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Preventing the risk of coronary injury in posteroseptal accessory pathway ablation in children: different strategies and advantages of fluoroscopy integrated 3D-mapping system (CARTO-UNIVU™)

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Abstract

Purpose

To evaluate various strategies in order to minimize the risk of coronary injury during posteroseptal accessory pathways ablation in children.

Methods

We retrospectively reviewed 68 posteroseptal accessory pathways ablation procedures (20 decremental and 48 typical accessory pathways) performed in 62 pediatric patients at our institution between July 2009 and December 2016. Only posteroseptal accessory pathways targeted near or within the coronary sinus were included and ablation was mostly performed using irrigated tip radiofrequency.

Results

Median patient age was 11 years with a median body weight of 39 kg. Thirty patients underwent a coronary angiogram, 21 were coupled to the 3D navigation system CARTO-UNIVU™. The coronary angiogram showed a distance of less than 5 mm between the coronary artery and the ablation site in 40% of our cases; 3 patients had a coronary injury related to RF ablation, 6 patients were switched for cryoablation, 3 patients received limited RF energy (20 W). There were no demographic data predicting the proximity of the coronary artery to the ablation site.

Conclusion

Ablation of posteroseptal accessory pathways specifically in children carries a risk of coronary artery injury which is probably underestimated. The use of merged 3D images and coronary angiograms, the reduction of RF energy or the switch to cryoablation are possible alternatives to limit the risk of coronary injury.

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Authors and Affiliations

  1. Institut Cardiovasculaire Paris Sud, Hôpital Privé Jacques Cartier, 6 avenue du Noyer Lambert, 91300, Massy, France

    Margaux Alazard, Jérôme Lacotte, Jérôme Horvilleur, Mina Ait-Said, Fiorella Salerno, Vladimir Manenti, Jean-François Piechaud, Jérôme Garot & Alice Maltret

  2. M3C-Necker, Sorbonne Paris Cité, Hôpital Universitaire Necker Enfants malades, Université Paris Descartes, Paris, France

    Damien Bonnet & Alice Maltret

Authors
  1. Margaux Alazard
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  2. Jérôme Lacotte
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  3. Jérôme Horvilleur
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  4. Mina Ait-Said
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  5. Fiorella Salerno
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  6. Vladimir Manenti
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  7. Jean-François Piechaud
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  8. Jérôme Garot
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  9. Damien Bonnet
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  10. Alice Maltret
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Correspondence to Margaux Alazard.

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Alazard, M., Lacotte, J., Horvilleur, J. et al. Preventing the risk of coronary injury in posteroseptal accessory pathway ablation in children: different strategies and advantages of fluoroscopy integrated 3D-mapping system (CARTO-UNIVU™). J Interv Card Electrophysiol 52, 127–135 (2018). https://doi.org/10.1007/s10840-018-0339-x

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  • DOI: https://doi.org/10.1007/s10840-018-0339-x

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