[Exercise-induced atrioventricular block].
Exercise-induced atrioventricular block in patients with normal atrioventricular conduction at rest is uncommon. Electrophysiologic studies have documented block distal to the atrioventricular node in these patients. Implantation of a permanent pacemaker is recommended because of a high incidence of subsequent symptomatic block. We report three symptomatic patients with exercise-induced atrioventricular block. Two patients showed a bundle branch block in the baseline electrocardiogram, suggesting a distal location of the block. In the remainder, with a normal QRS, the electrophysiologic study revealed AV block within the His bundle in response to atrial pacing.
Barbero
J M
JM
Servicio de Cardiología, Hospital Universitario de Getafe, Madrid.
Goicolea
A
A
López Gil
M
M
Grande
J M
JM
García-Cosío
F
F
D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis / Q000209:etiology; D004562:Electrocardiography; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged
Bloqueo auriculoventricular inducido por el ejercicio.