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Course: Wide Complex QRS During Sotalol Administration

CME Credits: 1.00

Released: 2022-01-26

A man in his 40s was seen in clinic for a long history of palpitations. He had a history of cardiac arrest after receiving adenosine for sustained supraventricular tachycardia and tachycardia-induced cardiomyopathy. The patient was also noted to have episodes of atrial flutter. Transthoracic echocardiogram displayed a left ventricular ejection fraction of 63% and mild aortic and mitral regurgitation. Cardiac magnetic resonance imaging in sinus rhythm showed mild left ventricle thickening (up to 14 mm) and was otherwise normal. The patient was hospitalized for initiation of sotalol, given that he experienced frequent episodes of atrial arrhythmia. A shows sinus rhythm prior to sotalol initiation. B shows telemetry during administration of sotalol.


Educational Objective
Based on this clinical scenario and the accompanying image, understand how to arrive at a correct diagnosis.


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