I have never used these angled pumping flanges - but I have a question
to those who have used them.  What is the logic physiologically of
these?  When babies nurse correctly, they draw the nipple out and
underlying tissue pretty evenly.  When we use an asymmetric latch, we
still see the nipple being drawn symmetrically over the tongue.  The
rationale behind larger flanges is to allow the ducts to expand without
external compression when mom has a milk ejection response during
pumping - but the ducts need to be "straight", not bent.  Is my thinking
incorrect here?   

-----Original Message-----
From: Lactation Information and Discussion
[mailto:[log in to unmask]] On Behalf Of Susan Burger
Sent: Saturday, August 02, 2008 5:43 AM
Subject: Re: Sizing of the angled shields

I have to pipe up on this one here since Manhattan is full of pumping
moms.  I've spent far too much time watching breasts in pump parts.  The
Pump in pal breast shields are actually sized larger than the Medela
breast shields because of the angle.  

I haven't specifically studied this, but my anecdotal observations and
comments from moms suggest to me the following equivalents:

The regular size Pump in Pal breast shields work well for women who seem
to fit conical breast shields ranging in size from 24 mm-27 mm and even
a fair number of women who seem to fit 30 mm Pump in Pal breast shields.


SOME mothers who are using 30 mm and most mothers who use 36 mm breast
shields need to use the large Pump in Pal Breast shields.

I have not yet seen a mother who fits the extra large Pump in Pal
shields, although I have seen some mothers try them and they didn't work
well.  This almost guarantees that I will see someone in the next week
that will need shields that big.

The angle creates a different pattern of pressure and so it doesn't
correspond exactly to the single ring of pressure on most shields.

Best, Susan Burger

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