Evolution of Intracardiac Electrograms Recorded by Left Bundle Branch Pacing Lead in Patients With ICD or CRT-D

Summary

The goal of this observational study is to investigate the changes of LBB EGM during daily activities and overdrive pacing at the time of peri-implantation and up to 6-month follow-ups of ICD/CRT-D patients. The main question it aims to answer is: • Does the LBBP lead can provide accurate, stable, and valid EGM for ICD/CRT-D sensing and detection of ventricular tachyarrhythmia events? In each patient intracardiac EGMs of LBBP lead will be collected by ambulatory Holter monitor at the time of peri-implantation and up to 6-month follow-up. EGM collection will be collected at resting and walking conditions and overdrive pacing.

Eligibility

Inclusion Criteria:

* Patients aged \>=18 yrs.
* Patients indicated for ICD or CRT-D (primary or secondary prevention)
* Patients who recently (\<=30 days) received ICD/CRT-D implantation with LBBP
* Patients' EGM can be digitally recorded
* Patients are willing to participate in the study and provide signed informed consent

Exclusion Criteria:

* Patients received CIED upgrade or replacement with old pacing leads
* Patients are pregnant
* Patients participate in another study that will confound this study

Conditions3

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