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- Title
The optimal slow pathway ablation site in atrioventricular nodal reentrant tachycardia cases with an inferiorly located His bundle.
- Authors
Takizawa, Ryoya; Nakatani, Yosuke; Take, Yutaka; Kimura, Kohki; Haraguchi, Yumiko; Sasaki, Wataru; Kishi, Shohei; Yoshimura, Shingo; Sasaki, Takehito; Goto, Koji; Miki, Yuko; Kaseno, Kenichi; Nakamura, Kohki; Naito, Shigeto
- Abstract
Introduction: The optimal slow pathway (SP) ablation site in cases with an inferiorly located His bundle (HIS) remains unclear. Methods and Results: In 45 patients with atrioventricular nodal reentrant tachycardia, the relationship between the HIS location and successful SP ablation site was assessed in electroanatomical maps. We assessed the location of the SP ablation site relative to the bottom of the coronary sinus ostium in the superior‐to‐inferior (SPSI), anterior‐to‐posterior (SPAP), and right‐to‐left (SPRL) directions. The HIS location was assessed in the same manner. The HIS location in the superior‐to‐inferior direction (HISSI), SPSI, SPAP, and SPRL were 17.7 ± 6.4, 1.7 ± 6.4, 13.6 ± 12.3, and −1.0 ± 13.0 mm, respectively. The HISSI was positively correlated with SPSI (R2 = 0.62; P <.01) and SPAP (R2 = 0.22; P <.01), whereas it was not correlated with SPRL (R2 = 0.01; P =.65). The distance between the HIS and SP ablation site was 17.7 ± 6.4 mm and was not affected by the location of HIS. The ratio of the amplitudes of atrial and ventricular potential recorded at the SP ablation site did not differ between the high HIS group (HISSI ≥ 13 mm) and low HIS group (HISSI < 13 mm) (0.10 ± 0.06 vs. 0.10 ± 0.06; P =.38). Conclusion: In cases with an inferiorly located HIS, SP ablation should be performed at a lower and more posterior site than in typical cases.
- Subjects
PEARSON correlation (Statistics); T-test (Statistics); STATISTICAL significance; BODY surface mapping; SUPRAVENTRICULAR tachycardia; RETROSPECTIVE studies; CHI-squared test; DESCRIPTIVE statistics; HEART conduction system; HIS bundle; CATHETER ablation; DATA analysis software; VENTRICULAR septum; ATRIOVENTRICULAR node; REGRESSION analysis
- Publication
Pacing & Clinical Electrophysiology, 2024, Vol 47, Issue 4, p525
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/pace.14960