Angioplasty was performed and a stent was placed.
 the patient had an STEMI
(ROOT (S (NP (NNP Angioplasty)) (VP (VBD was) (VP (VP (VBN performed)) (CC and) (SBAR (S (NP (DT a) (NN stent)) (VP (VBD was) (VP (VBN placed))))))) (. .)))
(ROOT (S (NP (DT the) (NN patient)) (VP (VBD had) (NP (DT an) (NN STEMI)))))
( Angioplasty ( ( was ( ( performed and ) ( ( a stent ) ( was placed ) ) ) ) . ) )
( ( the patient ) ( had ( an STEMI ) ) )