title: Atrio-ventricular conduction disturbances occurring after strenuous physical effort.
abstract: Two young patients with a-v conduction disturbances occurring in relation with strenuous physical effort are presented. The possible mechanism may be an excessive vagal tone.
mesh_terms: D000293:Adolescent; D005080:Exercise Test; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male; D005082:Physical Exertion