On 27/10/2010, at 1:05 PM, Sarah Reece-Stremtan wrote:

>  I can't think of how either fentanyl or midazolam might directly depress lactogenesis

Have a look at this Australian study which found that intrapartum fentanyl use is associated with poorer breastfeeding outcomes.  
http://internationalbreastfeedingjournal.com/content/1/1/24
And here is another:
http://journals.lww.com/anesthesiology/Abstract/2005/12000/Effect_of_Labor_Epidural_Analgesia_with_and.16.aspx
Cheers
n
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