What do systematic reviews say?

Epidural local anaesthetic vs opioid‐based regimen

Epidural local anaesthetic showed no clear difference in vomiting during first 24 hours compared with opioid‐based regimen (low certainty).

• Epidural local anaesthetics versus opioid‐based analgesic regimens for postoperative gastrointestinal paralysis,… 2016 · Cochrane Headline outcomes only
  RR 0.84 [0.57, 1.23]
  22 studies · 1154 participants
  Low