Drain Placement After Pancreatic Resection: Friend or Foe For Surgical Site Infections?

backgroundDespite multiple studies and randomized trials, there remains controversy over whether drains should be placed, and if so for how long, after pancreas resection. The aim was to determine if post-pancreatectomy drain placement and timing of drain removal were associated with differences in infectious outcomes and, if so, which specific procedures and infectious sites were most at risk.

methodsThe ACS-NSQIP targeted pancreatectomy database was utilized to identify patients who underwent pancreatectomies between 2015 and 2020 with postoperative drain placement for retrospective cohort analysis. A propensity score matching analyses was conducted to determine associations between drain placement and surgical site infections (SSI).

resultsOf 39,057 pancreatic resections, 66.4% were proximal pancreatectomies, and 33.6% were distal pancreatectomies. After propensity score matching, drain placement was not associated with significantly lower rates of superficial SSI (7% vs 9%, p = 0.755) or organ/space SSI (17% vs 16%, p = 0.647) after proximal pancreatectomy. After distal pancreatectomy, drain placement was associated with higher rates of organ/space SSI (12% vs 9%, p = 0.010). Drain removal on or after postoperative day 3 was significantly associated with higher rates of SSI in both proximal and distal pancreatectomy.

conclusionsDrain placement is associated with an increased rate of organ/space SSI after distal pancreatectomy and not after pancreaticoduodenectomy. When drains are utilized, early removal is associated with a reduction of SSI after all types of pancreatectomy. In surgical units where post-pancreatectomy SSI is a concern, selective drain placement for high-risk glands or after distal pancreatectomy, combined with early drain removal, may be considered.