I know very little about cardiac care (and I've never done hospital nursing) but I have a few questions google cannot answer... I thought why not try here ...Is the chest tube used post CABG the same type they use for a chest tube when they relieve pleural effusion? I'm assuming it is the same idea so.. that's why I really don't know. Has anyone had to leave a chest tube in for more than the 24-48 hour timeframe (post CABG) due to continued drainage? I'm going to post in another forum but may as well continue my questions for anyone who knows more. If there is low urinary output for a few days leading to no urinary output (due to kidney failure) fluid builds in the body.. would this cause abdominal swelling and/or epigastric pain if pleural effusion is not relieved?? Where does all this fluid go if it is not coming out via GI/GU system?