[Incidence of inducible supraventricular tachycardia in dysplasia of the right ventricle].
Arrhythmogenic right ventricular dysplasia (ARVD) is classically associated with ventricular tachycardia and the prevalence of supraventricular tachycardia in this condition is not well known. The aim of this study was to observe the response of 20 patients with ARVD to programmed atrial stimulation and compare it with 150 subjects without cardiac disease or spontaneous supraventricular tachycardia. The protocol used 2 atrial extra-stimuli delivered on 3 paced cycles. Programmed atrial stimulation with 1 extrastimulus was repeated after infusion of 20 to 30 micrograms of Isoproterenol. Sustained supraventricular tachycardia could be induced in 13 patients with ARVD (65%) and 17 control subjects (11%) (p < 0.001). It was not possible to distinguish patients with inducible supraventricular tachycardia from those without inducible arrhythmias by electrophysiologic parameters. Isoproterenol facilitated the induction of VT but not supraventricular tachycardia. Three patients with inducible supraventricular tachycardia developed spontaneous atrial fibrillation. In conclusion, there is a relatively high incidence of inducible supraventricular tachycardia in ARVD: Isoproterenol does not facilitate this tachycardia, contrary to ventricular tachycardia.
Brembilla-Perrot
B
B
CHU de Brabois, Vandoeuvre.
Terrier de La Chaise
A
A
Beurrier
D
D
Louis
P
P
Suty-Selton
C
C
Thiel
B
B
D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000150:complications / Q000503:physiopathology*; D002304:Cardiac Pacing, Artificial; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications*; D006352:Heart Ventricles; D006801:Humans; D015994:Incidence; D007545:Isoproterenol; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013617:Tachycardia, Supraventricular / Q000209:etiology*; D016278:Ventricular Function, Right
D007545:Isoproterenol
Incidence du déclenchement des tachyarythmies supraventriculaires dans la dysplasie du ventricule droit.