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. Figure 1A shows sinus rhythm prior to sotalol initiation. Figure 1B shows telemetry during administration of sotalol.
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CME Disclosure Statement: Unless noted, all individuals in control of content reported no relevant financial relationships. If applicable, all relevant financial relationships have been mitigated.
Corresponding Author: Albert J. Rogers, MD, MBA, Department of Medicine, Stanford University, 780 Welch Rd, MC 5773, Stanford, CA 94305 (firstname.lastname@example.org).
Published Online: January 26, 2022. doi:10.1001/jamacardio.2021.5788
Conflict of Interest Disclosures: None reported.
Additional Contributions: We thank the patient for granting permission to publish this information.
Credit Designation Statement: The American Medical Association designates this Journal-based CME activity activity for a maximum of 1.00 AMA PRA Category 1 Credit(s)™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
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