Every objective is covered in the tabs above — jump straight to each.
Emergency: any condition perceived by the prudent layperson — or someone acting on their behalf — as requiring immediate medical or surgical evaluation and treatment.
Primary mission: evaluate, manage, and treat patients with unexpected injury and illness.
Hidden skillset: negotiation (patients, families, consultants), creativity (improvising with limited resources), disposition (who stays, who goes, who needs intervention now).
EM is the default safety net of the U.S. healthcare system — EDs are the most visible component of the care patchwork and often the only point of contact with medicine for millions.
EM is practiced across varied settings, with ongoing efforts to expand access to care beyond the hospital ED.
Uninsured: ~45–48 million (2005) → ~33 million (2014, post-ACA). The ED keeps shouldering uninsured care, and visit volume per 100 patients keeps rising.
7 hardest specialties for on-call consults: Plastic Surgery, ENT, Dentistry, Psychiatry, Neurosurgery, Ophthalmology, Orthopedics. Barriers: lack of insurance, specialist reluctance (reimbursement/time/risk), inconsistent real-world availability despite on-call bylaws.
Don't ask "What's most likely wrong?" Ask "What could kill this patient if I miss it?" Think worst-case first.
Other specialties run it serially: History → Exam → Testing → Diagnosis.
The ED runs it in parallel:
Serial vs. parallel: traditional = triage→register→MD→test→treat later. Emergency = assessment, registration, IV, labs, treatment all at once.
Response to empiric treatment can clarify diagnosis. Stabilize first, sort details later — diagnosis isn't always a prerequisite to treatment.
The first questions you ask walking into the room.
| Level | Light | Meaning |
|---|---|---|
| CRITICAL | 🔴 Red | Life-threatening; high probability of death without immediate intervention. |
| EMERGENT | 🟡 Yellow | May worsen rapidly if untreated; needs timely care. |
| NONURGENT | 🟢 Green | Low probability of progression; can safely wait or be managed later. |
Intervene the moment a problem is found — don't wait for the whole picture.
Four key principles: life-threat recognition · stabilization · (worst-first) differential diagnosis · reevaluation.
Focus on symptoms, not diagnoses. Don't lock onto a disease early — hunt red-flag symptoms: chest pain, dyspnea, altered mental status, uncontrolled bleeding, severe pain, syncope.
Key question: "What will kill this patient the fastest if I miss it?"
| Presentation | Likely (benign) | Dangerous (don't miss) |
|---|---|---|
| Chest pain | Reflux, musculoskeletal strain | MI, PE, aortic dissection |
| Headache | Tension, migraine | SAH, meningitis, intracranial bleed |
| Abdominal pain | Gastroenteritis, constipation | Ruptured AAA, ectopic pregnancy, mesenteric ischemia / perforation |
Replace "What's the diagnosis?" with "What are the co-existing diagnoses?"
In the ED a definitive diagnosis isn't always mandatory or possible. EP priorities, in order:
Rule out immediate danger → Stabilize → Relieve symptoms → Ensure safe disposition
Required (not optional): emergent conditions excluded · symptoms treated · disposition arranged. Diagnosis is ideal, not required.
Admit if: emergency condition exists/unresolved, or patient needs inpatient monitoring/treatment.
Discharge if: no emergent condition, patient safe & stable, clear follow-up.
Cases: chest pain + negative workup but no PCP → admit for obs? · elderly fall + normal CT but lives alone → safe? · SI denies plan but family concerned → psych admit?
Know community resources for uninsured/indigent: free/low-cost clinics, prenatal care, HIV/diabetes clinics, public health. Screen for social dangers: domestic violence, elder abuse, child abuse.
Work the case one step at a time. Type your next move and hit Submit — close answers and synonyms count. Stuck? Use Hint, or bail out for the full reasoning.
Click a term, then click its match. Correct pairs clear off the board. Race the clock.
20 questions. Pick an answer — it locks and shows the rationale.
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