VARIOUS PATTERNS OF PULMONARY VEINS OPEN ING IN THE LEFT ATRIUM OF HEART : A CLINICAL INSIGHT

Simriti a, Demonstrator , Department of Anatomy, Govt. Medical college Jammu, J & K India., Rekha a, Demonstrator , Department of Anatomy, Govt. Medical college Jammu, J & K India.
2018 International Journal of Advanced Research  
Pulmonary veins carry oxygenated blood from lungs to the left atrium of heart. The four pulmonary veins open into the superior posterolateral surfaces of the left atrium, two on each side. This typical arrangement is present in 20-60% of the population. The present study was conducted on thirty hearts taken from embalmed male cadavers which were kept for dissection purpose in Government Medical College Jammu. 11(36.66%) hearts showed variations in the pattern of pulmonary veins opening into
more » ... ns opening into left atrium out of total hearts studied. The variations in both right and left pulmonary veins were observed in ten hearts (33.33%). Variatons in right pulmonary vein were seen in 10(33.33%) whereas left sided pulmonary veins it was in 11(36.6%) hearts. Variations in the pulmonary veins can be explained on the embryological basis, as these veins develop as a common outgrowth from dorsal atrial wall. As the atria grows, these pulmonary veins get incorporated into the wall of atrium. Thus four separate openings are seen; two on each side of left atrium. Thoracic surgeons should be aware of these variations and meticulous intraoperative confirmation of pulmonary vein anatomy is required while using endoscopic devices. Copy Right, IJAR, 2018,. All rights reserved. ...................................................................................................................... Introduction:-Pulmonary veins carry oxygenated blood from lungs to the left atrium of heart. The four pulmonary veins open into the superior posterolateral surfaces of the left atrium, two on each side. This typical arrangement is present in 20-60% of the population. A common variation includes the presence of a short or long left common venous trunk and multiple pulmonary veins on the right. The right pulmonary veins travel posterior to their respective venae cavae. Their orifices are smooth and oval, the left pair frequently opening via a common channel (Gray H, 2000) The knowledge about this variation is useful while performing surgeries on left atrium. These variations gain significance in isolation for radiofrequency ablation as a treatment for atrial fibrillation, interventional radiologists and thoracic surgeons before performing procedures which directly or indirectly involve pulmonary veins (Archana goel,et al, 2017) . Preprocedural imaging of left atrium and pulmonary veins can offer safety during interventional procedures (Z. Aslı et al, 2014). Earlier, it was considered that the variations in the number and course of pulmonary veins were rare and they were confined only to few case reports (Alfke H et al, 1995) . Recently, however, it has been found that variations in pulmonary venous anatomy were seen in 36% of patients (Marom EM et al,2004. It was also observed that it is one of the aetiologies for ectopic heart beats (Tsao HM et al, 2001) . The major sources
doi:10.21474/ijar01/7817 fatcat:lf534cckurgphajomu2xqc4bye