Heart rate variability: Does it change after RF ablation of reentrant supraventricular tachycardia?

Emkanjoo, Z. and Alasti, M. and Arya, A. and Haghjoo, M. and Dehghani, M.R. and Fazelifar, A.F. and Heydari, R. and Sadr-Ameli, M.A. (2005) Heart rate variability: Does it change after RF ablation of reentrant supraventricular tachycardia? Journal of Interventional Cardiac Electrophysiology, 14 (3). pp. 147-151.


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Background: Following RF ablation of reentrant supraventricular tachycardia, inappropriate sinus tachycardia may occur. Local parasympathetic denervation is a possible mechanism for these rhythm disturbances. The purpose of this study was to determine the incidence of sinus tachycardia and to determine the relation between endocardial lesions at different ablation sites and alterations in autonomic tone in several different groups of patients with supraventricular tachycardia, using techniques of heart rate variability analysis. Methods: The subjects of this study were 75 patients (48 women, 27 men) with a mean age of 39.99 (SD = 13.39). They underwent RF ablation of AV nodal slow pathways (40 cases), posteroseptal APs (23 cases), left lateral and right free wall APs (12 cases) because of symptomatic tachycardias. The mean sinus rate and time domain (standard deviation of RR intervals and root mean square of differences of adjacent RR intervals) and frequency domain (low frequency, high frequency and low frequency/high frequency ratio) analyses of heart rate variability were obtained by use of 24 hour Holter monitoring before and 1 month after ablation compared with pre-ablation values. Results: Analysis of 24 hour ambulatory Holter-monitors, performed 1 month after RF ablation, showed no significant changes in time and frequency domain parameters of heart rate variability in different groups. A significant increase in mean heart rate was noted after RF ablation at AV nodal slow pathway group and left freewall/right free wall accessory pathways group. Patients undergoing RF ablation of right or left posteroseptal accessory pathways had no significant increase in the mean heart rate. Conclusion: In summary, an increase in sinus tachycardia may be initiated by RF ablation of atrioventricular reentrant tachycardia (AVNRT) and right free wall or left free wall accessory pathways. This finding shows that the modifications of heart rate are not directly related to the posteroseptal region or to the accessory pathways. © 2006 Springer Science + Business Media, Inc.

Item Type: Article
Additional Information: cited By 3
Uncontrolled Keywords: adult; ambulatory monitoring; article; atrioventricular junction arrhythmia; cardiovascular parameters; controlled study; correlation analysis; endocardium; female; heart rate; heart rate variability; heart ventricle septum; heart ventricle wall; Holter monitoring; human; incidence; major clinical study; male; postoperative period; preoperative period; priority journal; radiofrequency ablation; reentry arrhythmia; RR interval; sinus rhythm; sinus tachycardia, Adult; Catheter Ablation; Electrocardiography, Ambulatory; Female; Heart Rate; Humans; Male; Tachycardia, Atrioventricular Nodal Reentry; Treatment Outcome
Subjects: WG Cardiovascular System
Depositing User: Librarian Farzaneh Dini
Date Deposited: 26 May 2019 07:32
Last Modified: 26 May 2019 07:32
URI: http://eprints.iums.ac.ir/id/eprint/12097

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