I'm posting this reply from Lisa Sandora (speech therapist, IBCLC, and LLLL)

Germaine,

I have done a bottle nipple trial with almost all disposable hospital 
nipples as well as many of the commercially available bottle nipples. 
The study was done with a Classic breast pump to determine which bottle 
nipples had flow rates comparable to the flow rate from the breast 
during the first week of lactation.  We wanted to find a bottle nipple 
that would not negatively influence the baby's feeding skills and 
facilitate transition to breast if the baby is supplemented for medical 
reasons.  Although the flow rate of the Enfamil green ring nipple was 
slower by a few mls compared to the newborn (blue ring) and  the Similac 
newborn, some of the nipples did not flow at all (quality of disposable 
nipples isn't so great) and when Karen Gromada and I had done some 
preliminary videotaping with real babies, we found that the flow may 
still be too fast.  Some of the LCs in our hospital have gotten more 
positive feedback about babies being able to handle the flow rate better 
than with the newborn nipples, but this is not enough to base whether or 
not they are truly acceptable or safe.

Karen and I will be presenting our results from the flow rate trial at 
ILCA this coming week and plan to submit those results for publication 
as well.  We are also in the early stages of a phase two trial with 
babies both on the post partum unit as well as NICU.  That will begin 
this fall. We are interested to see what we find when we assess infants' 
feeding performance using the hospital disposable bottles and some of 
the commercial bottles that we have identified as being slower flow.

Hope that this helps.  We will have more to share as our study continues.

Lisa Sandora, MA, CCC-SLP, IBCLC
Lactation Consultant
Speech-Language Pathologist

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