Sermasi S, Marconi M, Libero L, Moracchini P V, Rusconi L, Mininno A, Sigliano R
Department of Cardiology, Ospedale Infermi, Rimini, Italy.
Pacing Clin Electrophysiol. 1996 Nov;19(11 Pt 2):1799-804. doi: 10.1111/j.1540-8159.1996.tb03228.x.
AutoCapture is a programmable feature of the Pacesetter Microny SR + 2425T VVIR pacemaker, which provides for the automatic capture verification, increase in output in the presence of noncapture and threshold searching, with adjustment of output settings. The effectiveness of this unit in conjunction with the Membrane models 1400T and 1401T bipolar endocardial leads was studied in 54 patients followed at 19 Italian Centers. The patients were randomized at the time of implantation to receive either the model 1400T or the 1401T lead. The electrodes in these leads are covered by a Nafion membrane, which was either impregnated (model 1400T) or not-impregnated (model 1401T) with steroid. This paper reports the data collected over the first six weeks postimplantation. The results of the automatic capture function was compared to the capture threshold measured using the Vario technique at the time of predischarge evaluations, and weeks 1,2, and 6 of postimplant follow-up. The reliability and effectiveness of the pulse generator-lead system allowed for consistent pacing at very low outputs and safety preserved at a programmed output only 0.3 V above the capture threshold.
自动夺获功能是百盛 Microny SR + 2425T VVIR 起搏器的一项可编程特性，它可实现自动夺获验证、在未夺获时增加输出以及进行阈值搜索，并可调整输出设置。在意大利 19 个中心对 54 例患者进行了研究，观察该装置与 Membrane 1400T 和 1401T 双极心内膜导线配合使用的有效性。患者在植入时随机分组，分别接受 1400T 型或 1401T 型导线。这些导线中的电极覆盖有 Nafion 膜，该膜有的浸有类固醇（1400T 型），有的未浸有类固醇（1401T 型）。本文报告了植入后前六周收集的数据。将自动夺获功能的结果与在出院前评估以及植入后随访第 1、2 和 6 周时使用 Vario 技术测量的夺获阈值进行了比较。脉冲发生器 - 导线系统的可靠性和有效性使得能够在非常低的输出水平下实现一致的起搏，并且在仅比夺获阈值高 0.3 V 的程控输出下仍能保持安全性。
