Emergency medicine

Emergency medicine is the medical specialty focused on evaluating and treating acute illnesses and injuries that require immediate care. It provides rapid stabilization, diagnosis, and decisions about further treatment or disposition.

Emergency department: A hospital unit that evaluates and treats patients with urgent or life-threatening conditions. The specialty’s work is organized around rapid assessment and treatment in this setting.
Acute care: Medical care for conditions that develop suddenly or worsen over a short period. Emergency medicine is a specialty within this broader form of care.
Trauma surgery: Surgical care for injuries, especially those causing severe or multiple forms of bodily damage. Emergency clinicians identify injuries and stabilize patients before and alongside definitive surgery.
Critical care medicine: The specialty that provides sustained, intensive treatment for patients with life-threatening organ dysfunction. Emergency medicine initiates stabilization; critical care often takes over prolonged intensive treatment.
Emergency Medical Treatment and Labor Act: A United States federal law requiring covered hospitals to screen and stabilize emergency medical conditions regardless of ability to pay. It establishes key legal duties for emergency screening and stabilization in the United States.
Triage: The process of sorting patients by urgency to guide the order and level of care. Triage determines who needs immediate attention when arrivals exceed available resources.
Clinical decision-making: The process of selecting diagnostic and treatment actions using patient information and medical knowledge. Emergency decisions often precede complete information and must account for serious possibilities.
Stroke: Brain injury caused by interrupted blood flow or bleeding within the brain. Rapid recognition in the emergency department can preserve access to time-sensitive treatment.
Urgent care: Outpatient care for illnesses and injuries needing prompt attention but not usually hospital-level emergency resources. Its narrower acuity and resources distinguish it from emergency department care.
Crowding in emergency departments: A mismatch between emergency department demand and available space, staff, or downstream hospital capacity. Crowding can delay assessment and treatment even when emergency clinicians recognize urgent needs.

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