Abstract

Abstract Aim Surgical drains are widely utilised in Gastrointestinal Surgery to prevent intra-abdominal collections and identify post-operative complications. Surgical drain monitoring ranges from simple output measurements through to specific analysis for constituents such as amylase. This systematic review aimed to determine whether surgical drain monitoring can detect post-operative complications and impact on patient outcomes. Method A systematic review was performed, and the following databases searched between 02/03/20 and 26/04/20: MEDLINE, EMBASE, The Cochrane Library and Clinicaltrials.gov. All studies describing surgical drain monitoring of output and content in adult patients undergoing gastrointestinal surgery were considered. Other invasive methods of intra-abdominal sampling were excluded. Results The search returned 396 articles. Following abstract review, 383 were excluded and 13 articles were included for full review. The studies were classified according to speciality: Oesophagogastric (1), Pancreatic (6), Hepatobiliary (2), Colorectal (3) and Emergency General Surgery (1). Post-operative monitoring of amylase and bilirubin decreased the incidence of post-operative complications (pancreatic fistulas, intra-abdominal infections, surgical site infections), length of stay and mortality rate in Pancreatic and Hepatobiliary Surgery. Testing of drain contents following Colorectal Surgery can aid anastomotic leak and the detection of peritonitis, however this did not confer any improvement in patient outcome. Surgical drain monitoring did not improve patient outcomes in Oesophagogastric Surgery. Conclusions Surgical drain monitoring has established advantages in the post-operative care for patients undergoing Gastrointestinal Surgery. Enhanced surgical drain monitoring involving the testing of drain amylase, bilirubin, lactate, and cytokines may improve detection of complications in the immediate post-operative period.

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