Is dr oz show true on what he talks about?

Meagan B Tutor

Today show on dr oz is about death! A woman who was giving birth went into cardiac arrest so they had to rush her into emergency c section while dead. This story scaries me and i am just wondering if the woman had any heart problems or how can something like this occur? I do have anxiety so i am going to panic and worry on things i hear until somebody explains it to me.