Patients with orthotopic heart transplantation may have a variety of arrhythmias. There are reports of successful radiofrequency catheter ablation of some of them. Two months after orthotopic cardiac transplantation by bicaval anastomosis, a 49-year-old man developed episodes of tachycardia. The patient developed with dyspnoea and hypotension during typical atrioventricular nodal reentrant tachycardia (AVNRT) revealed by electrocardiogram. During programmed atrial stimulation with progressively increasing prematurity, dual auriculoventricular nodal physiology was observed and AVNRT was induced. This tachycardia was successfully eliminated without complications by radiofrequency catheter ablation of the slow pathway. The patient remained asymptomatic at 4-month follow-up.
Methods: Brugada-type ECG in healthy men included in the Quebec Cardiovascular Study was assessed by systematic review of all (4374 men, 46±8 years old) ECGs done between 1974 and 1985. Classification of BS was made according to three different repolarization patterns: Type 1 is characterized by a coved ST-SE ≥2mm followed by a negative T-wave. Type 2 represents a high take-off ST-SE (≥2mm) with a descending ST-SE (remaining ≥1mm above the baseline) followed by a positive T-wave. Type 3 shows a right precordial ST-SE <1mm.
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