Right Orientation of the Openings of the Pulmonary Veins Free of Vessels

Description

Right-sided orientation frames the posterior wall of the left atrium, where the ostia of the pulmonary veins are arranged in two paired openings, superior and inferior. The right superior pulmonary vein opening sits superolateral to the right inferior pulmonary vein opening, with the left-sided ostia positioned contralaterally and separated by the smooth atrial wall between the venous entries. Surrounding endocardium appears free of intraluminal vessels, keeping attention on the luminal contours and their spacing. Posterior left atrial venous anatomy is the map for atrial fibrillation work. Catheter ablation targets electrical triggers at the pulmonary vein antra, and the distance between adjacent ostia influences lesion sets, risk of pulmonary vein stenosis, and the likelihood of leaving gaps along the posterior wall. Surgeons also reference this arrangement during left atriotomy and when planning mitral valve exposure, because the pulmonary venous entries lie immediately posterior to the interatrial septum and superior to the mitral annulus. Small details matter. Use this artwork for cardiothoracic anatomy teaching in gross anatomy and cardiovascular blocks, for electrophysiology lectures on pulmonary vein isolation, and for publisher figures explaining posterior left atrial landmarks without distracting vascular branches. Anatomical accuracy verified by SciePro's Medical Advisory Board.