Arab Board EM Final Written Practice Questions - Arab Board Emergency Medicine Final Written Examination Exam

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A 48-year-old marathon runner collapses with sudden cardiac arrest during a road race. Bystander CPR is initiated within 1 minute, and the first arriving EMS team documents ventricular fibrillation. After 25 minutes of high-quality ACLS in the field with ongoing refractory VF, the team considers extracorporeal cardiopulmonary resuscitation (E-CPR). Which set of clinical characteristics represents ideal candidate criteria for emergency veno-arterial ECMO cannulation?

Witnessed arrest, immediate bystander CPR, initial shockable rhythm, age under 65, and estimated cannulation within 60 minutes of collapse Unwitnessed arrest, unknown downtime, initial asystole, and severe end-stage renal disease Witnessed arrest with severe pre-existing severe dementia and metastatic lung cancer Arrest duration exceeding 90 minutes with severe fixed dilated pupils and core temperature 38°C

Correct Answer:

Witnessed arrest, immediate bystander CPR, initial shockable rhythm, age under 65, and estimated cannulation within 60 minutes of collapse

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