40
Participants
Start Date
November 14, 2019
Primary Completion Date
June 29, 2021
Study Completion Date
June 29, 2021
Left bundle branch pacing
Successful LBBP was defined as (1) LBBP lead is located at 1.5-2cm from His-bundle towards right ventricular apex; (2) Paced QRS morphology of right bundle branch delay(CRBBD) in lead V1; (3) Stimulus to the peak of R wave in V5 and V6 QRS wave, which represents left ventricular activation time(Stim-LVAT), is less than 100ms and constant at high and low output pacing; (4) Unipolar pacing threshold\<1.5V/0.5ms; (5) Recording P potential when narrow QRS escape rhythm or CRBBB escape rhythm(not essential).
Biventricular pacing
Implantation of a LV pacing lead is attempted using the standard-of-care technique first.
The First Affiliated Hospital with Nanjing Medical University, Nanjing
Fu Wai Hospital, Beijing, China, Beijing
Fu Wai Hospital, Beijing, China
OTHER
The First Affiliated Hospital with Nanjing Medical University
OTHER