Comprehensive assessment of Mahaim accessory pathways' anatomic distribution. Issue 1 (January 2022)

• Record Type: Journal Article
• Authors: Gormel, Suat; Yasar, Salim; Yildirim, Erkan; Asil, Serkan; Baris, Veysel Ozgur; Gokoglan, Yalcın; Celik, Murat; Yuksel, Uygar Cagdas; Vurgun, Veysel Kutay; Kabul, Hasan Kutsi; Kose, Sedat
• Is Part Of: Journal of international medical research. Volume 50:Issue 1(2022)
• Publication Date: 2022-01
• Subjects: Accessory pathway -- Mahaim -- supraventricular tachycardia -- electrophysiology -- ablation -- anatomic distribution; Medicine -- Periodicals; Pharmacology -- Periodicals; 610.5
• DOI: 10.1177/03000605211069751
• Languages: English
• ISSNs: 0300-0605

Abstract

Objective: To present the authors' experience of Mahaim-type accessory pathways (MAPs), focusing on anatomic localizations. Methods: Data from consecutive patients who underwent electrophysiological study (EPS) for MAP ablation in two tertiary centres, between January 1998 and June 2020, were retrospectively analysed. Results: Of the 55 included patients, 27 (49.1%) were male, and the overall mean age was 29.5 ± 11.6 years (range, 12–66 years). MAPs were ablated at the tricuspid annulus in 43 patients (78.2%), mitral annulus in four patients (7.3%), paraseptal region in three patients (5.5%), and right ventricle mid-apical region in five patients (9.1%). Among 49 patients who planned for ablation therapy, the success rate was 91.8% (45 patients). Conclusion: MAPs were most often ablated at the lateral aspect of the tricuspid annuli, sometimes at other sides of the tricuspid and mitral annuli, and infrequently in the right ventricle. The M potential mapping technique is likely to be a useful target for ablation of MAPs.