Dear collegue,
just my vision to your question:
1.During resuscitation in delivery room bicarb allows to save the live but not the brain, unfortunately.
2.In NICU first step would be most appropriate to try to find main cause of acidosis, after to try solve it and after - bicarb ... maybe.
3.In our practise we have very few indications for use bicarb - late shock with no responce to fluids and inotropes and some cong metabolic diseases(rare).
Re AAP recomendations: if you follow them, they are in permanent process of changes( ventilation/chest compressions ratio, oxygen, prevention of MAS, etc.). I believe that bicarb will be removed from the list of delivery room drugs in the future.
Audrius_LT