A Case Report: Electrotonic Modulation-Related T-Wave Over-Sensing After Left Bundle Branch Pacing
Linlin Li1, Manxin Lin1, Jincun Guo1
1Division of Cardiology, Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, Fujian, China.
Summary
Left bundle branch pacing (LBBP) in a heart failure patient with a reduced ejection fraction (EF) led to T-wave oversensing. Adjusting the post-ventricular atrial refractory period (PVARP) resolved this pacing issue.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Dilated cardiomyopathy with reduced ejection fraction (EF) and complete left bundle branch block (CLBBB) often requires cardiac resynchronization therapy (CRT).
- Left bundle branch pacing (LBBP) is an alternative CRT technique offering physiological ventricular activation.
- T-wave oversensing can be a complication of ventricular pacing, potentially leading to inappropriate inhibition of pacing.
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