Iijima Kenichi, Chinushi Masaomi, Hasegawa Kanae, Izumi Daisuke, Hosaka Yukio, Furushima Hiroshi, Aizawa Yoshifusa
The First Department of Internal Medicine, Niigata University School of Medicine, Japan.
Intern Med. 2011;50(9):1021-4. doi: 10.2169/internalmedicine.50.4837. Epub 2011 May 1.
Inappropriate inhibition of atrial pacing due to T-wave oversensing (TWOS) was observed in a patient presenting with congenital long QT syndrome, treated with an implantable cardioverter defibrillator (ICD) and beta-adrenergic blocker. Development of TWOS was associated with further QT interval prolongation in the absence of amplitude changes in the intracardiac T and R waves. Replacement of the ICD generator with a sensing filter designed to attenuate the intracardiac T wave suppressed TWOS and normalized the pacing functions.
在一名患有先天性长QT综合征的患者中观察到，由于T波过度感知（TWOS）导致心房起搏不适当抑制，该患者接受了植入式心脏复律除颤器（ICD）和β-肾上腺素能阻滞剂治疗。TWOS的发生与心内T波和R波幅度无变化时QT间期进一步延长有关。用旨在衰减心内T波的传感滤波器更换ICD发生器可抑制TWOS并使起搏功能正常化。
