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Mutual Arrangements of Coronary Blood Vessels within the Right Atrial Appendage Vestibule

Jakub Hołda1, Katarzyna Słodowska1, Marcin Strona2

  • 1HEART-Heart Embryology and Anatomy Research Team, Department of Anatomy, Jagiellonian University Medical College, 31-034 Cracow, Poland.

Journal of Clinical Medicine
|August 27, 2021
PubMed

Insights

The right coronary artery (RCA) is frequently found in the right atrial appendage (RAA) vestibule, often near the endocardium. Understanding these coronary vessels is crucial for safe cardiac procedures.

Area of Science:

  • Cardiovascular Anatomy
  • Cardiac Electrophysiology
  • Interventional Cardiology

Background:

  • Investigating the anatomical relationship of coronary vessels within the right atrial appendage (RAA) vestibule.
  • Understanding the prevalence and spatial arrangement of coronary arteries in the RAA.

Purpose of the Study:

  • To determine the presence and interrelationships of coronary vessels within the RAA vestibule.
  • To analyze the morphometric characteristics of these vessels.

Main Methods:

  • Examination of 200 autopsied human hearts.
  • Cross-sectioning of the RAA vestibule at superior, middle, and inferior isthmuses.

Main Results:

  • The right coronary artery (RCA) was present in 100% of superior RAA isthmuses, with decreasing prevalence in middle (98%) and inferior (93.5%) isthmuses.
  • RCA diameter was consistent across isthmuses (2.6-2.9 mm); its location varied, often near the endocardial surface.
  • The distance of the RCA from the endocardial surface decreased from the superior to the inferior RAA isthmus.

Conclusions:

  • This study provides a detailed analysis of coronary vasculature within the RAA vestibule.
  • Knowledge of these vascular arrangements aids clinicians in performing safer and more effective procedures in the RAA region.
Abstract

Keywords:
ablationcardiac anatomyright atrial appendageright atrial appendage vestibuleright atriumright coronary artery

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