RN Tools

RN Tools

879 Calculators

57 Specialties

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Search validated clinical calculators, scores, and decision tools across every specialty.

879 calculators

2

2010 ACR/EULAR Classification Criteria for Rheumatoid Arthritis (RA)

Classification criteria for rheumatoid arthritis (RA) by ACR/EULAR.

Hospitalist Medicine
Internal Medicine

+2

2

2012 ACR/EULAR Classification Criteria for Polymyalgia Rheumatica (PMR)

Classifies polymyalgia rheumatica by expert consensus recommendations.

Family Practice
Hospitalist Medicine

+5

2

2015 ACR/EULAR Classification Criteria for Gout

Classification criteria for gout by ACR/EULAR.

Emergency Medicine
Family Practice

+4

2

2016 ACR/EULAR Classification Criteria for Primary Sjögren’s Syndrome

Classification criteria for primary Sjögren’s disease by ACR/EULAR.

Allergy and Immunology
Dermatology

+8

2

2018 Leibovich Model for Renal Cell Carcinoma (RCC)

Predicts progression-free and cancer-specific survival in patients with renal cell carcinoma (RCC).

Hematology and Oncology
Nephrology

+1

2

2023 Duke-International Society for Cardiovascular Infectious Diseases (ISCVID) Criteria

Diagnostic criteria for infective endocarditis.

Cardiology
Critical Care

+7

2

2023 Emergency Medicine Coding Guide

Rates level of service required in emergency medicine.

Emergency Medicine
2

2HELPS2B Score

Estimates seizure risk in acutely ill patients undergoing continuous EEG (cEEG).

Critical Care
Critical Care (Neurologic)

+4

4

4 A’s Test for Delirium Screening

Diagnoses delirium in older patients.

Family Practice
Geriatrics

+1

4

4-Level Pulmonary Embolism Clinical Probability Score (4PEPS)

Rules out PE based on clinical criteria.

Cardiology
Critical Care

+6

4

4C Mortality Score for COVID-19

Predicts in-hospital mortality in patients admitted with COVID-19.

Critical Care
Emergency Medicine

+4

4

4Ts Score for Heparin-Induced Thrombocytopenia

Stratifies patients by their probability of having HIT as the cause of thrombocytopenia.

Critical Care
Emergency Medicine

+2

6

6 Minute Walk Distance

Calculates reference values for distance walked, as a measure of functional status.

Cardiology
Family Practice

+7

A

A-a O₂ Gradient

Assesses for degree of shunting and V/Q mismatch.

Critical Care
Emergency Medicine

+6

A

AAP Pediatric Hypertension Guidelines

Diagnoses hypertension in pediatric patients; official guideline of the American Academy of Pediatrics.

Cardiology
Family Practice

+3

A

Abbey Pain Scale for Dementia Patients

Assesses pain in patients with advanced dementia.

Anesthesiology
Critical Care

+6

A

Abbreviated Injury Score (AIS) for Inhalation Injury

Classifies inhalation injury severity based on bronchoscopic findings.

Critical Care
Emergency Medicine

+3

A

Abbreviated Mental Test (AMT-10)

Assesses mental impairment in elderly patients.

Geriatrics
Psychiatry

+4

A

Abbreviated Mental Test 4 (AMT-4)

Assesses mental impairment in elderly patients.

Family Practice
Geriatrics

+4

A

ABC Score for Massive Transfusion

Predicts need for massive transfusion in trauma patients.

Critical Care
Emergency Medicine

+4

A

ABC/2 Formula for Intracerebral Hemorrhage Volume

Predicts volume of intracranial hemorrhage from CT measurements.

Critical Care
Critical Care (Neurologic)

+3

A

ABCD² Score for TIA

Estimates the risk of stroke after a suspected transient ischemic attack (TIA).

Critical Care
Emergency Medicine

+5

A

ABIC Score for Alcoholic Hepatitis

Predicts survival in alcoholic hepatitis.

Hepatology
Toxicology

+1

A

Abnormal Involuntary Movement Scale (AIMS)

Measures involuntary movements of tardive dyskinesia (TD).

Neurology
Psychiatry
A

Absolute Lymphocyte Count (ALC)

Assesses number of lymphocytes and predicts CD4 count.

Critical Care
Emergency Medicine

+5

A

Absolute Neutrophil Count (ANC)

Frequently used to assess neutropenic fever in chemotherapy patients.

Critical Care
Emergency Medicine

+5

A

Abuse Assessment Screen (AAS)

Detects domestic abuse (intimate partner violence) in pregnant and nonpregnant women in healthcare settings.

Critical Care
Emergency Medicine

+5

A

Academic Research Consortium for High Bleeding Risk (ARC-HBR) Criteria

Identifies patients undergoing percutaneous coronary intervention who are at high risk of major bleeding or intracranial hemorrhage.

Cardiology
Critical Care

+6

A

ACC/AHA Heart Failure Staging

Describes stages of heart failure and provides recommendations for therapy by stage.

Cardiology
A

ACEF II Risk Score for Cardiac Surgery

Predicts 30-day mortality after elective or emergency cardiac surgery.

Cardiology
Critical Care

+6