In the Emergency Department, the patient was started on Nipride initially and then was switched to nitroglycerin.
 The patient was not given medications in the ED
(ROOT (S (PP (IN In) (NP (DT the) (NNP Emergency) (NNP Department))) (, ,) (NP (DT the) (NN patient)) (VP (VP (VBD was) (VP (VBN started) (PP (IN on) (NP (NNP Nipride))) (ADVP (RB initially)))) (CC and) (S (ADVP (RB then)) (VP (VBD was) (VP (VBN switched) (PP (TO to) (NP (NN nitroglycerin))))))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBD was) (RB not) (VP (VBN given) (NP (NNS medications)) (PP (IN in) (NP (DT the) (NNP ED)))))))
( ( In ( the ( Emergency Department ) ) ) ( , ( ( the patient ) ( ( ( ( was ( ( started ( on Nipride ) ) initially ) ) and ) ( then ( was ( switched ( to nitroglycerin ) ) ) ) ) . ) ) ) )
( ( The patient ) ( ( was not ) ( ( given medications ) ( in ( the ED ) ) ) ) )