He continued to receive his daily aspirin, but his beta blocker was held secondary to his chronic obstructive pulmonary disease flare.
 The patient has normal lung function. 
(ROOT (S (S (NP (PRP He)) (VP (VBD continued) (S (VP (TO to) (VP (VB receive) (NP (PRP$ his) (JJ daily) (NN aspirin)))))) (, ,)) (CC but) (S (NP (PRP$ his) (NN beta) (NN blocker)) (VP (VBD was) (VP (VBN held) (S (ADJP (JJ secondary) (PP (TO to) (NP (PRP$ his) (JJ chronic) (JJ obstructive) (JJ pulmonary) (NN disease) (NN flare)))))))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (NP (JJ normal) (NN lung) (NN function))) (. .)))
( ( ( ( He ( ( continued ( to ( receive ( his ( daily aspirin ) ) ) ) ) , ) ) but ) ( ( his ( beta blocker ) ) ( was ( held ( secondary ( to ( his ( chronic ( obstructive ( pulmonary ( disease flare ) ) ) ) ) ) ) ) ) ) ) . )
( ( The patient ) ( ( has ( normal ( lung function ) ) ) . ) )