During hospitalization, patient became progressively more dyspnic requiring BiPAP and then a NRB.
 The patient is in respiratory failure. 
(ROOT (S (PP (IN During) (NP (NN hospitalization))) (, ,) (NP (NN patient)) (VP (VBD became) (NP (NP (RB progressively) (RBR more) (JJ dyspnic) (VBG requiring) (NN BiPAP)) (CC and) (ADVP (RB then)) (NP (DT a) (NN NRB)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ is) (PP (IN in) (NP (JJ respiratory) (NN failure)))) (. .)))
( ( During hospitalization ) ( , ( patient ( ( became ( ( ( ( progressively ( more ( dyspnic ( requiring BiPAP ) ) ) ) and ) then ) ( a NRB ) ) ) . ) ) ) )
( ( The patient ) ( ( is ( in ( respiratory failure ) ) ) . ) )