( ( ( Blood work ) ( -LRB- ( ( I-Stat 8 ) -RRB- ) ) ) ( ( showed ( ( ( respiratory acidosis ) and ) ( a ( mild hyperkalemia ) ) ) ) . ) )
(ROOT (S (NP (NP (NN Blood) (NN work)) (PRN (-LRB- -LRB-) (NP (QP (CD I-Stat) (CD 8))) (-RRB- -RRB-))) (VP (VBD showed) (NP (NP (JJ respiratory) (NNS acidosis)) (CC and) (NP (DT a) (JJ mild) (NN hyperkalemia)))) (. .)))
Blood work (I-Stat 8) showed respiratory acidosis and a mild hyperkalemia.
(ROOT (S (NP (JJ Respiratory) (NNS acidosis)) (VP (VBZ is) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (ADJP (JJ problematic) (PP (IN because) (NP (NP (JJ excess) (NNS co2)) (PP (IN in) (NP (NN blood))))))))))) (. .)))