SÓNG TỔN THƯƠNG DỰ ĐOÁN KẾT QUẢ SỚM NGƯỠNG TẠO NHỊP TRONG CẤY MÁY TẠO NHỊP TIM VĨNH VIỄN

Abstract

Objectives: The aim of this sudy was to evaluate the role ofcurrent of injury which predicts the early outcome in performance of implanting permanent cardiac pacemaker device. Subjects and method: 91 patients with permanent cardiac pacemaker. A total 127 active-fixation leads were studied and 108 leads had a current of injury. Results: Ninety-one ventricular leads were implanted successfully, and 77 leads had a COI. From baseline to the time of fixation, the duration of the intracardiac EGM in ventricular leads increased from 96,8 ± 18,2 ms to 168,5 ± 31,8 ms (p < 0,01), and the ST-segment elevation increased from 64,1 ± 9,5 ms to 111,2 ± 15,1 ms, pacing threshold at the time of fixation decreased from 0,78 ± 0,15 V to 0,51 ± 0,07 V at 10 minutes after fixation. Thirty-six atrial leads were implanted successfully and thirty-one leads had a COI. The duration of intracardiac EGM in atrial leads increased from 64,1 ± 9,5 ms at baseline to 111,2 ± 15,1 ms at the time of fixation, the ST-segment elevation 0,85 ± 0,41 mV to 2,43 ± 0,73 mV at the same times, pacing threshold reduced from 0,9 ± 0,17 V at the time of fixation to 0,65 ± 0,18 V at 10 minutes after fixation. Conclusion: The leads present the COI, within 10 minutes, pacing threshold will return to an acceptable range even if the initial threshold is high.