Charlie was in a serious car accident. When he was brought t…

Charlie was in a serious car accident. When he was brought to the hospital his vital signs were weak. The health-care team did their best to stabilize him, but his heart stopped and they were unable to start it again. His motor reflexes are absent, his pupils are unresponsive, and his EEG has been flat for at least 10 minutes. If he is tested again in 24 hours and the results are the same, then what is the diagnosis?