Exercise-induced Atrioventricular Block with Coronary Artery Stenosis that Appeared Five Years after Bypass Surgery

A 68-year-old man with a history of coronary artery bypass surgery was referred to our hospital because of pre-syncope on effort. During a treadmill exercise electrocardiogram test, the patient developed advanced atrioventricular block associated with dizziness. Coronary angiography revealed signifi...

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Bibliographic Details
Published in:Internal Medicine 2018/02/01, Vol.57(3), pp.363-366
Main Authors: Yamazaki, Shinya, Kato, Taku, Ushimaru, Shunpei, Yokoi, Hirokazu, Mani, Hiroki
Format: Article
Language:English
Subjects:
Angiography
Cardiac arrhythmia
Cardiovascular disease
Case Report
Coronary artery
coronary artery bypass surgery
Coronary artery disease
Coronary vessels
Drug delivery
EKG
Electrocardiography
exercise-induced atrioventricular block
Heart diseases
Heart surgery
Implants
Internal medicine
Ischemia
percutaneous coronary intervention
Stenosis
Stents
Syncope
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Summary:A 68-year-old man with a history of coronary artery bypass surgery was referred to our hospital because of pre-syncope on effort. During a treadmill exercise electrocardiogram test, the patient developed advanced atrioventricular block associated with dizziness. Coronary angiography revealed significant stenosis of the right coronary artery, which had not existed at the time of the bypass surgery. We implanted drug-eluting stents in the stenotic lesion, and an exercise test showed resolution of the atrioventricular block. Exercise-induced atrioventricular block is rare, and it is necessary to distinguish it from ischemic heart disease, especially in patients with a history of coronary artery disease.
ISSN:0918-2918
1349-7235
DOI:10.2169/internalmedicine.9398-17