PMID- 9805253 OWN - NLM STAT- MEDLINE DCOM- 19990119 LR - 20190817 IS - 0047-1828 (Print) IS - 0047-1828 (Linking) VI - 62 IP - 10 DP - 1998 Oct TI - Decreasing parasympathetic tone activity and proarrhythmic effect after radiofrequency catheter ablation--differences in ablation site. PG - 733-40 AB - Holter ECG was used to evaluate changes in heart rate variability (HRV), indicators of the autonomic nervous system, and arrhythmia before and after radiofrequency (RF) catheter ablation in patients with symptomatic supraventricular tachycardia. Ablation targets in 43 patients included the atrioventricular (AV) nodal pathway (AVNRT, n = 17), a right free wall accessory pathway (n = 10), a septal accessory pathway (n = 6), and a left free wall accessory pathway (n = 10). The High frequency component (0.15 - 0.40 Hz) or pNN50 of HRV analysis, indicating parasympathetic activity, significantly decreased immediately after RF ablation in the AVNRT and septal accessory pathway groups, but not in the right or left wall groups. In contrast, in all four groups, ventricular premature contractions (VPCs) significantly increased in most of the patients, and ventricular tachycardia occurred in a few of the patients immediately after RF ablation. There was no serious arrhythmia. These alterations in HRV analysis and arrhythmia returned to the control level after 1 week or more. VPCs after RF ablation did not consistently increase as a result of the reduced parasympathetic tone activity, but at the lesion near the conduction system, the increase in VPCs was inhibited by higher parasympathetic tone activity, because the parasympathetic nerve fibers and receptors were distributed in these lesions. FAU - Jinbo, Y AU - Jinbo Y AD - Third Department of Internal Medicine, Showa University, School of Medicine, Tokyo, Japan. FAU - Kobayashi, Y AU - Kobayashi Y FAU - Miyata, A AU - Miyata A FAU - Chiyoda, K AU - Chiyoda K FAU - Nakagawa, H AU - Nakagawa H FAU - Tanno, K AU - Tanno K FAU - Kurano, K AU - Kurano K FAU - Kikushima, S AU - Kikushima S FAU - Baba, T AU - Baba T FAU - Katagiri, T AU - Katagiri T LA - eng PT - Comparative Study PT - Journal Article PL - Japan TA - Jpn Circ J JT - Japanese circulation journal JID - 7806868 SB - IM MH - Adolescent MH - Adult MH - Aged MH - *Catheter Ablation/adverse effects MH - Electrocardiography, Ambulatory MH - Heart Rate MH - Heart Ventricles/*innervation/pathology MH - Humans MH - Middle Aged MH - Parasympathetic Nervous System/*physiopathology MH - Tachycardia, Supraventricular/pathology/*therapy EDAT- 1998/11/07 00:00 MHDA- 1998/11/07 00:01 CRDT- 1998/11/07 00:00 PHST- 1998/11/07 00:00 [pubmed] PHST- 1998/11/07 00:01 [medline] PHST- 1998/11/07 00:00 [entrez] AID - 10.1253/jcj.62.733 [doi] PST - ppublish SO - Jpn Circ J. 1998 Oct;62(10):733-40. doi: 10.1253/jcj.62.733.