I have no info re Bartters syndrome, but please, any and all of you
involved in such cases, if the mother is bf and you are following, gather
the evidence, test the baby, and strongly consider publishing a case
report. With the MD perhaps. Then when these situations come up (so
rarely) more evidence can accumulate - this will help mothers, babies,
LCs and all.

Laurie Wheeler, RNC, MN, IBCLC
Violet Louisiana USA