The infant was admitted to the NICU for respiratory distress.
 The infant was grunting and had nasal flaring 
(ROOT (S (NP (DT The) (NN infant)) (VP (VBD was) (VP (VBN admitted) (PP (TO to) (NP (NP (DT the) (NNP NICU)) (PP (IN for) (NP (JJ respiratory) (NN distress))))))) (. .)))
(ROOT (S (NP (DT The) (NN infant)) (VP (VP (VBD was) (VP (VBG grunting))) (CC and) (VP (VBD had) (INTJ (JJ nasal) (VBG flaring))))))
( ( The infant ) ( ( was ( admitted ( to ( ( the NICU ) ( for ( respiratory distress ) ) ) ) ) ) . ) )
( ( The infant ) ( ( ( was grunting ) and ) ( had ( nasal flaring ) ) ) )