The behavior of three types of large sinus node arteries with regard to the blood supply of the atrial myocardium.

Autor: Nerantzis CE; Forensic Medical Service of Athens, Athens, Greece., Anninos H; Department of Clinical Therapeutics, 'Alexandra' General Hospital of Athens, School of Medicine, National and Kapodistrian University of Athens, 64 Knossou Str. Gerakas, 15344, Athens, Greece. ekanninos@yahoo.com., Marianou SK; Forensic Medical Service of Athens, Athens, Greece., Pastromas S; Henry Dunant Hospital Center, Athens, Greece.
Jazyk: angličtina
Zdroj: Surgical and radiologic anatomy : SRA [Surg Radiol Anat] 2021 Mar; Vol. 43 (3), pp. 311-316. Date of Electronic Publication: 2020 Nov 22.
DOI: 10.1007/s00276-020-02621-5
Abstrakt: Purpose: We describe angiographic findings of sinus node arteries (SNAs), focusing in the large sinus node artery (LSNA) variants, regarding the blood supply of the SN and atrial myocardium.
Methods: We examined the SN arteries via postmortem angiographic visualization in six hundred hearts derived from victims of various accidents.
Results: The main stem or a branch of the SNA supplied the right atrium (RA) and part of the interatrial septum (IS) in 32% of cases (Group A), one atrium, the IS and a small part of the other atrium (Group B) in 39% and the entire atrial myocardium (LSNAs) (Group C) in 29%. Forty-two percent (42%) of LSNAs were arising from the anterior part of the right coronary artery (RCA) (type 1), 9% from its intermediate part (type 2) and 49% from the posterolateral portion of the left circumflex artery (LCx) (type 3). Type 2 can be injured by surgical procedures, type 3 by interventional ones, while type 1 is not affected by any. The SN area was supplied in Groups A and B by the main stem of SN arteries in 370 cases (62%) and by branches (Br) in 55 (9%). The 175 cases of group C (29%) were supplied only by branches. The clockwise (40% of cases) and counterclockwise rotations (60%) of the SNA around the superior vena cava, concern surgical procedures.
Conclusion: The above findings are essential for every day surgical and interventional procedures.
Databáze: MEDLINE
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