Overview
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