Comparison between His-bundle pacing guided by Ensite NavX system and conventional fluoroscopy.

BACKGROUND

Conventional fluoroscopy guidance, permanent His-bundle pacing (HBP) usually involves high fluoroscopy exposure. This study aims to explore the feasibility of Ensite NavX system and compare its pacing parameters and fluoroscopy doses (FD) with that of conventional fluoroscopy guiding HBP.

METHODS AND

RESULTS

A total of 30 patients receiving HBP from June to January 2019 were prospectively enrolled into this study (15 patients guided by conventional fluoroscopy and 15 patients by NavX system). Procedure time, FD, and pacing parameters were recorded at implant and 3-month follow-up. Fourteen patients (93.3%) underwent successful HBP using Ensite NavX system. The total FD was 1.4 ± 0.5 mGy in NavX group and 16.1 ± 2.2 mGy in conventional group (P < 0.001). The His lead FD was 0.4 ± 0.3 mGy in NavX group and 12.5 ± 2.2 mGy in conventional group (P < 0.001). There was no significant difference in pacing parameters at implant and follow-up between the two groups.

CONCLUSION

Guided by Ensite NavX system, HBP is efficient with a significant reduction in fluoroscopy exposure.