Selective angiography through radiofrequency catheter during ablation of premature ventricular contractions originating from aortic cusp: A single-centre experience

Acar, Berrin; Karaüzüm, İrem; Hanci, Kaan; Vural, Ahmet; Ağaçdiken, Ayşen

doi:10.1016/j.ipej.2022.03.005

Cited by 2 publications

(1 citation statement)

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“…However, many do not employ this approach due to a potential collateral damage of the aortic valve or the coronary arteries 5 . Other authors advice to use intracardiac echo (ICE) 6 or aortic angiography 7 to achieve an appropriate NCAC catheter position and to exclude close proximity to the coronary ostia. As a matter of fact, the ostia of the right and left coronary arteries are adjacent to the right coronary cusp (RCC) and the left coronary cusp (LCC), respectively, and are at safe distance from the NCAC.…”

Section: Introductionmentioning

confidence: 99%

Pacing maneuvers from the aortic cusps: A useful technique during ablation of focal arrhythmias arising from the aortic root

Toniolo

Taurian

Rebellato

et al. 2023

Pacing Clinical Electrophis

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Background:The ablation of arrhythmias arising near the His-bundle region in the noncoronary aortic cusp (NCAC) is challenging. Among the aortic sinuses of Valsalva, the NCAC is located between the right atrium and the left atrium. For this reason, pacing from the NCAC should result in atrial capture while pacing from the right and left coronary cusps (LCC) may result in ventricular capture. The objective of this study is to prove that atrial capture during pacing from the sinuses of Valsalva may be used to confirm a correct position in the non-coronary cusp.Methods: A total of 30 patients with structurally normal heart undergoing left sided ablation procedures, underwent electrophysiological study of the aortic cusps. Each of the aortic valve cusps was paced with increasing outputs and analyzed offline to determine their unique electrocardiographic characteristics. Results:In the NCAC, we obtained an atrial capture in 29 out of 30 patients (96.6%).The atrial capture was highly specific for a position in the NCAC (p < .001). The median output required to capture from the cusp was 10 mA (range 5-25 mA) at a pulse width of 2 ms. In the right coronary cusp (RCC) and LCC, we obtained ventricular capture in all patients (100%). The median output required to capture from the cusp was 10 mA (range 10-25 mA) in RCC and 25 mA (range 10-25 mA) in LCC at a pulse width of 2 ms. Conclusions: Atrial capture during a pacemapping from the aortic cusps can be considered proof of a correct position in NCAC. K E Y W O R D S aortic cusps, pacemapping, peri-hisian tachycardia, sinuses of Valsalva 1 INTRODUCTION Several prior reports have described ablation of supraventricular arrhythmias arising near the His-bundle region (focal atrial tachycardias [ATs] and accessory pathways [APs]) from the non-coronary sinus of Valsalva of the aortic root. 1-4 The non-coronary aortic cusp (NCAC)

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Section: Introductionmentioning

confidence: 99%