Heart Rate Variability and Atria Function in Children at Late Follow-Up Evaluation After Atrioventricular Node Slow-Pathway Radiofrequency Ablation

This study was designed to assess the changes in the conductive system, autonomic dysfunction, and global and regional function of the atria and ventricles in children late after slow-pathway radiofrequency ablation (RFA). The study enrolled 22 children, who has successfully undergone RFA 2 to 5 yea...

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Bibliographic Details
Published in:Pediatric cardiology 2011-08, Vol.32 (6), p.792-800
Main Authors: Sileikiene, Rima, Vaskelyte, Jolanta, Mizariene, Vaida, Nedzelskiene, Irena, Verseckaite, Raimonda, Jurkevicius, Renaldas, Baksiene, Dalia, Sileikyte, Viktorija, Kevalas, Rimantas
Format: Article
Language:English
Subjects:
Adolescent
Atrioventricular Node - physiopathology
Atrioventricular Node - surgery
Cardiac Surgery
Cardiology
Catheter Ablation - methods
Electrocardiography, Ambulatory - methods
Female
Follow-Up Studies
Heart Conduction System - physiopathology
Heart Conduction System - surgery
Heart Rate - physiology
Humans
Male
Medicine
Medicine & Public Health
Original
Original Article
Tachycardia, Atrioventricular Nodal Reentry - physiopathology
Tachycardia, Atrioventricular Nodal Reentry - surgery
Time Factors
Treatment Outcome
Vascular Surgery
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Summary:This study was designed to assess the changes in the conductive system, autonomic dysfunction, and global and regional function of the atria and ventricles in children late after slow-pathway radiofrequency ablation (RFA). The study enrolled 22 children, who has successfully undergone RFA 2 to 5 years previously (RFA group) and 20 healthy children (control group). Electrophysiologic study was performed for the RFA group. Holter monitoring and echocardiography were performed for all the children. At a late follow-up assessment, the RFA children were free of paroxysms, whereas 8 of the 22 children (36%) reported transient palpitations. Both mean and maximal heart rates (HR) were significantly increased, whereas indices of HR variability (% of succesive normal sinus RR intervals exceeding 50 ms [pNN50], root mean square of the succesive normal sinus RR interval difference [rMSSD], high-frequency component [HFC]) were significantly decreased in the RFA group compared with preablation and control data. Left atrial (LA) and right atrial (RA) volumes were significantly higher, and atria deformation indices were significantly lower in the RFA group. Correlations were found between the mean HR and the volumes of LA ( r  = 0.477; p  
ISSN:0172-0643
1432-1971
DOI:10.1007/s00246-011-9983-y