My husband went for hois post surgery checkup. Since he wasn't feeling that well yet, they decided to do a chest X-ray. The next day they called and said there was fluid on his left lung. He was told to stop his warfarin and get an appointment to have the fluid drained off his lung. Two days later he went into AFib. The surgeons office told us to call 911 or go to ER. In ER all kinds of tests were done and he ended up back in the hospital for four days, for the drainage and maybe a cardioversion. After the drainage, they decided to evaluate the AFib on the 19th since it's only been a month since surgery. What are the chances of the fluid returning? Has anyone had it removed? And how did it go? Since he has had cardioversion three different times, he isn't to worried about that. He is feeling better after having the lung drained. One liter was removed.