Rules out SAH in patients with headache.

Rules out need for head CT in minor head trauma.

Clinically clears cervical spine fracture without imaging in alert, stable trauma patients.

The CIWA-Ar objectifies severity of alcohol withdrawal.

Predicts likelihood that biochemical thyrotoxicosis is thyroid storm.

Defines the severity of sepsis and septic shock.

Screens for suicidal ideation and behavior.

The CIWA-Ar objectifies severity of alcohol withdrawal.

Objectifies severity of opiate withdrawal.

Quantifies severity of alcohol withdrawal.

Estimates probability that pharyngitis is streptococcal and suggests management course.

Estimates mortality of community-acquired pneumonia to help determine inpatient vs. outpatient treatment.

Estimates mortality for adult patients with community-acquired pneumonia.

Objectifies risk of pulmonary embolism.

Rules out PE if no criteria are present and pre-test probability is ≤15%.

Predicts 30-day outcome of patients with pulmonary embolism.

Predicts 6-week risk of major adverse cardiac events in patients with chest pain.

Identifies chest pain patients with low risk of major adverse cardiac event.

Calculates risk of DVT based on clinical criteria.

Rules out PE if no criteria are present and pre-test probability is ≤15%.

Diagnostic criteria for endocarditis.

Doses local anesthetics to help avoid toxic doses.

Calculates risk of DVT based on clinical criteria.

Screens for necrotizing soft tissue infection.

Distinguishes septic arthritis from transient synovitis in a child with an inflamed hip.

Describes criteria for knee trauma patients so low risk as not to warrant knee imaging.

Defines when knee x-rays are unnecessary, based on the Pittsburgh rules.

Rules out clinically significant foot and ankle fractures to reduce use of x-ray imaging.

Rules out clinically significant foot and ankle fractures to reduce use of x-ray imaging.

Defines the severity of sepsis and septic shock.

Identifies high-risk patients for in-hospital mortality with suspected infection outside the ICU.

Estimates probability that pharyngitis is streptococcal, and suggests management course.

Predicts likelihood that biochemical thyrotoxicosis is thyroid storm.

Frequently used to assess neutropenic fever in chemotherapy patients.

Screens for necrotizing soft tissue infection.

Diagnostic criteria for endocarditis.

Predicts 30-day serious adverse events in patients presenting with syncope.