Cited by 28Cardiac electrophysiology and arrhythmiasCardiac pacing and defibrillation studiesCardiac Arrhythmias and Treatments

Exercise-induced complete heart block in a patient with chronic bifascicular block

Byrne, John M., Marais, H. John, Cheek, Gregory A.·1994·Journal of Electrocardiology

Abstract

Heart block induced by exercise or associated with symptomatic, chronic bifascicular block can progress to high-grade atrioventricular (AV) block and sudden death. The authors describe a case of exercise-induced AV block in a patient with chronic bifascicular block. Thirty seconds of ventricular asystole were observed during exercise treadmill testing. Myocardial ischemia was ruled out, and the cause was determined to be distal AV nodal block. The pathophysiology, diagnosis, and treatment of distal AV nodal block are reviewed. The role of exercise treadmill testing and electrophysiologic studies in distal AV block are outlined in a diagnostic and therapeutic strategy.

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Registry

Crossref · 10.1016/s0022-0736(05)80273-0

Cites

11 of 11 references verified0 citation errors · 0 not checkable

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  • Tachycardia-related exercise-induced second- and third-degree AV block predicts progression to permanent AV block.

    “and predicts progression to permanent AV block. 254,255”
  • In tachycardia-related exercise-induced AV block, a resting ECG frequently shows intraventricular conduction abnormalities, but cases with a normal resting ECG have also been described.

    “A resting ECG frequently shows intraventricular conduction abnormalities, 253,254 but cases with a normal resting ECG have also been described. 256,257”

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Authors
Byrne, J. M., Marais, H. J., & Cheek, G. A.
Affiliations
Loma Linda University (US)
Corresponding author
Byrne, John M.
Venue
Journal of Electrocardiology
Publisher
Elsevier BV
Published
1994-10
Volume
27
Issue
4
Pages
339-342
ISSN
0022-0736 (ISSN-L)
OpenAlex
W2025709902
Cited by
28
References
11
Citations by year
2026: 1 · 2024: 2 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 3 · 2018: 2 · 2013: 1
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Electrocardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
Keywords
complete heart block, bifascicular block, atrioventricular block, ventricular asystole, treadmill exercise testing, electrophysiological study, sudden cardiac death, pathophysiology
MeSH terms
Aged, Bundle-Branch Block, Chronic Disease, Electrocardiography, Exercise Test, Heart Arrest, Heart Block, Humans, Male, Syncope, Exercise, Exercise Tolerance

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