Study limitations
One limitation of this study is its retrospective nature, including data
from only one medical center. Because of older age, the all-cause
mortality rate was relatively high in this study.
Another limitation was the absence
of baseline and follow-up right heart size and function by
echocardiography. However, we still provided important information about
lead-related post-implant TR progression and its associated outcomes in
patients with transvenous ventricular-based PPM.