Cited by 87Atrial Fibrillation Management and OutcomesCardiac electrophysiology and arrhythmiasCardiac Arrhythmias and Treatments

Reversal of Electrical Remodeling After Cardioversion of Persistent Atrial Fibrillation

RAITT, MERRITT H., KUSUMOTO, WALTER, GIRAUD, GEORGE, MCANULTY, JOHN H.·2004·Journal of Cardiovascular Electrophysiology

Abstract

Introduction: In animals, atrial fibrillation results in reversible atrial electrical remodeling manifested as shortening of the atrial effective refractory period, slowing of intra‐atrial conduction, and prolongation of sinus node recovery time. There is limited information on changes in these parameters after cardioversion in patients with persistent atrial fibrillation. Methods and Results: Thirty‐eight patients who had been in atrial fibrillation for 1 to 12 months underwent electrophysiologic testing 10 minutes and 1 hour after cardioversion. At 1 week, 19 patients still in sinus rhythm returned for repeat testing. Reverse remodeling of the effective refractory period was not uniform across the three atrial sites tested. At the lateral right atrium, there was a highly significant increase in the effective refractory period between 10 minutes and 1 hour after cardioversion (drive cycle length 400 ms: 204 ± 17 ms vs 211 ± 20 ms, drive cycle length 550 ms: 213 ± 18 ms vs 219 ± 23 ms, P < 0.001). The effective refractory period at the coronary sinus and distal coronary sinus did not change in the first hour but had increased by 1 week. The corrected sinus node recovery time did not change in the first hour but was shorter at 1 week (606 ± 311 ms vs 408 ± 160 ms, P = 0.009). P wave duration also was shorter at 1 week (135 ± 18 ms vs 129 ± 13 ms, P = 0.04) consistent with increasing atrial conduction velocity. Conclusion: The atrial effective refractory period increases, sinus node function improves, and atrial conduction velocity goes up in the first week after cardioversion of long‐standing atrial fibrillation in humans. Reverse electrical remodeling of the effective refractory period occurs at different rates in different regions of the atrium. (J Cardiovasc Electrophysiol, Vol. 15, pp. 507‐512, May 2004)

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Crossref · 10.1046/j.1540-8167.2004.03217.x

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Authors
RAITT, M. H., KUSUMOTO, W., GIRAUD, G., & MCANULTY, J. H.
Affiliations
  • Oregon Health & Science University (US)
  • Exempla Saint Joseph Hospital (US)
  • Portland VA Medical Center (US)
Corresponding author
RAITT, MERRITT H.
Venue
Journal of Cardiovascular Electrophysiology
Publisher
Wiley
Published
2004-04-30
Volume
15
Issue
5
Pages
507-512
ISSN
  • 1045-3873 (ISSN-L)
  • 1540-8167
OpenAlex
W2066155196
Cited by
87
References
27
Citations by year
2024: 1 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 2 · 2018: 4 · 2017: 9 · 2016: 3 · 2015: 2 · 2014: 2 · 2013: 5 · 2012: 11
FWCI
3.71
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cardiovascular Electrophysiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
Keywords
persistent atrial fibrillation, cardioversion, atrial electrical remodeling, reverse remodeling, atrial effective refractory period, sinus node recovery time, atrial conduction velocity, P-wave duration, coronary sinus, right atrium
MeSH terms
Adaptation, Physiological, Aged, Atrial Fibrillation, Chronic Disease, Electric Countershock, Female, Heart Atria, Heart Conduction System, Humans, Male, Middle Aged, Refractory Period, Electrophysiological, Treatment Outcome, Recovery of Function, Ventricular Remodeling

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