What the hell happened? 这怎么回事

431. I see sinus rhythm.
     窦性心律恢复了
432. Blood pressure's coming up. All right.
     血压正在回升 好了
433. Pressure's returning. Rate's coming back.
     血压逐渐正常 心率也正常了
434. What the hell happened?
     这怎么回事
435. She had a seizure and her heart stopped.
     她刚才癫痫发作 心脏骤停
436. You're supposed to be monitoring her.
     你该时刻监视她情况
437. I checked on her, and she...
     我检查过 可她

来自《实习医生格蕾 第一季 第一集 Grey's Anatomy S01E01》第 434 行