Emergency Medicine: Structured Resuscitation Under Time Pressure
Priority concepts
The exam expects a disciplined approach: primary survey (airway, breathing, circulation, disability, exposure), then resuscitation, then secondary survey. Know the reversible causes of cardiac arrest, the sepsis bundle elements, time-critical stroke assessment, toxidromes, and anaphylaxis management. Learn life-threatening causes by pattern - the patient with chest pain and shock needs bedside echocardiography and consideration of tamponade, tension pneumothorax, or massive pulmonary embolism.
Stroke requires a last-known-well time, glucose, and urgent imaging; thrombolysis and thrombectomy decisions depend on elapsed time and imaging findings, not on how the patient looks.
Traps
Sequence questions are the commonest source of lost marks. In anaphylaxis, adrenaline comes before antihistamines and steroids. In a tension pneumothorax, decompress before imaging. In sepsis, cultures and antibiotics come before fluids in some frameworks but all must happen within the first hour. Beware the patient described as 'stable' who has quietly abnormal physiology - a normal blood pressure does not exclude shock in a young adult.
Worked example
A patient develops stridor, urticaria, and hypotension minutes after a drug infusion. Give intramuscular adrenaline 0.5 mg of 1 mg/mL solution into the anterolateral thigh, repeat every 5 minutes as needed, remove the trigger, position supine with legs raised, give high-flow oxygen and intravenous fluid, then consider adjuncts. Intramuscular, not subcutaneous, is the route.
Rule of thumb
Treat the greatest threat first and reassess after every intervention. If you cannot explain a deteriorating patient with a single diagnosis, keep looking while you resuscitate - the answer is usually airway, breathing, or bleeding.