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[Exercise-induced atrioventricular block. Significance of the ischemic component. Report of 4 new cases]
J R Rumoroso1, P M Montes Orbe, J C Cembellín
1Servicio de Cardiología, Hospital de Cruces, Baracaldo, Vizeaya.
Revista Espanola De Cardiologia
|April 1, 1997
Insights
Exercise-induced atrio-ventricular block can occur during treadmill tests. In some cases, ischemia caused the block, which resolved after coronary artery bypass grafting.
Area of Science:
- Cardiology
- Electrophysiology
- Sports Medicine
Background:
- Atrio-ventricular block (AVB) is a condition affecting heart rhythm.
- Exercise can unmask underlying cardiac conditions.
Observation:
- Four new cases of exercise-induced atrio-ventricular block were observed during treadmill exercise testing.
- The conduction disturbance manifested during physical exertion.
Findings:
- Ischemia was identified as the underlying mechanism in two of the reported cases.
- Conduction disturbances resolved in these patients following coronary artery bypass grafting.
- The study reviews existing literature on exercise-induced AVB.
Implications:
- Coronary artery disease should be considered in the etiology of exercise-induced AVB.
- Coronary revascularization may be an effective management strategy for specific cases.
- Understanding the natural history and management of this condition is crucial for patient care.
Abstract:
We report four new cases of exercise-induced atrio-ventricular block (appearing during treadmill exercise testing). The mechanism was ischemia in two patients and the conduction disturbance disappeared after coronary artery bypass grafting. The literature on this matter is reviewed. Also the etiology, the natural history and management are discussed in these cases.