GI bleeding, she did not start the heparin gtt.
 She did not start the blood thinner
(ROOT (S (NP (NN GI) (NN bleeding)) (, ,) (NP (PRP she)) (VP (VBD did) (RB not) (VP (VB start) (NP (DT the) (NN heparin) (NN gtt)))) (. .)))
(ROOT (S (NP (PRP She)) (VP (VBD did) (RB not) (VP (VB start) (S (NP (DT the) (NN blood)) (ADJP (JJR thinner)))))))
( ( GI bleeding ) ( , ( she ( ( ( did not ) ( start ( the ( heparin gtt ) ) ) ) . ) ) ) )
( She ( ( did not ) ( start ( ( the blood ) thinner ) ) ) )