[An unusual case of ectopic atrial tachycardia: triggered activity as an arrhythmogenic mechanism].
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.
Ducceschi
V
V
Cattedra di Cardiologia, Istituto Medico-Chirurgico di Cardiologia, Seconda Università degli Studi, Napoli.
Sarubbi
B
B
Briglia
N
N
Manzo
G
G
Esposito
R
R
Mayer
M S
MS
Santangelo
L
L
Iacono
A
A
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
D000319:Adrenergic beta-Antagonists; D008790:Metoprolol