Volume : VII, Issue : VII, July - 2017

Anatomical variations of Pulmonary veins at the Hilum of the Lung

Dr. Shabana Sultana, Dr. Mrudula Chandrupatla

Abstract :

 Pulmonary veins carry oxygenated blood from lungs to left atrium . Normally from each lung there are two pulmonary veins. They open into the smooth part of the left atrium. Variations in number of these veins are quite common. They form an important source of ectopic atrial electrical activity, frequently initiating paroxysms of atrial fiillation. Thus, detailed knowledge of pulmonary venous anatomy and relationships between the pulmonary veins and the left atrium is important during mapping and ablation procedures. T ectopic beats could arise from these anomalous veins. For these reasons, cross–sectional imaging ,magnetic resonance [MR] imaging or computed tomography [CT]) may be performed prior to radiofrequency ablation to map the pattern of pulmonary venous drainage and to identify variant veins. The present study was undertaken to evaluate the incidence of different draining patterns of the right and left pulmonary veins at the hilum by dissecting the human fixed cadaveric lungs. In 54% of cases, the right superior lobar vein and right middle lobar vein were found to be united together to form the right superior pulmonary vein. In contrast to this, in 12% of cases, the right superior lobar vein, the right middle lobar vein, and the right inferior lobar vein drained into a common vein forming the right single unilateral central pulmonary vein while in 27% of cases, the right superior lobar vein, right middle lobar vein, and right inferior lobar vein drained separately. Remaining 7% have shown different anatomical variations.

     Approximately 70% of the general population have four pulmonary veins: right superior and inferior pulmonary veins and left superior and inferior pulmonary veins. The purpose of our study was to evaluate the frequency of variability in pulmonary venous anatomy and to classify the various drainage patterns of the pulmonary veins.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Dr.Shabana Sultana, Dr. Mrudula Chandrupatla, Anatomical variations of Pulmonary veins at the Hilum of the Lung, INDIAN JOURNAL OF APPLIED RESEARCH : Volume‾7 | Issue‾7 | July‾2017

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