Effects of Linear Ablation at the Isthmus Between the Tricuspid Annulus and Inferior Vena Cava for Atrial Flutter on Autonomic Nervous Activity
| Autor: | Miyako Kanemoto, Akihiro Suzuki, Iwao Yamaguchi, Bumpei Niho, Keisuke Kuga, Masae Endo, Mami Enomoto, Aiyan Li |
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| Rok vydání: | 2002 |
| Předmět: |
Male
medicine.medical_specialty Radio Waves Radiofrequency ablation Vena Cava Inferior Autonomic Nervous System Inferior vena cava law.invention Heart Rate law Internal medicine Heart rate medicine Humans Heart rate variability Sinus rhythm Aged Autonomic nerve business.industry General Medicine Middle Aged medicine.disease Autonomic nervous system Atrial Flutter medicine.vein Anesthesia Cardiology Female Tricuspid Valve Cardiology and Cardiovascular Medicine business Atrial flutter |
| Zdroj: | Circulation Journal. 66:53-57 |
| ISSN: | 1347-4820 1346-9843 |
| DOI: | 10.1253/circj.66.53 |
| Popis: | Heart rate is largely affected by the autonomic nervous system. However, little is known about the anatomic pathway of autonomic nerve fibers innervating the sinus node. The present study: (1) evaluates the effects of cavotricuspid isthmus ablation for common atrial flutter (AFL) on autonomic nervous function by using heart rate variability analysis, and (2) investigates the distribution of autonomic nerve pathways innervating the sinus node. Twelve patients with paroxysmal common atrial flutter who maintained sinus rhythm both before and after radiofrequency ablation were selected for the study. Holter ambulatory recordings were performed before and after (2.3 +/- 1.0 days) radiofrequency ablation of cavotricuspid isthmus. Heart rate and time domain (SDANN, rMSSD, pNN50) and frequency domain (low frequency (LF), high frequency (HF), LF/HF) analysis of heart rate variability were compared before and after ablation. Mean heart rate did not change significantly after ablation (59 +/- 6 vs 61 +/- 9 beats/min); parasympathetic indices of heart rate variability (SDANN, rMSSD, pNN50, HF) did not change significantly (110 +/- 37 vs 117 +/- 20 ms; 32 +/- 21 vs 28 +/- 9 ms; 4.8 +/- 0.9 vs 4.7 +/- 0.71n(ms2)); and sympathetic indices of heart rate variability (LF/HF) did not change significantly (1.1 +/- 0.2 vs 1.2 +/- 0.1). Cavotricuspid isthmus ablation for atrial flutter did not significantly change heart rate and heart rate variability because parasympathetic and sympathetic fibers innervating the sinus node are scarce in this region. |
| Databáze: | OpenAIRE |
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