Syncope with ST-segment abnormalities resembling Brugada syndrome due to reversible myocardial ischemia.
This report describes a case of syncope with an initial ECG that showed ST-segment elevation in the right precordial leads suggestive of Brugada syndrome. Procainamide infusion induced a significant increase in the ST-segment abnormalities, further increasing the suspicion for this syndrome. Cardiac catheterization showed lesions in the proximal left anterior descending artery and distal right coronary artery. Following percutaneous coronary intervention at these sites, the ST-segment abnormalities resolved and a repeat procainamide challenge was negative. Electrophysiological study did not provoke any ventricular arrhythmias. Silent myocardial ischemia may result in ECG changes that resemble those seen in patients with Brugada syndrome.
D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006331:Heart Diseases / Q000175:diagnosis; D006801:Humans; D008297:Male; D017202:Myocardial Ischemia / Q000150:complications*; D013575:Syncope / Q000209:etiology*; D013577:Syndrome