Ayers Brian, Cheyne Christina, Wood Katherine, Quinlan Amy, Dick Sara, Vidula Himabindu, Alexis Jeffrey, Barrus Bryan, Prasad Sunil, Gosev Igor
University of Rochester Medical Center Rochester NY USA.
Clin Case Rep. 2020 Feb 7;8(3):512-515. doi: 10.1002/ccr3.2583. eCollection 2020 Mar.
Short-to-shield (STS) is a potential complication for left ventricular assist device (LVAD) patients supported by the HeartMate II (HMII) pump. This phenomenon occurs when a damaged internal wire within the driveline makes contact with the surrounding sheath, resulting in insufficient power delivery to the motor when connected to a grounded power base unit (PBU). An ungrounded cable can be used to negate these effects, but the long-term safety of this treatment strategy is unknown. In this case series, we present our institutional experience treating 17 STS patients with an ungrounded cable. In total, we present 4922 patient-days (13.4 patient-years) of ungrounded cable support after primary STS treatment. There were no deaths or complications related to STS. These data suggest that the long-term use of an ungrounded cable is a reasonable treatment option for patients who cannot or do not wish to undergo pump exchange or splice repair.
短至屏蔽（STS）是接受HeartMate II（HMII）泵支持的左心室辅助装置（LVAD）患者可能出现的一种并发症。当驱动线内损坏的内部电线与周围的护套接触时，就会出现这种现象，导致在连接到接地电源基座单元（PBU）时，电机的电力输送不足。可以使用不接地电缆来消除这些影响，但这种治疗策略的长期安全性尚不清楚。在本病例系列中，我们介绍了我们机构使用不接地电缆治疗17例STS患者的经验。总共，我们在原发性STS治疗后提供了4922个患者日（13.4患者年）的不接地电缆支持。没有与STS相关的死亡或并发症。这些数据表明，对于不能或不希望进行泵更换或拼接修复的患者，长期使用不接地电缆是一种合理的治疗选择。
