Course: Acute Myocardial Infarction Revealed by an Escape Rhythm in a Patient With Failed Sgarbossa Criteria
CME Credits: 1.00
Released: 2023-11-13
A man in his 80s with a medical history of essential hypertension presented to the emergency department with sudden onset epigastric pain. The initial electrocardiogram (ECG) showed sinus rhythm, left bundle branch block (LBBB) with secondary repolarization changes (, A). One hour after presentation, the patient developed polymorphic ventricular tachycardia with return of spontaneous circulation after 2 rounds of cardiopulmonary resuscitation. A second ECG obtained after cardiac arrest showed an escape rhythm with incomplete right bundle branch block (iRBBB) morphology and ischemic changes (, B). The troponin I levels were 0.14 ng/mL (normal, <.02 ng/mL [to convert to micrograms per liter, multiply by 1.0]). The patient was intubated and transported for cardiac catheterization.
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