Subsequently had cardiac cath which showed no coronary disease.
 Patient has no CAD
(ROOT (S (NP (NNP Subsequently)) (VP (VBD had) (NP (NP (JJ cardiac) (NN cath)) (SBAR (WHNP (WDT which)) (S (VP (VBD showed) (NP (DT no) (JJ coronary) (NN disease))))))) (. .)))
(ROOT (S (NP (NN Patient)) (VP (VBZ has) (NP (DT no) (NN CAD)))))
( Subsequently ( ( had ( ( cardiac cath ) ( which ( showed ( no ( coronary disease ) ) ) ) ) ) . ) )
( Patient ( has ( no CAD ) ) )