Effect of intraoperative abdominal lavage versus suction alone on postoperative wound infection in patients with appendicitis: A meta-analysis.

There is much controversy about the application of abdominal irrigation in the prevention of wound infection (WI) and intra-abdominal abscess (IAA) in the postoperative period. Therefore, we performed a meta-analysis of the effect of suctioning and lavage on appendectomy to assess the efficacy of either suctioning or lavage. Data were collected and estimated with RevMan 5.3 software. Based on our research, we found 563 publications in our database, and we eventually chose seven of them to analyse. The main results were IAA after the operation and WI. Inclusion criteria were clinical trials of an appendectomy with suctioning or lavage. In the end, seven trials were chosen to meet the eligibility criteria, and the majority were retrospective. The results of seven studies showed that there was no statistically significant difference between abdominal lavage and suctioning treatment for post-operative WI (OR, 1.82; 95% CI, 0.40, 2.61; p = 0.96); There was no statistically significant difference between the two groups in the risk of postoperative abdominal abscess after operation (OR, 1.16; 95% CI, 0.71, 1.89; p = 0.56). No evidence has been found that the use of abdominal lavage in the treatment of postoperative infectious complications after appendectomy is superior to aspiration.