ECG Weekly

Weekly Workout · #590 · April 20, 2026

UMEM Cases, Part 4: When the Computer Misses the Rhythm and Flutter Fakes a STEMI

HPI

A 44-year-old man with severe cardiomyopathy, an LVAD, chronic amiodarone therapy, and an AICD presents with palpitations. His ECG shows a regular wide-complex tachycardia, but the rate is only 135. There also appears to be retrograde atrial activity after the QRS complexes, and the device is not firing. At first glance, those details may seem reassuring. They should not be.

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