{Reference Type}: Observational Study
{Title}: Cardioneuroablation for reflex asystolic syncope: Mid-term safety, efficacy, and patient's acceptance.
{Author}: Kulakowski P;Baran J;Sikorska A;Krynski T;Niedzwiedz M;Soszynska M;Piotrowski R;
{Journal}: Heart Rhythm
{Volume}: 21
{Issue}: 3
{Year}: 2024 Mar 29
{Factor}: 6.779
{DOI}: 10.1016/j.hrthm.2023.11.022
{Abstract}: <B>BACKGROUND: </B>Cardioneuroablation (CNA) is a promising therapy for reflex asystolic syncope; however, convincing data on the mid-term safety and efficacy of this procedure are lacking.<BR><B>OBJECTIVE: </B>The purpose of this study was to assess the mid-term safety, efficacy, and patient acceptance of CNA.<BR><B>METHODS: </B>This prospective observational single-center study included 115 consecutive patients (mean age 39 ± 13 years; 58% female) treated between 2016 and 2022 who completed at least 1-year follow-up.<BR><B>RESULTS: </B>No significant procedure-related acute complications occurred. During median follow-up of 28 months (range 12-75), 95 (83%) remained free from syncope. Of the 20 patients (17%) with syncope recurrence, syncope burden decreased from a mean 17 (median 6.5) to 3.75 (median 2.5) episodes (P = .015). In 9 of 10 patients, pacing system removal was possible. Repeated CNA was needed in 3 patients (3%), whereas pacemaker implantation was performed in 5 (4%). The most frequent mid-term complication of CNA was sinus rhythm acceleration (from 60 ± 14 bpm to 90 ± 16 bpm; P <.0001), which was symptomatic in 31 patients (27%); 8 patients (7%) required chronic beta-blocker and/or ivabradine. Sinus node modification was necessary in 1 patient. Other complaints included dyspnea, chronic chest pain, and decreased exercise capacity, which were mild and reported by 16 patients (14%). Patient acceptance of CNA was very high: 96% stated that it was worth undergoing the procedure.<BR><B>CONCLUSIONS: </B>Mid-term efficacy of CNA exceeds 80%, and acute complications are absent. The most frequent mid-term chronic complication is inappropriate sinus tachycardia, which in 7% required chronic treatment. The procedure is well accepted by patients.