Exercise-Induced Intranodal Atrioventricular Block
Korean Circulation Journal
;
: 698-701, 2012.
Article
in English
| WPRIM
| ID: wpr-89217
ABSTRACT
Exercise-induced atrioventricular (AV) block in patients with normal AV conduction at rest is rare. Herein, we describe the case of a 67-year-old woman with normal 1 1 AV conduction at rest, who developed complete AV block during a treadmill test. Our patient complained of effort-related dizziness and dyspnea, which had been ongoing for 3 months. The patient's physical examination was normal. The resting electrocardiogram showed left anterior fascicular block with a PR interval of 0.19 seconds. The echocardiogram was normal except for mild aortic valve regurgitation. During the treadmill test, the patient developed complete AV block at a sinus rate of 90 beats/min, which was followed by 2 1 AV block associated with dyspnea and dizziness. The patient's coronary angiogram was normal, and the ergonovine provocation test was negative. Electrophysiological studies demonstrated rate-dependent intranodal AV block. The patient received implantation of a permanent dual chamber (DDD) pacemaker and had no further symptoms during the follow-up period.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Aortic Valve
/
Physical Examination
/
Bundle-Branch Block
/
Follow-Up Studies
/
Electrophysiologic Techniques, Cardiac
/
Dizziness
/
Dyspnea
/
Electrocardiography
/
Ergonovine
/
Exercise Test
Type of study:
Observational study
/
Prognostic study
Limits:
Aged
/
Female
/
Humans
Language:
English
Journal:
Korean Circulation Journal
Year:
2012
Type:
Article
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