Fluid collections detected by ultrasound following uncomplicated colorectal surgery

The aim of the study was to assess the incidence and site of intraperitoneal fluid collections following uncomplicated colorectal surgery and to identify factors relating to the presence of such collections. 38 patients (22 males) with a mean age of 67 years (range 38-85 years) undergoing uncomplicated colorectal procedures were studied prospectively. Patients underwent abdominal and pelvic ultrasound on Day 3 and Day 7 following surgery. The number, site and volume of collections were recorded. Ultrasound-detected fluid collections were present in 26% on Day 3 and 25% on Day 7 following laparotomy. The presence of a collection was not related to the amount of residual volume after peritoneal lavage with normal saline prior to operative closure, to intraoperative blood loss or to the presence of drains. The right upper quadrant was the commonest site of intraperitoneal collections. In the absence of additional clinical signs, the presence of such collections is not an indication for intervention.