He continued to feel worse, with increased dyspnea, first on exertion then at rest.
 The patient has congestive heart failure. 
(ROOT (S (NP (PRP He)) (VP (VBD continued) (S (VP (TO to) (VP (VB feel) (ADJP (JJR worse))))) (, ,) (PP (IN with) (NP (NP (VBN increased) (NN dyspnea)) (, ,) (PP (PP (ADVP (RB first)) (IN on) (NP (NN exertion))) (PP (ADVP (RB then)) (IN at) (NP (NN rest))))))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (NP (JJ congestive) (NN heart) (NN failure))) (. .)))
( He ( ( ( ( continued ( to ( feel worse ) ) ) , ) ( with ( ( ( increased dyspnea ) , ) ( ( first ( on exertion ) ) ( then ( at rest ) ) ) ) ) ) . ) )
( ( The patient ) ( ( has ( congestive ( heart failure ) ) ) . ) )