. 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 8.7. Comparison 8 Pentazocine IM versus pethidine IM, Outcome 7 Low Apgar score (≤ 7) at 1 and 5 minutes.

Review: Parenteral opioids for maternal pain management in labour

Comparison: 8 Pentazocine IM versus pethidine IM

Outcome: 7 Low Apgar score (≤ 7) at 1 and 5 minutes