Cynthia,
You may find what you are looking for in
Nowak et al (1994). Imaging evalulation of artifical nipples during bottle
feeding. Archives of Pediatrics and Adolescent Medicine 148: 40-42

Objectives: To determine whether real time ultrasonography can be used
directly to visualise artifical nipples in vivo while an infant is sucking,
to compare deformation differences of the artificial nipple with the human
nipple duing sucking and to compare the suck mechanism used by the infant
with 4 types of artificial nipples.

Karleen Gribble
Australia


> I've also been wondering if there are any ultrasound studies of *sucking*
> on a straw that can be compared with *suckling* at the breast. I've seen
> lovely images of suckling with descriptions of what is happening (see pp.
> 108-113 in the second edition of Breastfeeding and Human Lactation), but
> have never seen comparable images or descriptions for sucking. If they
> exist, such a comparison might be useful in evaluating the appropriateness
> of an abrupt weaning after tonsillectomy.

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