Lactate improved from 2.7 to 1.1.
 The patient had a recent infection
(ROOT (S (NP (NNP Lactate)) (VP (VBD improved) (PP (IN from) (NP (CD 2.7))) (PP (TO to) (NP (CD 1.1)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBD had) (NP (DT a) (JJ recent) (NN infection)))))
( Lactate ( ( ( improved ( from 2.7 ) ) ( to 1.1 ) ) . ) )
( ( The patient ) ( had ( a ( recent infection ) ) ) )