There is absolutely no indication to supplement a breastfeeding baby
because of ABO incompatibility.  Suggesting that it *is* necessary
only points out that:

1. The physicians do not understand the relationship between
breastfeeding and jaundice.

2. Do not understand ABO incompatibility.

Why do you have to provide evidence to prove that supplements are not
necessary?  The physicians should provide evidence that breastfeeding
needs supplementation when the baby is haemolysing.

If the baby truly needs supplementation (as assessed by someone who
knows something about breastfeeding, and only after positioning
latching and compression have not gotten the baby drinking well), the
baby can be supplemented (preferably EBM, EBM in glucose water as
first and second choices) with a lactation aid at the breast.  (See
Breastfeeding Decision Tree--JHL June 1996).

Jack Newman, MD, FRCPC