ENT's in our hospital would require the baby to be under general anesthesia, and usually try to dissuade mothers from having the surgery for posterior tongue-tie, as they aren't very familiar with it, and don't seem to understand how much PTT affects breastfeeding.
I prefer to send my patients to see a dentist in the area who does laser surgery for any type of tongue-tie, which does not require general anesthesia, and prevents any excessive bleeding in cases that are more involved.  Catherine probably knows more about this as well...
Good luck!
Kathleen L. Gale RN, IBCLC, RLC

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