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05.06.2019

Long-term development of radiation exposure, fluoroscopy time and contrast media use in daily routine in cryoballoon ablations after implementation of intracardiac echocardiography and other radioprotective measures: experiences from a large single-centre cohort

Zeitschrift:
Journal of Interventional Cardiac Electrophysiology
Autoren:
Vanessa Rubesch-Kütemeyer, Thomas Fischbach, Denise Guckel, Britta Körber, Dieter Horstkotte, Klaus-Jürgen Gutleben, Georg Nölker
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Abstract

Purpose

The concern of higher radiation exposure during cryoballoon ablation (CBA) compared with radiofrequency ablation for atrial fibrillation (AF) was raised before. Previously, we compared CBA plus intracardiac echocardiography (ICE) to our former standard approach without ICE. A substantial reduction of radiation exposure without compromising safety or outcome was observed. We now investigate if at all and possibly to which amount radiation reduction can be achieved with growing experience.

Methods

We retrospectively analysed procedure time, dose area product (DAP), fluoroscopy time (FT) and contrast media (CM) use for all patients receiving CBA between 2013 and 2017 for AF.

Results

In 1131 procedures, procedure time decreased significantly between 2013 and 2017 (2013 111 ± 26 min, 2017 99 ± 25 min, p = 0.005). DAP halved between 2013 and 2014 without further significant decline (2013 1428 ± 1276 cGycm2, 2014 725 ± 551 cGycm2, p < 0.001). FT demonstrated a constant decrease from 2013 to 2017 (2013 11.7 ± 5.5 min, 2017 5.1 ± 3.5 min, p < 0.001). CM use did not show a significant reduction comparing 2013 to 2017 (2013 62 ± 19 ml, 2017 59 ± 18 ml, 2013/2017 p = 0.584).

Conclusion

Given the imminent negative effects of radiation, every effort should be undertaken for its reduction. Feasible protocols can be kept simple by technical changes as reducing frame rates and basic radiation reduction strategies such as collimation, but ICE might add additional benefit. With growing experience and awareness of radioprotection, DAP and FT as low as or lower than in radiofrequency ablations seem possible.

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