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首页> 外文期刊>PACE: Pacing and clinical electrophysiology >Which is the optimal testing method for identifying an AV delay that allows intrinsic conduction?
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Which is the optimal testing method for identifying an AV delay that allows intrinsic conduction?

机译：这是用于识别允许固有传导的AV延迟的最佳测试方法？

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It is desirable to maintain normal, conducted ventricular activation in patients with dual-chamber pacemakers and preserved atrioventricular (AV) conduction. The shortest AV delay resulting in consistent ventricular inhibition (avoiding ventricular pseudofusion) was determined by a conventional incremental (inside-out) technique vs the alternate decremental (outside-in) technique in 20 such patients. Determinations were made in VDD mode in 20 patients and DDD mode (approximately 10 beats/min faster than the intrinsic rate) in 19. In VDD mode, the shortest AV delay avoiding ventricular pseudofusion was never found during inside-out testing. It was identical with both methods in 10 patients (50%), and shorter by 10-80 ms (mean 20 +/- 20 ms) with the outside-in method in the remaining 10 (P = 0.004). In DDD mode, the shortest AV delay resulting in consistent ventricular inhibition was found only once during inside-out testing. It was the same with both methods in 13 patients (68%), and shorter by 10-20 ms (mean 14 +/- 5 ms) with the outside-in method in the remaining 5 (26%, P = 0.18; Fisher's exact test). The shortest sensed AV delay preventing ventricular pseudofusion is most likely to be found with a decremental method (outside-in). In rare patients, it identifies AV delays resulting in inhibition, while ventricular pacing persists at longer programmable AV delays with the conventional inside-out approach.
机译：希望在双室起搏器患者中维持正常，进行心室活化，并保存房室（AV）传导。通过传统的增量（内外）技术在20件患者中的替代衰减（外载）技术Vs替代衰减（外载）技术，确定导致一致的心室抑制（避免心室假血管）的最短AV延迟。在20名患者和DDD模式下以VDD模式进行测定（大约10次/分钟比本质速率快）19。在VDD模式下，在内外测试期间从未发现过度的AV延迟避免避免心室假枢化。它与10名患者（50％）中的两种方法相同，并且在剩余的10（P = 0.004）中，在10-80ms（平均20 +/-20ms）中缩短10-80ms（平均20 +/-20 ms）（p = 0.004）。在DDD模式下，在内外检测期间仅发现一致的心室抑制产生一致的心室抑制的最短AV延迟。与13名患者（68％）的方法相同，并且在剩余的5（26％，P = 0.18; Fisher's精确测试）。最容易发现最短感测的AV延迟防止心室假枢状，以递增方法（外侧）。在稀有患者中，它识别导致抑制的AV延迟，而室性起搏持续存在于常规内外方法的更长的可编程AV延迟。

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