If not already unconscious, your loved one may drift in and out of consciousness.
He became gradually weaker, drifting in and out of consciousness.
She tried to concentrate on the conversation around her now, but kept drifting in and out of consciousness.
While he'd been drifting in and out of consciousness, she'd remained continually at his side.
As time passed, he began to drift in and out of consciousness, paying less attention to breathing.
For a while he drifted in and out of consciousness; then she was back.
He drifted in and out of consciousness for two weeks.
She had been drifting in and out of consciousness for several months.
Later, he would recall drifting in and out of consciousness for four days.
She seemed to drift in and out of consciousness, her voice hoarse.