Pressors changed to levo since SVR low.
 patient is hypertensive
(ROOT (S (RB Pressors) (VP (VBN changed) (PP (TO to) (NP (NN levo))) (SBAR (IN since) (S (ADJP (NNP SVR) (JJ low))))) (. .)))
(ROOT (S (NP (NN patient)) (VP (VBZ is) (ADJP (JJ hypertensive)))))
( Pressors ( ( ( changed ( to levo ) ) ( since ( SVR low ) ) ) . ) )
( patient ( is hypertensive ) )