“…If performed the day before surgery, it may improve ventilation and volume control, as well as decrease infection risk, especially spontaneous bacterial peritonitis. In addition, thoracentesis should only be performed in patients with moderate to large pleural effusions, including hepatic hydrothorax, that cause impaired pulmonary function [ 15 ]. Postoperatively, excess intravenous fluid and blood products may cause volume overload and increased portal pressures.…”