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Right ventriculography improves the accuracy of leadless pacemaker implantation in right ventricular mid-septum
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Right ventriculography improves the accuracy of leadless pacemaker implantation in right ventricular mid-septum
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Journal Article
Right ventriculography improves the accuracy of leadless pacemaker implantation in right ventricular mid-septum
2023
Overview
Background
Implanting leadless pacemakers in the right ventricular (RV) apex is prone to causing pericardial tamponade and myocardial perforation.
Objective
To investigate the feasibility and safety of right ventriculography-guided implantation of Micra™ leadless pacemaker (Micra™, Medtronic, Minneapolis, MN, USA) in the RV mid-septum.
Methods
One hundred eight consecutive patients who underwent Micra™ implantation intended in the mid-septum were enrolled and randomized (3:1) into the radiography group (
n
= 81) with assistance of right ventriculography to illustrate the RV septum and the non-radiography group (
n
= 27). All subjects underwent a postoperative computed tomography (CT) scan to determine the Micra™ location. The Micra™ location assessed by CT image was compared between the two groups to confirm the accuracy of the intended pacing site. The duration of the procedure, X-ray radiation dose, and time were also compared between the two groups.
Results
Reconstructed CT 3-D cardiac images found the Micra™ location in the intended mid-septum in 13 patients (48.1%, 13/27) in the non-radiography group and 76 patients (93.8%, 76/81) in the radiography group (
P
< 0.0001 between two groups). There was no significant difference in procedure interval between the two groups while the X-ray radiation dose (564.86 ± 112.44 vs. 825.85 ± 156.12 mGy,
P
< 0.0001), X-ray exposure time (7.79 ± 1.43 vs. 12.03 ± 2.86 min,
P
< 0.0001), and the number of fluoroscopy re-positioning (2.79 ± 1.03 vs. 6.41 ± 1.82,
P
< 0.0001) were significantly less in the radiography group than in the non-radiography group. No implantation-related complications were observed in both groups.
Conclusion
Right ventriculography increases the accuracy of Micra™ implantation in the mid-septum and reduces X-ray exposure.
Trial registration
The trial registration number (ChiCTR2100051374) and date (09/22/2021).
Publisher
Springer US,Springer Nature B.V
Subject
