Miraculous recovery for 13-year-old declared brain dead

Trenton McKinley is now recovering at home after being declared brain dead after suffering seven skull fractures in a dune buggy accident.
3:15 | 05/07/18

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Transcript for Miraculous recovery for 13-year-old declared brain dead
out. We'll talk about that 13-year-old Alabama boy's incredible recovery. Doctors told Trent Mckinley's parents their son was brain dead. His parents even signed a paper to donate his organs but then they say a miracle happened and ABC's linsey Davis is here with more. Good morning. Reporter: Good morning. There is one word that people involved this this story keep using to describe it, miraculous. One of the trauma surgeons told us the teen's heart stopped for 15 minutes. The doctors believed there was nothing else they could do. That's when the family says there was a divine intervention. This morning, an incredible ordeal turned astounding turnaround for an Alabama boy thought to be dead now back from the brink. The 13-year-old suffered a devastating injury back in March while playing at a friend's house. Trenton Mckinley was sitting in a trailer much like this one attached to a dune buggy driven by his friend when his son hit the brakes causing it to flip. I hit the concrete and the trailer landed on top of my head. After that I don't remember anything. Reporter: After being rushed to the hospital, doctors delivered horrible news to the teen's parents. Trenton had seven skull fractures and he needed not one but two surgeries to remove part of his skull, expected to never make a recovery, Trenton was declared brain dead. He was dead a total of 15 minutes. When he came back, they said he would never be Normal again. They told me the problems would be so bad to his brain he would be a vegetable even at the made it. Reporter: Clinging to life after surgery his parents were preparing for the unthinkable reality that their son would never wake up and began the heart-wrenching process of actually donating his organs. Five kids need organs and it was unfair to keep bringing him back because it was just damaging his organs even more. Reporter: Trenton's parents signed the paperwork and began preparing to take their son off life support the following day. That's when incredibly he showed signs of life. His brain flickering aware. The younger patients have more ability to rewire and other parts of their brain to pick up the slack of the parts of the brain that are no longer working. Reporter: Slowly but surely Trenton is defying all odds since his accident. He is a miracle and amazes everybody. No other explanation but god. There is no other way that I could have came back even the doctors said it. Reporter: Trenton is now home and clearly one thing intact is his sense of humor. I said I could turn my head sideways and put salsa in there and eat chips and dip out of my head. No more washing dishes for me. Still got that sense of humor. The hospital says that Trenton arrived on March 9th and began to show signs of cognition within the next 72 hours and there is no other explanation but god, he said. Even the doctors told him that. Amazing. It was. So happy for him. Continuing to make that recovery.

This transcript has been automatically generated and may not be 100% accurate.

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