Wolpert C, Jung W, Spehl S, Korte T, Lüderitz B
Department of Medicine-Cardiology, University of Bonn, Germany.
J Interv Card Electrophysiol. 1998 Mar;2(1):53-6. doi: 10.1023/a:1009716907852.
We describe a rare case of an inappropriate defibrillator discharge during a sinus tachycardia with single fast sensed beats fulfilling the ventricular fibrillation rate criterion, activating the "combined count criterion," although the prevalent sinus tachycardia was inside a ventricular tachycardia rate zone, programmed to monitor only mode. The "combined count criterion" is a safety feature that ensures defibrillation therapy in case of a tachyarrhythmia inside the ventricular tachycardia detection zone, that is temporarily crossing the ventricular fibrillation detection rate. This case reports shows that there is a low but unpredictable risk of device therapy even in a zone programmed to monitor only mode. This phenomenon should be considered when a monitor only zone is installed for revelation of slower tachyarrhythmias.
我们描述了一例罕见病例，在窦性心动过速期间出现不适当的除颤器放电，其中单个快速感知搏动满足室颤率标准，激活了“联合计数标准”，尽管占主导的窦性心动过速处于室性心动过速率区内，且设备编程为仅监测模式。“联合计数标准”是一项安全功能，可确保在室性心动过速检测区内出现快速心律失常（即暂时超过室颤检测率）时进行除颤治疗。本病例报告表明，即使在编程为仅监测模式的区域，也存在低但不可预测的设备治疗风险。当安装仅监测区域以发现较慢的快速心律失常时，应考虑这一现象。
