( ( ( A buildup ) ( of ( CO2 ( in ( ( the blood ) ( due ( to ( depressed ( respiratory rate ) ) ) ) ) ) ) ) ) ( ( ( ( causes ( respiratory acidosis ) ) , ) ( while ( ( increased ( respiratory rate ) ) ( decreases ( ( blood CO2 ) ( leading ( to ( respiratory alkalosis ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN buildup)) (PP (IN of) (NP (NP (NNP CO2)) (PP (IN in) (NP (NP (DT the) (NN blood)) (ADJP (JJ due) (PP (TO to) (NP (JJ depressed) (JJ respiratory) (NN rate))))))))) (VP (VBZ causes) (ADJP (RB respiratory) (JJ acidosis)) (, ,) (SBAR (IN while) (S (NP (VBN increased) (NN respiratory) (NN rate)) (VP (VBZ decreases) (NP (NP (NN blood) (NN CO2)) (VP (VBG leading) (PP (TO to) (NP (JJ respiratory) (NNS alkalosis))))))))) (. .)))
A buildup of CO2 in the blood due to depressed respiratory rate causes respiratory acidosis, while increased respiratory rate decreases blood CO2 leading to respiratory alkalosis.
(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))))))))))) (. .)))