Medical Calculators

Evidence-based medical calculators and clinical scoring tools.

577 calculators · Page 1 of 20

#

4 A’s Test for Delirium Screening
Diagnoses delirium in older patients.
4Ts Score for Heparin-Induced Thrombocytopenia
Differentiates patients with HIT from those with other causes of thrombocytopenia.
6 Minute Walk Distance
Calculates reference values for distance walked, as a measure of functional status.

A

A-a O₂ Gradient
Assesses for degree of shunting and V/Q mismatch.
AAP Pediatric Hypertension Guidelines
Diagnoses hypertension in pediatric patients; official guideline of the American Academy of Pediatrics.
Abbey Pain Scale for Dementia Patients
Assesses pain in patients with advanced dementia.
Abbreviated Injury Score (AIS) for Inhalation Injury
Classifies inhalation injury severity based on bronchoscopic findings.
Abbreviated Mental Test (AMT-10)
Assesses mental impairment in elderly patients.
Abbreviated Mental Test 4 (AMT-4)
Assesses mental impairment in elderly patients.
ABC Score for Massive Transfusion
Predicts need for massive transfusion in trauma patients.
ABC/2 Formula for Intracerebral Hemorrhage Volume
Predicts volume of intracranial hemorrhage from CT measurements.
ABCD² Score for TIA
Estimates the risk of stroke after a suspected transient ischemic attack (TIA).
ABIC Score for Alcoholic Hepatitis
Predicts survival in alcoholic hepatitis.
Absolute Lymphocyte Count (ALC)
Assesses number of lymphocytes and predicts CD4 count.
Absolute Neutrophil Count (ANC)
Frequently used to assess neutropenic fever in chemotherapy patients.
ACC/AHA Heart Failure Staging
Describes stages of heart failure and provides recommendations for therapy by stage.
ACEF II Risk Score for Cardiac Surgery
Predicts 30-day mortality after elective or emergency cardiac surgery.
Acetaminophen Overdose and NAC Dosing
Calculates PO/IV NAC dosing for acetaminophen overdose (and nomogram to determine toxic 4 hour level).
ACR/EULAR 2010 Rheumatoid Arthritis Classification Criteria
Diagnoses rheumatoid arthritis (RA) in patients with undifferentiated inflammatory synovitis.
ACR/EULAR Gout Classification Criteria
Provides formal diagnostic criteria for gout.
ACTION ICU Score for Intensive Care in NSTEMI
Predicts risk of NSTEMI complications requiring ICU care.
Acute Decompensated Heart Failure National Registry (ADHERE) Algorithm
Predicts in-hospital mortality in patients with heart failure (HF).
Acute Gout Diagnosis Rule
Risk stratifies for gout vs non-gout arthritis and helps determine which patients benefit most from joint aspiration.
ADAPT Protocol for Cardiac Event Risk
Assesses chest pain patients at 2 hours for risk of cardiac event.
Additional Nodal Metastasis Nomogram
Predicts likelihood of breast cancer with sentinel lymph node metastasis has also spread to additional lymph nodes.
Adult Self-Report Scale (ASRS v1.1) for ADHD
Diagnoses adult ADHD .
Age-Adjusted D-dimer for Venous Thromboembolism (VTE)
Adjusts D-dimer cutoffs to help rule out VTE in patients ≥50 years old.
Age-Adjusted ESR/CRP for Rheumatoid Arthritis
Calculates age-adjusted ESR and CRP in adult patients with rheumatoid arthritis.
AIMS65 Score for Upper GI Bleeding Mortality
Determines risk of in-hospital mortality from upper GI bleeding.
AKIN Classification for Acute Kidney Injury (AKI)
Classifies severity of acute kidney injury, similar to RIFLE Criteria .