Akbarzadeh Fariborz, Kazemi Babak, Pourafkari Leili
Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Pacing Clin Electrophysiol. 2010 Mar;33(3):372-6. doi: 10.1111/j.1540-8159.2009.02530.x. Epub 2009 Sep 10.
A 23-year-old woman with obstructive hypertrophic cardiomyopathy and history of frequent unexplained syncope had undergone implantable cardioverter defibrillator implantation. She had experienced frequent inappropriate shocks since implantation due to T-wave oversensing. After one of the syncopal attacks, she was found to have an atrioventricular (AV)-reentrant tachycardia, induced by a high-voltage shock, with rapid degeneration to atrial fibrillation and then ventricular fibrillation. The AV-reentrant tachycardia was believed to be the cause of both syncopal attacks and inappropriate shocks. The patient has been asymptomatic after ablation of the accessory pathway. To the best of our knowledge, this is the first report of induction of an AV-reentrant tachycardia by a high-voltage implantable cardioverter defibrillator shock.
一名23岁患有梗阻性肥厚型心肌病且有频繁不明原因晕厥病史的女性接受了植入式心脏复律除颤器植入术。自植入后，由于T波感知过度，她频繁经历不适当电击。在一次晕厥发作后，发现她患有房室（AV）折返性心动过速，由高压电击诱发，迅速恶化为心房颤动，然后是心室颤动。AV折返性心动过速被认为是晕厥发作和不适当电击的原因。在消融旁路后，患者一直无症状。据我们所知，这是首例关于高压植入式心脏复律除颤器电击诱发AV折返性心动过速的报告。
