title: [Infrequent electrocardiographic changes during exercise stress test in a patient with Brugada's syndrome].
abstract: 38 year old patient with a syncope history and family background of sudden death had an electrocardiogram compatible with the "Brugada Syndrome". When an exercise stress testing with Bruce protocol was done, we found that during the effort phase and at maximum effort, contrary to a ST segment normalization, a discreet increase of the ST segment elevation of 2 mm in V1 and V2 occurred. During recovery phase a decrease in the ST segment elevation was observed, at a normal level as before the test.
authors.affiliation: Clínica de Arritmias, Hospital de Especialidades del CMN La Raza, IMSS, Seris y Zaachila S/N Col. La Raza Azcapotzalco C.P. 02990 México D.F. mylton@yahoo.com
authors.forename: Milton E
authors.initials: ME
authors.lastname: Guevara-Valdivia
authors.forename: Alfredo
authors.initials: A
authors.lastname: de Micheli
authors.forename: Pedro
authors.initials: P
authors.lastname: Iturralde
authors.forename: Luis
authors.initials: L
authors.lastname: Colín
authors.forename: Manlio F
authors.initials: MF
authors.lastname: Márquez
authors.forename: Jesús A
authors.initials: JA
authors.lastname: González-Hermosillo
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000503:physiopathology*; D016757:Death, Sudden, Cardiac; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D013577:Syndrome; D017180:Tachycardia, Ventricular / Q000503:physiopathology