title: [An unusual case of ectopic atrial tachycardia: triggered activity as an arrhythmogenic mechanism].
abstract: We report a rare case of ectopic atrial tachycardia induced by ergometric stress test whose arrhythmogenic mechanism, after transesophageal electrophysiological study, seemed to be triggered activity. The patient was successfully treated with a beta-blocker (metoprolol), confirming the importance of autonomic modulation in the genesis of arrhythmias caused by afterdepolarizations.
authors.affiliation: Cattedra di Cardiologia, Istituto Medico-Chirurgico di Cardiologia, Seconda Università degli Studi, Napoli.
authors.forename: V
authors.initials: V
authors.lastname: Ducceschi
authors.forename: B
authors.initials: B
authors.lastname: Sarubbi
authors.forename: N
authors.initials: N
authors.lastname: Briglia
authors.forename: G
authors.initials: G
authors.lastname: Manzo
authors.forename: R
authors.initials: R
authors.lastname: Esposito
authors.forename: M S
authors.initials: MS
authors.lastname: Mayer
authors.forename: L
authors.initials: L
authors.lastname: Santangelo
authors.forename: A
authors.initials: A
authors.lastname: Iacono
mesh_terms: D000319:Adrenergic beta-Antagonists; D000328:Adult; D004562:Electrocardiography; D005080:Exercise Test / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008790:Metoprolol / Q000627:therapeutic use; D013612:Tachycardia, Ectopic Atrial / Q000188:drug therapy / Q000209:etiology / Q000503:physiopathology
chemical_list: D000319:Adrenergic beta-Antagonists; D008790:Metoprolol