She demonstrate her medical expertise on several occasions . In " Time Squared " , Pulaski discover that the duplicate Captain Picard is out of sync in time and will slowly improve until he return to the point at which he left . In the episode " Pen Pals " , Picard order Pulaski to wipe the memories of a young girl called Sarjenka , whom Data had been corresponding with and helping in violation of the Prime Directive . Whilst in " Samaritan Snare " , she is summoned to Starbase 515 to perform heart surgery on Captain Picard as she is the most experienced surgeon nearby . This is despite Picard 's wish for her not to perform the surgery , due to his concern with the image it might give to the crew .