EVALUATION OF THE FREQUENCY OF EACH VARIATION IN PULMONARY VENOUS ARCHITECTURE ON CT AS WELL AS THE PATTERNS OF PULMONARY VENOUS DRAINAGE TO THE LEFT ATRIUM

Abstract

Background: Important sources of ectopic atrial electric activity, especially in patients with atrial 
fibrillation, include evaluating the patterns of pulmonary venous drainage to the left atrium and the 
frequency of each variable in pulmonary venous architecture on CT drainage sites in pulmonary veins. 
Variations in the pulmonary veins' anatomy are frequently seen. These differences can be crucial, 
especially when it comes to the preoperative planning of pulmonary and cardiac surgery.