Pt has hx of MRSA infection in this wound. .
 The patient had a chronically infected wound. 
(ROOT (S (NP (NN Pt)) (VP (VBZ has) (NP (NP (NN hx)) (PP (IN of) (NP (NN MRSA) (NN infection)))) (PP (IN in) (NP (DT this) (NN wound)))) (. .) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBD had) (NP (DT a) (RB chronically) (JJ infected) (NN wound))) (. .)))
( Pt ( ( ( ( has ( hx ( of ( MRSA infection ) ) ) ) ( in ( this wound ) ) ) . ) . ) )
( ( The patient ) ( ( had ( a ( chronically ( infected wound ) ) ) ) . ) )