起搏心电图分析_王景峰.ppt

VIP工作原理 VIP激活方式 在有哪些信誉好的足球投注网站的周期内一旦有哪些信誉好的足球投注网站到1次自身的房室传导(AR/PR)或有哪些信誉好的足球投注网站周期外连续3个房室传导(AR/PR)，AV/PV间期即延长 VIP失活条件 当以延长的AV/PV间期工作时，连续出现的AV/PV次数等于程控的VIP周期数时，延长的AV/PV间期即缩短至原程控值 VIP的激活 VIP的失活 VIP临床益处 提供更加强大的自身传导有哪些信誉好的足球投注网站和工作方式,最大限度在安全的基础上延长AV间期,减少不必要的右室起搏 * CorePace Module 4: Troubleshooting Hysteresis provides the capability to maintain the patient抯 intrinsic heart rhythm as long as possible, while providing back-up pacing if the intrinsic rhythm falls below the hysteresis rate. Because hysteresis exhibits longer intervals between sensed events, it may be perceived as oversensing. * * * * Medtronic, Inc. has developed the MVP (Managed Ventricular Pacing) mode which promotes intrinsic conduction by reducing unnecessary right ventricular pacing. Results on this pacing mode have been reported by Sweeney M, et al. [PACE 2003. Vol. 26;4(Part II):973 Abstract ID #179]. The MVP pacing mode is a dynamic dual chamber pacing mode that is designed to forgo the historical relationship forced to exist between the atrium and the ventricles in all dual-chamber pacing systems: Maintaining a 1:1 relationship between atrial and ventricular events. By monitoring for naturally occurring events such as long PR intervals (first degree heart block) and Wenckebach phenomenon (Mobitz I heart block), this mode manages ventricular pacing through atrial-based timing and no restrictions on the AV interval. The MVP (AAIR?DDDR) mode differs from conventional AAIR mode in that it allows for an occasional dropped beat and provides back-up V-pacing as needed when the patient experiences at least 2 out of 4 beats with loss of AV conduction. Two dropped beats in close proximity (2 out of 4) will cause the device to switch to DDDR operating mode. Complete details on the MVP pacing mode operation will be available from your Medtronic Representative. MVP is not a search feature. It’s a new pacing mode. Saint Jude and Gu