Recurrent Syncope Due to Torsades de Pointes in a 41-Year-Old Woman With an Empty Sella, Anterior Pituitary Insufficiency, and a Long-QT Interval
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A 41-year-old woman was admitted to our emergency room (ER) because of recurrent syncope. ECG monitoring in the ER showed episodes of sustained but self-limiting torsades de pointes ventricular tachycardia (Figure 1). Two more episodes of syncope occurred in the ER. Intravenous magnesium was administered. Echocardiography revealed a severely impaired left ventricular (LV) function (online-only Data Supplement Movie I). The patient was immediately transferred to the cardiac catheterization laboratory for further assessment. Coronary artery disease was excluded by coronary angiography. LV angiography confirmed global hypokinesia (online-only Data Supplement Movie II). The calculated LV ejection fraction was 30%. During the procedure a temporary pacemaker was placed in the right ventricle. Pacing was initiated at a rate of 80 bpm, and the patient was transferred to the coronary care unit. No more episodes …