Pleural effusions following coronary artery
bypass grafting (CABG) have been reported in 65%–89% of the cases. The majority of pleural effusions are left-sided, of little significance, and resolve spontaneously. Most of these effusions develop as a consequence of the surgical procedure itself ("nonspecific pleural effusions") and follow a generally benign course.worrisome effusions are -large to moderate in size, associated with breathlesness, and or blood spitting(hemoptysis
).Intake of fluid has no role in development of pleural effusion.