title: Orthostatic and exercise-induced advanced nodal atrioventricular block.
abstract: A 69-year-old woman was referred for asthenia and dizziness when walking in the last two months. No clinical abnormalities were found, and sinus rhythm was present when lying down. On orthostatism and walking, advanced AV block developed. Atropine and isoproterenol ameliorated the AV conduction abnormality, suggesting a nodal block. The patient remained asymptomatic after pacemaker implantation.
authors.affiliation: Servei de Cardiologia, Centre Hospitalari-Unitat Coronària, Manresa, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Reig
authors.forename: E
authors.initials: E
authors.lastname: Domingo
authors.forename: J
authors.initials: J
authors.lastname: Reguant
authors.forename: J
authors.initials: J
authors.lastname: Corrons
mesh_terms: D000368:Aged; D001285:Atropine; D004562:Electrocardiography; D015444:Exercise; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D007545:Isoproterenol; D010138:Pacemaker, Artificial; D011187:Posture
chemical_list: D001285:Atropine; D007545:Isoproterenol