Girodo S, Ritter P, Pioger G, Lamaison D, Malherbe O
ELA Médical, Montrouge, France.
Pacing Clin Electrophysiol. 1990 Dec;13(12 Pt 2):2059-64. doi: 10.1111/j.1540-8159.1990.tb06942.x.
Dual chamber pacing may sometimes be directly indicated for carotid sinus hypersensitivity, vasovagal syndrome, and certain cases of sinoatrial block and intermittent atrioventricular (AV) block, although AV conduction is dominantly normal. At times of normal AV conduction, competition between ventricular pacing and spontaneous ventricular depolarization may occur, with its adverse hemodynamic effects on ventricular function and unnecessary drainage of pacemaker battery energy. A new mode of stimulation is described, called automatic DDD mode, which functions in 'pseudo-AAI' mode during normal AV conduction and reverts to classical DDD function during episodes of AV blocks. Furthermore, during pseudo-AAI function, the pacemaker measures certain physiological parameters that serve to automatically program certain parameters used in DDD mode. Preliminary clinical evaluation has shown that this new mode functions satisfactorily.
双腔起搏有时可直接用于治疗颈动脉窦过敏、血管迷走神经综合征以及某些窦房阻滞和间歇性房室（AV）阻滞病例，尽管房室传导大多正常。在房室传导正常时，心室起搏与自发心室去极化之间可能会发生竞争，这会对心室功能产生不良血流动力学影响，并不必要地消耗起搏器电池能量。本文描述了一种新的刺激模式，称为自动DDD模式，它在正常房室传导期间以“伪AAI”模式运行，并在房室阻滞发作期间恢复为经典的DDD功能。此外，在伪AAI功能期间，起搏器会测量某些生理参数，这些参数用于自动设置DDD模式中使用的某些参数。初步临床评估表明，这种新模式运行良好。
