Wilson J H, Love C J, Wettenstein E H
Good Samaritan Hospital, Cincinnati, Ohio 45220.
Pacing Clin Electrophysiol. 1990 Oct;13(10):1220-3. doi: 10.1111/j.1540-8159.1990.tb02017.x.
The clinical evaluation of a new automatic sensitivity adjustment feature in the Cosmos II, Model #284-05 is described. This feature, designed to maintain a 2:1 safety margin for sensing intrinsic signals, was activated by way of special programmer software in ten patients at two centers. While the feature worked satisfactorily in some cases, it did not perform as expected, and undersensing in both chambers was observed. This may have been due to biasing the adjustment toward maximum rather than minimum electrograms. This study suggested that electrograms may vary by more than 100% which underscores the importance of this feature, and reinforces the need for continued development.
本文描述了对Cosmos II（型号#284 - 05）中一种新的自动灵敏度调节功能的临床评估。该功能旨在为感知自身信号维持2:1的安全 margin，通过特殊的编程软件在两个中心的10名患者中激活。虽然该功能在某些情况下运行令人满意，但并未达到预期效果，且观察到两个腔室均存在感知不足的情况。这可能是由于将调节偏向于最大而非最小电图所致。本研究表明，电图的变化可能超过100%，这突出了该功能的重要性，并强化了持续开发的必要性。
