Comparison of the procedure with or without right
ventriculography
As shown in Table 2, the total procedural time was not significantly
different between two groups while the number of fluoroscopy
repositioning for intended pacing sites was significantly higher in the
non-radiograph group than in the radiograph group. Fluoroscopy
repositioning was defined as a change in the target site under
fluoroscopy before the deployment of the MicraTMpacemaker. Fluoroscopic use duration and the X-ray exposure dose were
significantly greater in the non-radiography group than in the
radiograph group.
None of the study participants had procedure-related adverse events or
complications such as abnormal pacing parameters, cardiac perforation
and effusion, a prolonged hospital stay over 48 hours, or infection. No
worsening or development of tricuspid valve regurgitation and other
implantation-related complications was observed by post-implantation
echocardiograph and follow-up visits.