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17 calculators
Acute care and emergency medicine calculators for rapid clinical decision-making at the point of care. This category covers trauma scoring (Revised Trauma Score, Pediatric Trauma Score), sepsis and critical illness screening (qSOFA, SIRS, SOFA), pneumonia severity assessment (CURB-65, CRB-65, PSI/PORT), syncope and chest pain evaluation (HEART Score, Ottawa SAH Rule), and injury-specific rules (Alvarado Score for appendicitis, PERC for PE exclusion, Wells scores for DVT/PE). It also includes the NEWS2 early warning system, Glasgow Coma Scale, Rumack-Matthew nomogram for acetaminophen overdose, and the Parkland formula for burn resuscitation. These tools are designed for time-pressured environments and are most valid when applied to the populations in which they were derived.
Every tool in this domain is linked below, each with its own formula, inputs, and interpretation notes. Starting from the clinical area instead of the subject? The same calculators are grouped on the specialties pages, the full alphabetical list collects everything in one place, and the comparison tool lines up three tools side by side.
CURB-65 severity score for community-acquired pneumonia.
Emergency MedicineGlasgow Coma Scale.
Emergency MedicineCalculates Shock Index from heart rate and systolic blood pressure.
Emergency MedicineNational Early Warning Score 2 (NEWS2).
Emergency MedicineQuick Sequential Organ Failure Assessment (qSOFA) for identifying patients at high risk of poor outcomes from suspected infection.
Emergency MedicinePulmonary Embolism Rule-Out Criteria (PERC) for identifying patients in whom PE can be safely ruled out without further testing when clinical pre-test probability is low.
Emergency MedicineWells criteria for pulmonary embolism — pre-test clinical probability of PE to guide D-dimer testing and imaging.
Emergency MedicineWells criteria for deep vein thrombosis — pre-test clinical probability of DVT to guide D-dimer testing and compression ultrasound.
Emergency MedicineHEART score for risk stratification of undifferentiated chest pain in the emergency department, predicting 6-week risk of major adverse cardiac events (MACE).
Emergency MedicineSequential Organ Failure Assessment (SOFA) score quantifying six organ systems (respiratory, coagulation, liver, cardiovascular, neurologic, renal) in critically ill patients.
Critical CareSystemic Inflammatory Response Syndrome (SIRS) criteria — the presence of two or more criteria (temperature, heart rate, respiratory rate, white blood cell count) indicates SIRS.
Emergency MedicineCRB-65 severity score for community-acquired pneumonia risk stratification, usable without laboratory testing (Confusion, Respiratory rate, Blood pressure, age 65+).
Emergency MedicinePneumonia Severity Index (PSI / PORT score) for 30-day mortality risk stratification in community-acquired pneumonia to guide site-of-care decisions.
Emergency MedicineRevised Trauma Score (RTS) using coded Glasgow Coma Scale, systolic blood pressure, and respiratory rate to triage trauma patients and predict survival.
Emergency MedicineParkland (Baxter) formula for initial crystalloid resuscitation of adults with thermal burns: 4 mL/kg/%TBSA over 24 hours, with half in the first 8 hours and half over the following 16 hours.
Emergency MedicineRisk-stratifies patients with suspected acute appendicitis using the Alvarado (MANTRELS) scoring system. Assists in clinical decision-making regarding imaging, observation, and surgical consultation.
Emergency MedicineDetermines whether N-acetylcysteine (NAC) treatment is indicated following a single acute acetaminophen (paracetamol) ingestion, based on the serum acetaminophen concentration and time since ingestion.
Emergency Medicine