Risk factors for post-operative intra-abdominal abscess after laparoscopic appendectomy: a case-control study

Results Overall, 1790 patients showed no post-operative complications and were assigned to the non-complication group, whereas 27 patients suffered from IAA postoperatively and were assigned to the IAA group. The incidence of IAA after LA was 1.4% and the only identified risk factor for IAA was dirty fluid collection in the peritoneal cavity observed during the operation. (P < 0.001) On logistic regression analysis of those patients who demonstrated dirty fluid collection, the non-placement of a peritoneal drain had statistical significance for the development of IAA. (P < 0.001) Conclusions In the present study, the presence of dirty fluid collection in the peritoneal cavity rather than the type of appendicitis was demonstrated as a risk factor for the development of post-operative IAA after LA. When such fluid collection is observed, surgeons should consider deploying peritoneal drainage and post-operative antibiotics treatment including anti-anaerobic treatment.