. Author manuscript; available in PMC: 2014 Nov 16.

Published in final edited form as: Cochrane Database Syst Rev. 2010 Sep 8;(9):CD007396. doi: 10.1002/14651858.CD007396.pub2

Analysis 21.1. Comparison 21 IV morphine versus IV pethidine, Outcome 1Women satisfied with analgesia (assessed 3 days postpartum).

Review: Parenteral opioids for maternal pain management in labour

Comparison: 21 IV morphine versus IV pethidine

Outcome: 1 Women satisfied with analgesia (assessed 3 days postpartum)