(FIT)-Module 1, Workshop 1: Electrocardiographic/Electrophysiologic Correlation-Tomaselli Case 7 Answer

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Video Summary

The observed condition is drug-induced QT prolongation, identified by repetitive polymorphic ventricular tachycardia (VT) and a long-short initiation sequence. The patient's QT interval is prolonged with abnormal ST-T waves, likely due to methadone use, as the interval shortened significantly off methadone. Echocardiogram showed mild left ventricular hypertrophy, while hypokalemia was mild, making other causes less likely. A pre-existing genetic mutation wasn't ruled out, but the significant QT interval change off methadone supports a drug-induced effect, specifically methadone-related QT prolongation and polymorphic VT.

Keywords

drug-induced QT prolongation

polymorphic ventricular tachycardia

methadone

QT interval

left ventricular hypertrophy