The subcutaneous implantable cardioverter defibrillator (S‐ICD) is an alternative to transvenous ICD in patients who do not need cardiac pacing. We report the case of a young isometric athlete who received S‐ICD for primary prevention of sudden death. Lead dislodgement and myopotential noise oversensing during isometric training led to inappropriate shock, and a surgical revision was performed. During the procedure, strong fibrous adhesions were found, requiring polytetrafluoroethylene dilator sheaths. The S‐ICD was finally reimplanted. Despite continued isometric training, no more myopotential oversensing occurred after 1‐year follow‐up. The present case highlights the possible higher risks of lead complication in an isometric athlete and the uncommon effort in removing an old‐generation subcutaneous defibrillator lead.

中文翻译：

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年轻等长运动员的 S-ICD 导线移位：一种罕见的并发症。

对于不需要心脏起搏的患者，皮下植入式心脏复律除颤器 (S-ICD) 是经静脉 ICD 的替代方案。我们报告了一个年轻的等长运动员的案例，他接受了 S-ICD 以进行猝死的一级预防。等长训练期间导线移位和肌电位噪声过度感知导致不适当的休克，并进行了手术翻修。在手术过程中，发现强烈的纤维粘连，需要聚四氟乙烯扩张器鞘。S-ICD 终于被重新植入。尽管持续进行等长训练，但在 1 年的随访后没有发生更多的肌电过度感知。本案例强调了等长运动员可能出现更高的导线并发症风险，以及移除老一代皮下除颤器导线的罕见努力。