHSS)
Quantifies stroke severity.
Open calculatorOpioid Risk Tool (ORT) for Narcotic Abuse
Risk of narcotic abuse/misuse.
Open calculatorOttawa Ankle Rule
Rules out clinically significant foot and ankle fractures.
Open calculatorOttawa Knee Rule
Sensitive; rules out imaging in some.
Open calculatorPERC Rule for Pulmonary Embolism
Clinically rules out PE (<2%).
Open calculatorPHQ-9 (Patient Health Questionnaire-9)
Degree of depression severity.
Open calculatorParkland Formula for Burns
Fluid requirements after burns.
Open calculatorPediatric SIRS, Sepsis, and Septic Shock Criteria
Severity of sepsis and septic shock.
Open calculatorPulmonary Embolism Severity Index (PESI)
Mortality from PE.
Open calculatorRIETE Score for Risk of Hemorrhage in Pulmonary Embolism Treatment
Bleeding risk from PE anticoagulation.
Open calculatorRevised Cardiac Risk Index for Pre-Operative Risk
Risk of major cardiac event from surgery.
Open calculatorSIRS, Sepsis, and Septic Shock Criteria
Defines severity of sepsis and septic shock.
Open calculatorSerum Anion Gap
Evaluates states of metabolic acidosis.
Open calculatorSerum Osmolality/Osmolarity
<p>Screens for toxic alcohols and more.</p>
Open calculatorSgarbossa's Criteria for MI in Left Bundle Branch Block
<p>Diagnoses acute MI in LBBB.</p>
Open calculatorShock Index
Sensitive indicator of occult shock.
Open calculatorSimplified Motor Score (SMS)
Simplified GCS for head trauma.
Open calculatorSimplified PESI (Pulmonary Embolism Severity Index)
Mortality from PE.
Open calculatorSodium Correction Rate in Hyponatremia and Hypernatremia
<p>Recommends hyponatremia/hypernatremia treatment.</p>
Open calculatorSodium Correction for Hyperglycemia
Calculates Na in hyperglycemia.
Open calculatorSodium Deficit in Hyponatremia
Total sodium missing in hyponatremia.
Open calculatorSteroid Conversion Calculator
Steroid dosing equivalencies.
Open calculatorStool Osmolar/Osmotic Gap
Chronic Diarrhea: Osmotic vs Secretory.
Open calculatorTHRIVE Score for Stroke Outcome
Prognosis after stroke; incorporates NIHSS.
Open calculatorTIMI Risk Index
<p>Mortality in ACS.</p>
Open calculatorUrine Anion Gap
Detects urine acidosis for metabolic acidosis eval.
Open calculatorWells' Criteria for DVT
Risk of DVT based on clinical criteria.
Open calculatorWells' Criteria for Pulmonary Embolism
Risk of PE.
Open calculatorWestley Croup Score
Croup severity.
Open calculatorWinters' Formula for Metabolic Acidosis Compensation
Expected pCO₂ if pure metabolic acidosis.
Open calculatortPA Contraindications for Ischemic Stroke
Inclusion and exclusion criteria for tPA.
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