Kleinert M, Bock M, Wilhelmi F
Z Kardiol. 1977 Feb;66(2):66-73.
The new atrial leads (J-version) of type Medtronic 6991, of which we implanted endocardially a total of 53 between April 1975 and May 1976, are characterized by properties, as, up to now, were exclusively to be seen in the so-called flange electrodes of ventricular position. 1. The tined J-leads were easily to introduce and required only an average of 5 minutes to position into the right appendage. 2. Moreover, these atrial leads guaranteed an anatomic stable anchorage with a dislodgement ratio of less than 6% (3 of 53). 3. Additionally, the action voltages sensed the J-shaped electrodes showed themselves averaging 5.2 mV of very high amplitude. Up to this time comparable results could not be achieved neither by other atrial leads nor techniques of their emplacement. The intraatrial voltage thresholds exceeded, as described before, the intraventricular ones by two to three times. In spite of this, no exit block was seen in 34 cases with atrial pacing systems, not even during an observation time of maximal 13 months. Therefore, the tined J-leads fulfill all requirements of a suitable atrial electrode.
美敦力6991型新型心房电极（J版），我们于1975年4月至1976年5月期间共心内膜植入了53根，其特性迄今为止仅见于所谓的心室位置的凸缘电极。1. 带倒刺的J形电极易于插入，平均只需5分钟即可置于右心耳。2. 此外，这些心房电极保证了解剖学上的稳定固定，脱位率低于6%（53根中有3根）。3. 此外，J形电极所感知的动作电压平均显示出5.2 mV的非常高的幅度。截至此时，其他心房电极及其植入技术均未取得可比结果。如前所述，心房内电压阈值比心室内电压阈值高出两到三倍。尽管如此，在34例心房起搏系统病例中未观察到出口阻滞，即使在最长13个月的观察期内也是如此。因此，带倒刺的J形电极满足了合适心房电极的所有要求。
