Last days, hours, minutes, or even seconds

Dani was devastated by the news that her father had another cardiac arrest. But she already expected that from the warnings of the doctors. 

The transplant did not work since he was rejecting the heart. But waiting for another match would be impossible. There was just not enough time. 

Now it seemed he had finally given up as he succumbed to a deep coma with low brain activity. The doctors were not very hopeful for another recovery.

"What did the doctors say?" She asked her husband, who handled dealing with her father's care. 

She had to stay with her mother, who silently wept on the side, watching her husband fight for his last breath. It would seem the machine had been keeping him alive, but for how long, the doctors could not say.