PURPOSE: The purpose of the study was to examine the anatomical variations in the blood supply to the sinus node. METHODS: Gross anatomical examination and angiographic evaluation were performed in 400 human hearts derived from victims of various accidents. RESULTS: The sinus node artery was a branch of the right coronary artery in 245 cases, the left circumflex in 147 cases, and both coronary arteries in 8 cases. In one subject, two sinus node arteries were found to arise from the left circumflex artery, a finding never reported before. CONCLUSIONS: Anatomic and postmortem angiographic findings of a previously unreported case where the sinus node is perfused by two sinus node arteries originating from the left circumflex coronary artery are demonstrated. Knowledge of this anatomical variation is useful for anatomists and of clinical significance for the interventional cardiologists and mainly for the cardiac surgeons in planning the surgical procedures.
PURPOSE: The purpose of the study was to examine the anatomical variations in the blood supply to the sinus node. METHODS: Gross anatomical examination and angiographic evaluation were performed in 400 human hearts derived from victims of various accidents. RESULTS: The sinus node artery was a branch of the right coronary artery in 245 cases, the left circumflex in 147 cases, and both coronary arteries in 8 cases. In one subject, two sinus node arteries were found to arise from the left circumflex artery, a finding never reported before. CONCLUSIONS: Anatomic and postmortem angiographic findings of a previously unreported case where the sinus node is perfused by two sinus node arteries originating from the left circumflex coronary artery are demonstrated. Knowledge of this anatomical variation is useful for anatomists and of clinical significance for the interventional cardiologists and mainly for the cardiac surgeons in planning the surgical procedures.
Authors: Jens Vikse; Brandon Michael Henry; Joyeeta Roy; Piravin Kumar Ramakrishnan; Wan Chin Hsieh; Jerzy A Walocha; Krzysztof A Tomaszewski Journal: PLoS One Date: 2016-02-05 Impact factor: 3.240