Successful ablation of atypical atrioventricular nodal reentrant tachycardia from a noncoronary sinus of Valsalva.
An 81-year-old man with long RP narrow QRS tachycardia underwent catheter ablation. Ventricular pacing reset the atrial cycle over a retrograde slow pathway, followed by termination of the tachycardia without atrial capture, confirming the diagnosis of fast-slow atrioventricular nodal reentrant tachycardia (AVNRT). The earliest atrial activation during tachycardia was found in the noncoronary sinus of Valsalva, where the first delivery of radiofrequency energy terminated and eliminated the inducibility of the tachycardia, by retrograde conduction block over the slow pathway. This is the first report of a fast-slow AVNRT, with successful ablation of the slow pathway from a noncoronary sinus of Valsalva.
Department of Medicine and Biological Science, Gunma University Graduate School of Medicine.
Yoshiaki
Y
Kaneko
Tadashi
T
Nakajima
Tadanobu
T
Irie
Fumio
F
Suzuki
Masaki
M
Ota
Takafumi
T
Iijima
Mio
M
Tamura
Takashi
T
Iizuka
Shuntaro
S
Tamura
Akihiro
A
Saito
Masahiko
M
Kurabayashi
D000369:Aged, 80 and over; D017115:Catheter Ablation; D006801:Humans; D008297:Male; D012850:Sinus of Valsalva / Q000503:physiopathology*; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000628:therapy*