European heart journal. Case reports · 2026
Mechanical interaction between sequential Micra devices resolved by programming alone: a case of premature battery depletion in a 91-year-old patient.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
He Changjian, Guo Tianze, Ding Chunhua, Zhang Wenchang
Аннотация
BACKGROUND: The Micra transcatheter pacing system provides a leadless alternative for patients requiring ventricular pacing. When a leadless device reaches end of service or fails prematurely, a second device is commonly implanted.
CASE SUMMARY: We report a 91-year-old man with premature Micra AV battery depletion 28 months after implantation. During the second implantation, mechanically mediated device-device interaction caused intermittent oversensing. Oversensing was resolved by increasing the sensing threshold, which avoided device repositioning or retrieval.
DISCUSSION: Suspected mechanically mediated interaction between sequential Micra devices may cause oversensing and pacing inhibition. In patients with clinically stable condition and adequate intrinsic R-wave amplitude, programming optimization may be considered before invasive revision; however, future management should account for cumulative right ventricular device burden.
CASE SUMMARY: We report a 91-year-old man with premature Micra AV battery depletion 28 months after implantation. During the second implantation, mechanically mediated device-device interaction caused intermittent oversensing. Oversensing was resolved by increasing the sensing threshold, which avoided device repositioning or retrieval.
DISCUSSION: Suspected mechanically mediated interaction between sequential Micra devices may cause oversensing and pacing inhibition. In patients with clinically stable condition and adequate intrinsic R-wave amplitude, programming optimization may be considered before invasive revision; however, future management should account for cumulative right ventricular device burden.