<P> During her internship , Cristina has an on - off relationship with the chief of cardiothoracic surgery Preston Burke ( Isaiah Washington ) that leads to an accidental pregnancy . Yang schedules an abortion without telling him about the pregnancy due to Burke 's behavior towards their lack of relationship status . However , Yang experiences an ectopic pregnancy and Burke discovers the pregnancy after Yang collapses from a burst fallopian tube . Burke and Yang begin a relationship in the aftermath of her miscarriage . After Burke is shot in the arm and develops a hand tremor , Yang helps him cover it up by developing a covert partnership wherein she performs most of his surgeries . Yang initially denies involvement during a confrontation , but then confesses everything to Richard Webber ( James Pickens , Jr . ) , the chief of surgery . Yang 's actions jeopardize Burke 's chances of becoming chief , which he sees as a huge betrayal . After a short breakup , Yang breaks the silence and Burke proposes marriage , which Yang accepts after eight days of hesitation . Burke calls off the wedding , leaving Yang at the altar . She goes on her honeymoon to Hawaii with Meredith to recover , returning to discover that Burke has disappeared from her life and transferred to a different hospital . </P>
<P> During her internship , Cristina has an on - off relationship with the chief of cardiothoracic surgery Preston Burke ( Isaiah Washington ) that leads to an accidental pregnancy . Yang schedules an abortion without telling him about the pregnancy due to Burke 's behavior towards their lack of relationship status . However , Yang experiences an ectopic pregnancy and Burke discovers the pregnancy after Yang collapses from a burst fallopian tube . Burke and Yang begin a relationship in the aftermath of her miscarriage . After Burke is shot in the arm and develops a hand tremor , Yang helps him cover it up by developing a covert partnership wherein she performs most of his surgeries . Yang initially denies involvement during a confrontation , but then confesses everything to Richard Webber ( James Pickens , Jr . ) , the chief of surgery . Yang 's actions jeopardize Burke 's chances of becoming chief , which he sees as a huge betrayal . After a short breakup , Yang breaks the silence and Burke proposes marriage , which Yang accepts after eight days of hesitation . Burke calls off the wedding , leaving Yang at the altar . She goes on her honeymoon to Hawaii with Meredith to recover , returning to discover that Burke has disappeared from her life and transferred to a different hospital . </P>
who is the father of christina yangs baby
who is the father of christina yangs baby
Preston Burke
Preston Burke