What do systematic reviews say?

Postoperative parenteral nutrition vs oral nutrition alone

Postoperative parenteral nutrition may leads to higher complications compared with oral nutrition alone (low certainty).

• Perioperative nutrition for the treatment of bladder cancer by radical cystectomy 2019 · Cochrane Headline outcomes only
  RR 1.4 [1.07, 1.82]
  1 study · 157 participants
  Low