She slid into unconsciousness after a few minutes, and her body went limp.
Unconsciousness took her away again.
He did not know how long his unconsciousness lasted.
His head slammed against something hard and he lay there, momentarily stunned to the brink of unconsciousness before turning slowly to his side and opening his eyes.
Before death occurs the pulse and respiration become exceedingly rapid and weak, and complete unconsciousness sets in.