Superior‐type fast‐slow atrioventricular nodal reentrant tachycardia with a 2:1 atrioventricular block

2019 ◽  
Vol 30 (9) ◽  
pp. 1696-1698
Author(s):  
Yoshiaki Kaneko ◽  
Tadashi Nakajima ◽  
Shuntaro Tamura ◽  
Masahiko Kurabayashi
Keyword(s):  
Atrioventricular Block ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Superior Type

Implications of 2:1 atrioventricular block during typical atrioventricular nodal reentrant tachycardia

2007 ◽  
Vol 19 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Kiyoshi Otomo ◽  
Kazuhiro Suyama ◽  
Hideo Okamura ◽  
Takashi Noda ◽  
Kazuhiro Satomi ◽  
...  
Keyword(s):  
Atrioventricular Block ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia

scholarly journals Superior-Type Fast-Slow Atrioventricular Nodal Reentrant Tachycardia Phenotype Mimicking the Slow-Fast Type

2020 ◽  
Vol 13 (11) ◽  
Author(s):  
Yoshiaki Kaneko ◽  
Tadashi Nakajima ◽  
Shuntaro Tamura ◽  
Hiroshi Hasegawa ◽  
Takashi Kobari ◽  
...  
Keyword(s):  
Cycle Length ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Common Pathway ◽  
His Bundle ◽  
Overdrive Pacing ◽  
Atrial Activation ◽  
The Right ◽  
Superior Type

Background: Superior-type fast-slow (sup-F/S-) atrioventricular nodal reentrant tachycardia (AVNRT) is a rare AVNRT variant using a superior slow pathway (SP) as the retrograde limb. Its intracardiac appearance, characterized by a short atrio-His (AH) interval and the earliest site of atrial activation in the His-bundle, is an initial indicator for making a diagnosis. Methods: Among 22 consecutive patients with sup-F/S-AVNRT, 3 (age, 68–81 years) patients had an apparent slow-fast (S/F-) AVNRT characterized by a long AH interval and the earliest site of atrial activation in or superior to the His-bundle region (tachy-long-AH). Results: The diagnosis of sup-F/S-AVNRT was based on the standard criteria in 2 patients and on the occurrence of Wenckebach-type atrioventricular block during tachycardia, which was attributable to a block at the lower common pathway (LCP) below the circuit of the AVNRT, detected owing to the lower common pathway potentials, in one patient. As with the typical S/F-AVNRT, tachy-long-AH was induced after a jump in the AH interval. In contrast to typical S/F-AVNRT, fluctuation in the ventriculoatrial interval was observed during the tachy-long-AH. Ventricular overdrive pacing was unable to entrain or terminate the tachy-long-AH. Moreover, the tachy-long-AH reciprocally transited to/from sup-F/S-AVNRT spontaneously or was triggered by ventricular contractions while the atrial cycle length and earliest site of atrial activation remained unchanged. Both tachycardias were cured by ablation at a single site in the right-side para-Hisian region of 2 patients and the noncoronary aortic cusp of one patient. Collectively, the essential circuit of both tachycardias was identical, and the tachy-long-AH was diagnosed as another phenotype of sup-F/S-AVNRT accompanied by sustained antegrade conduction via another bystander slow pathway breaking through the His-bundle owing to the repetitive antegrade block at the lower common pathway, thus representing a long AH interval during the ongoing sup-F/S-AVNRT. Conclusions: An unknown sup-F/S-AVNRT phenotype exists that apparently mimics the typical S/F-AVNRT and is also an unknown subtype of apparent S/F-AVNRT.

scholarly journals Atrioventricular Block During Atrioventricular Nodal Reentrant Tachycardia Is not Always Benign

2003 ◽  
Vol 44 (5) ◽  
pp. 789-797 ◽  
Author(s):  
Takashi Tokano ◽  
Yasuro Nakata ◽  
Akitoshi Sasaki ◽  
Yoriaki Mineda ◽  
Masataka Sumiyoshi ◽  
...  
Keyword(s):  
Atrioventricular Block ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia
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