Document Detail

Autonomic nervous system modulation before the onset of sustained atrioventricular nodal reentry tachycardia.
MedLine Citation:
PMID:  20146782     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Our study was designed to analyze dynamic changes in autonomic tone before the onset of typical sustained atrioventricular nodal reentry tachycardia (AVNRT) in a large group of patients without structural heart disease. MATERIALS AND METHODS: Twenty-four-hour Holter tapes from 42 consecutive patients (27 men and 15 women; aged 30 + or - 21 years) with several episodes of sustained typical AVNRT were analyzed. The diagnosis was validated by transesophageal electrophysiological study. The time-domain calculated parameters were SDNN, SDANN, rMSSD, pNN50; the frequency-domain parameters were low-frequency power (LF, 0.04-0.15 Hz), high-frequency power (HF, 0.15-0.40 Hz), very low-frequency power (VLF, 0.008 to 0.04 Hz) and LF/HF. The mean values in the hour before the onset of sustained AVNRT were compared with the mean values of 2 hours before and 1 hour after the onset of sustained AVNRT. RESULTS: The mean SDNN, rMSSD, pNN50, HF were significantly decreased during the hour preceding the onset of AVNRT, when compared to the mean values observed during the time periods selected. Instead, the LF values and LF/HF were increased before the onset of sustained AVNRT. No significant change in the VLF and atrial ectopic beats were observed. CONCLUSION: This study suggests that sustained typical AVNRT episodes are preceded by increase in adrenergic drive.
Gerardo Nigro; Vincenzo Russo; Annabella de Chiara; Anna Rago; Nadia Della Cioppa; Raffaele Chianese; Donatella Manfredi; Raffaele Calabr?
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc     Volume:  15     ISSN:  1542-474X     ISO Abbreviation:  Ann Noninvasive Electrocardiol     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-02-11     Completed Date:  2010-05-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607443     Medline TA:  Ann Noninvasive Electrocardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  49-55     Citation Subset:  IM    
Chair of Cardiology, Second University of Naples, Monaldi Hospital, Naples, Italy.
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MeSH Terms
Autonomic Nervous System / physiopathology*
Circadian Rhythm
Electrocardiography, Ambulatory / methods,  statistics & numerical data
Electrophysiologic Techniques, Cardiac / methods
Heart Rate
Retrospective Studies
Tachycardia, Atrioventricular Nodal Reentry / physiopathology*

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