What do systematic reviews say?

Active drain vs passive drain

It is very uncertain whether active drain changes intra‐abdominal infection compared with passive drain following pancreatic surgery (very low certainty).

• Prophylactic abdominal drainage for pancreatic surgery 2021 · Cochrane Headline outcomes only
  RR 0.87 [0.21, 3.66]
  2 studies · 321 participants
  Very low