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Relationship between atrial fibrillatory rate based on analysis of a modified base-apex surface electrocardiogram analysis and the results of transvenous electrical cardioversion in horses with spontaneous atrial fibrillation

Van Steenkiste, Glenn ; Carlson, Jonas LU orcid ; Decloedt, Annelies ; Vera, Lisse ; Buhl, Rikke ; Platonov, Pyotr G. LU and van Loon, Gunther (2021) In Journal of Veterinary Cardiology 34. p.73-79
Abstract

Objectives: To compare the atrial fibrillatory rate (AFR) derived from a local right atrial intracardiac recording (RA-FR) and from a single-lead surface electrocardiogram (ECG) during atrial fibrillation (AF) and to evaluate the correlation with transvenous electrical cardioversion (TVEC) threshold (in Joules), number of shocks and cardioversion success rate in horses. Animals: ECGs and clinical records of horses with AF treated by TVEC. Horses were included if a simultaneous recording of the right atrial intracardiac electrogram and a modified base-apex ECG were available. Materials and methods: Clinical records of horses with AF treated by TVEC were reviewed. Three-minute long episodes of simultaneous electrograms and surface ECG... (More)

Objectives: To compare the atrial fibrillatory rate (AFR) derived from a local right atrial intracardiac recording (RA-FR) and from a single-lead surface electrocardiogram (ECG) during atrial fibrillation (AF) and to evaluate the correlation with transvenous electrical cardioversion (TVEC) threshold (in Joules), number of shocks and cardioversion success rate in horses. Animals: ECGs and clinical records of horses with AF treated by TVEC. Horses were included if a simultaneous recording of the right atrial intracardiac electrogram and a modified base-apex ECG were available. Materials and methods: Clinical records of horses with AF treated by TVEC were reviewed. Three-minute long episodes of simultaneous electrograms and surface ECG during AF were selected for analysis and compared using Bland-Altman analysis. The mean RA-FR was measured from the deflections on the intracardiac electrogram, while the AFR was extracted from the surface ECG using spatiotemporal QRS and T-wave cancellation. Results: Seventy-three horses satisfied the inclusion criteria. The mean difference between RA-FR and AFR was −13 fibrillations per minute (fpm), the 95% limits of agreement were between −66 and 40 fpm, and there was a moderate (ρ = 0.65) correlation between RA-FR and AFR (p < 0.001). Neither RA-FR nor AFR appeared to influence the TVEC cardioversion threshold or the number of TVEC shocks applied. Conclusions: The AFR may allow non-invasive long-term monitoring of AF dynamics. Neither RA-FR nor AFR could be used to predict the minimal defibrillation threshold for TVEC.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arrhythmia, Atrial electrophysiology, Atrial fibrillation, Atrial fibrillation cycle length, Transvenous electrical cardioversion
in
Journal of Veterinary Cardiology
volume
34
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85101386052
  • pmid:33611234
ISSN
1760-2734
DOI
10.1016/j.jvc.2021.01.001
language
English
LU publication?
yes
id
59732e73-e712-4080-a685-79181a58fdef
date added to LUP
2021-03-08 12:40:29
date last changed
2024-05-02 04:10:11
@article{59732e73-e712-4080-a685-79181a58fdef,
  abstract     = {{<p>Objectives: To compare the atrial fibrillatory rate (AFR) derived from a local right atrial intracardiac recording (RA-FR) and from a single-lead surface electrocardiogram (ECG) during atrial fibrillation (AF) and to evaluate the correlation with transvenous electrical cardioversion (TVEC) threshold (in Joules), number of shocks and cardioversion success rate in horses. Animals: ECGs and clinical records of horses with AF treated by TVEC. Horses were included if a simultaneous recording of the right atrial intracardiac electrogram and a modified base-apex ECG were available. Materials and methods: Clinical records of horses with AF treated by TVEC were reviewed. Three-minute long episodes of simultaneous electrograms and surface ECG during AF were selected for analysis and compared using Bland-Altman analysis. The mean RA-FR was measured from the deflections on the intracardiac electrogram, while the AFR was extracted from the surface ECG using spatiotemporal QRS and T-wave cancellation. Results: Seventy-three horses satisfied the inclusion criteria. The mean difference between RA-FR and AFR was −13 fibrillations per minute (fpm), the 95% limits of agreement were between −66 and 40 fpm, and there was a moderate (ρ = 0.65) correlation between RA-FR and AFR (p &lt; 0.001). Neither RA-FR nor AFR appeared to influence the TVEC cardioversion threshold or the number of TVEC shocks applied. Conclusions: The AFR may allow non-invasive long-term monitoring of AF dynamics. Neither RA-FR nor AFR could be used to predict the minimal defibrillation threshold for TVEC.</p>}},
  author       = {{Van Steenkiste, Glenn and Carlson, Jonas and Decloedt, Annelies and Vera, Lisse and Buhl, Rikke and Platonov, Pyotr G. and van Loon, Gunther}},
  issn         = {{1760-2734}},
  keywords     = {{Arrhythmia; Atrial electrophysiology; Atrial fibrillation; Atrial fibrillation cycle length; Transvenous electrical cardioversion}},
  language     = {{eng}},
  pages        = {{73--79}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Veterinary Cardiology}},
  title        = {{Relationship between atrial fibrillatory rate based on analysis of a modified base-apex surface electrocardiogram analysis and the results of transvenous electrical cardioversion in horses with spontaneous atrial fibrillation}},
  url          = {{http://dx.doi.org/10.1016/j.jvc.2021.01.001}},
  doi          = {{10.1016/j.jvc.2021.01.001}},
  volume       = {{34}},
  year         = {{2021}},
}