( ( Blood ( gas analysis ) ) ( ( may ( prevent ( ( excessive diagnosis ) ( of ( renal ( tubular acidosis ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Blood) (NN gas) (NN analysis)) (VP (MD may) (VP (VB prevent) (NP (NP (JJ excessive) (NN diagnosis)) (PP (IN of) (NP (JJ renal) (JJ tubular) (NNS acidosis)))))) (. .)))
Blood gas analysis may prevent excessive diagnosis of renal tubular acidosis.
(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))))))))))) (. .)))