rnsrgr8t 395 Posts Specializes in Peds Urology,primary care, hem/onc. Mar 1, 2013 I do not work in the NICU so this is just a shot in the dark but has this baby's upper airway been evaluated? Baby's have to breath through their noses, especially during feeds, could she have choanal atresia? If she has a narrowing or blockage in the nasal passages, could explain when she sounds so congested but you cannot suction anything?? I could be way off base but that was immediately what I thought of when I read your post in addition to some cardiac/reflux issue which you say has already been evaluated. Good Luck! Hope they can figure it out! Keep us updated!