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Aortic cusp ablation for premature ventricular contractions and ventricular tachycardia in children: a 5-year single-center experience

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Abstract

Purpose

Aortic cusps might be the source of supraventricular or ventricular arrhythmias. For many years, aortic cusp ablation has been widely used to treat premature ventricular contractions (PVCs) and ventricular tachycardia (VT). However, the data on the outcomes of this procedure in children are limited. The study aimed to convey or describe our own aortic cusp ablation experiences in children and, thus, contribute to the literature.

Methods

The focus was pediatric cases of ventricular arrhythmia in which the origin of the PVCs was ablated above the Valsalva. The sample comprised patients who underwent aortic cusp ablation between 2013 and 2018. The demographic characteristics, noninvasive test results, procedure details, and follow-up results for the patients were noted.

Results

The 3D EnSite Precision cardiac mapping system and limited fluoroscopy were used. A total of 26 procedures were performed on 22 patients. The mean age was 14.4 ± 3.0 (9–19) years, and the mean weight was 57.3 ± 17.5 (27–99) kg. The mean follow-up period after the first presentation was 38.6 ± 22.9 (3–72) months. There were significant differences in the values of the transition index, V2S/V3R, IIR/IIIR, aVRS/aVLS ratio, and QRS polarity in I at various locations. The most common ablation site was the left coronary cusp (LCC). Radio frequency (RF) ablation, cryoablation, and irrigated RF ablation were found to be effective energy sources in 15, 4, and 3 patients, respectively. Patients who underwent ablation at the LCC–right coronary cusp (RCC) commissure were more likely to present with only VT and to experience worsening symptoms. Twelve patients had previously undergone ablation of the right ventricular outflow tract (RVOT). Ablation in the RVOT had been previously performed in all the patients who eventually underwent ablation at the RCC and the LCC–RCC commissure.

Conclusion

Aortic cusp ablation can be safely performed in children. The careful evaluation of previous noninvasive tests provides important data for determining the location. There might be significant differences in the signs and requirements on the basis of the locations during mapping and ablation.

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Correspondence to Senem Ozgur.

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Ergul, Y., Ozgur, S., Şahin, G.T. et al. Aortic cusp ablation for premature ventricular contractions and ventricular tachycardia in children: a 5-year single-center experience. J Interv Card Electrophysiol 61, 283–292 (2021). https://doi.org/10.1007/s10840-020-00803-0

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  • DOI: https://doi.org/10.1007/s10840-020-00803-0

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