Unique electrophysiological properties of fast‐slow atrioventricular nodal reentrant tachycardia characterized by a shortening of retrograde conduction time via a slow pathway manifested during atrial induction

2020 ◽  
Vol 31 (6) ◽  
pp. 1420-1429 ◽  
Author(s):  
Shuntaro Tamura ◽  
Tadashi Nakajima ◽  
Takashi Iizuka ◽  
Hiroshi Hasegawa ◽  
Takashi Kobari ◽  
...  
Keyword(s):  
Slow Pathway ◽  
Conduction Time ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Electrophysiological Properties ◽  
Retrograde Conduction

P974Electroanatomical mapping system in atrioventricular nodal reentrant tachycardia: anatomy of koch"s triangle and electrophysiological properties of the slow pathway

EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
S Ferretto ◽  
K Brunzin ◽  
K Pettenuzzo ◽  
F Di Pede ◽  
R Nangah Suh
Keyword(s):  
Anatomical Reconstruction ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Positive Correlation ◽  
Electrophysiological Properties ◽  
Procedural Time ◽  
The Mean ◽  
New Generation ◽  
Heron’S Formula

Abstract The substrate for atrioventricular nodal reentrant tachycardia (AVNRT) is well established. The standard fluoroscopy and electrogram-guided slow pathway ablation has been widely confirmed as an efficacious technique. The use of non fluoroscopic electroanatomic mapping (NFEM) in AVNRT ablation allows a detailed analysis of the anatomy of Koch’s triangle and distribution of specific electrograms including His bundle electrogram. The analysis of Koch’s triangle dimension and anatomy is still poorly correlated to the electrophysiological properties of the slow pathway and to anthropomorphic characteristics of the patient. Moreover it is not clear if the use of the NFEM leads to a longer procedural time.  AIM. The aim of our study was to research the presence of a correlation between Koch’s triangle dimension and anatomy and electrophysiological and anthropomorphic characteristics of the patient. We also evaluate if NFEM prolong total procedural time in ablations performed by "new generation" electrophysiologist (who learned AVNRT ablation in the NFEM era).  METHODS. All slow-fast AVRNT ablations executed in 2019 in a single center by two "new generation" electrophysiologist were included. Electrophysiological characteristics of the slow pathway were collected. NavX™ EnSite Precision™ (Abbott, St. Paul, MN, USA) was used in non fluoroscopic procedures to anatomical reconstruction and to analyze Koch’s triangle; distance between effective ablation point and His potential (EA-H), effective ablation point and coronary sinus (EA-CS) and CS dimension were recorded (figure 1). Koch’s triangle area was calculated with Heron’s formula. Total procedural time was recorded to compare fluoroscopic and non fluoroscopic procedures.  RESULTS. A total of 13 NavX™ guided zero-fluoroscopy ablation were included. The mean patients age was of 61.6 ± 12.7 years, 61.5% male, with a mean body mass index (BMI) of 26.7 ± 4.8. The mean Koch’s triangle area was of 142.8 ± 68.9 mm, the mean CS area was of 149.2 ± 77.0 mm. A positive correlation was found between EA-H distance and Koch’s triangle area (r= 0.513, p = 0.008) and EA-H distance and BMI (r = 0.683 p < 0.001). Moreover a positive correlation resulted between AH jump (using programmed atrial stimulation) and EA-H distance (r = 0.783, p < 0.001) and AH jump and Koch’s triangle area (r = 0.586, p <0.001). Comparing NavX™ guided ablation and standard ablation in a similar group of patients (mean age of 57.7 ± 11.4 years, 45% male) no difference was found in total procedural time (97.1 ± 30.3 min with NavX vs 96.4 ± 28.1 min with fluoroscopy, p = 0.927). No complication occurred with both technique.  CONCLUSION. In our study higher BMI were correlated with larger EA-H distance and larger Koch’s triangle area. Patients with longer AH Jump had larger EA-H distance and larger Koch’s triangle area. The use of NFEM showed to have advantages in terms of anatomical precision and fluoroscopy exposure without prolonging procedural time. Abstract Figure 1

Empiric slow‐pathway ablation results for presumed atrioventricular nodal reentrant tachycardia in pediatric patients

2021 ◽  
Author(s):  
Derya Duman ◽  
İlker Ertuğrul ◽  
Işıl Yıldırım Baştuhan ◽  
Hayrettin Hakan Aykan ◽  
Tevfik Karagöz
Keyword(s):  
Pediatric Patients ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Slow Pathway Ablation

Predictors of Acute and Long-Term Success of Slow Pathway Ablation for Atrioventricular Nodal Reentrant Tachycardia: A Single Center Series of 1,419 Consecutive Patients

2011 ◽  
Vol 34 (8) ◽  
pp. 927-933 ◽  
Author(s):  
ALEXANDER FELDMAN ◽  
ALEKSANDR VOSKOBOINIK ◽  
SAURABH KUMAR ◽  
STEVEN SPENCE ◽  
JOSEPH B. MORTON ◽  
...  
Keyword(s):  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Single Center ◽  
Reentrant Tachycardia ◽  
Slow Pathway Ablation

scholarly journals Effects of Partial and Complete Ablation of the Slow Pathway on Fast Pathway Properties in Patients with Atrioventricular Nodal Reentrant Tachycardia

1994 ◽  
Vol 5 (8) ◽  
pp. 645-649 ◽  
Author(s):  
S. ADAM STRICKBERGER ◽  
EMILE DAOUD ◽  
MARK NIEBAUER ◽  
BRIAN D. WILLIAMSON ◽  
K. CHING MAN ◽  
...  
Keyword(s):  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Complete Ablation ◽  
Fast Pathway

Effect of residual slow pathway function on the time course of recurrences of atrioventricular nodal reentrant tachycardia after radiofrequency ablation of the slow pathway

1995 ◽  
Vol 75 (8) ◽  
pp. 628-630 ◽  
Author(s):  
John D. Hummel ◽  
S. Adam Strickberger ◽  
Brian D. Williamson ◽  
K. Ching Man ◽  
Emile Daoud ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Time Course ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Pathway Function

Effect of Slow Pathway Ablation in Atrioventricular Nodal Reentrant Tachycardia on the Electrophysiologic Characteristics of the Inferior Atrial Inputs to the Human Atrioventricular Node

2006 ◽  
Vol 97 (6) ◽  
pp. 860-865 ◽  
Author(s):  
Demosthenes G. Katritsis ◽  
Anton E. Becker ◽  
Kenneth A. Ellenbogen ◽  
Eleftherios Giazitzoglou ◽  
Socrates Korovesis ◽  
...  
Keyword(s):  
Atrioventricular Node ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Slow Pathway Ablation
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