Pacing failure occurred following significant changes in pacing impedance and threshold over the initial two weeks.
Impedance decreased sharply within one week, indicating a potential early warning sign for dislodgement risk.
The observation of threshold increase at the two-week mark raises concerns about device performance post-implantation.
The findings suggest monitoring impedance changes could help in timely intervention and device management.
Abstract
Pacing impedance declined rapidly 1 week after implantation, followed by a significant increase in threshold at the 2-week follow-up, resulting in pacing failure.