( ( ( ( ( ( ( The ( blood pressure ) ) ( in ( the ( fetal aorta ) ) ) ) ( is ( ( ( approximately 30 ) ( mm Hg ) ) ( at ( ( 20 weeks ) ( of gestation ) ) ) ) ) ) , ) and ) ( ( increases ( to ( approximately 45 ) ) ) ( mm ( Hg ( at ( ( 40 weeks ) ( of gestation ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN blood) (NN pressure)) (PP (IN in) (NP (DT the) (JJ fetal) (NN aorta)))) (VP (VBZ is) (NP (NP (QP (RB approximately) (CD 30)) (JJ mm) (NNS Hg)) (PP (IN at) (NP (NP (CD 20) (NNS weeks)) (PP (IN of) (NP (NN gestation)))))))) (, ,) (CC and) (S (NP (NP (NNS increases)) (PP (TO to) (NP (QP (RB approximately) (CD 45))))) (VP (VBP mm) (NP (NP (NNP Hg)) (PP (IN at) (NP (NP (CD 40) (NNS weeks)) (PP (IN of) (NP (NN gestation)))))))) (. .)))
The blood pressure in the fetal aorta is approximately 30 mm Hg at 20 weeks of gestation, and increases to approximately 45 mm Hg at 40 weeks of gestation.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))