I can contribute to this,it depends on how one lands from the fall and the momentum. Football players can have this happen if they are knocked in the air and come down the wrong way, even with the helmet. Chris Reeves had a brainstem injury.
If...if he was using the scooter to try to get a ball out of the chandelier and the dog knocked him off balance the scooter would be in his hands and would have knocked his head backwards upon landing (because of the length ). I think after the point of landing and the scooter slamming against his head he would have released it and it would have flown up in the air landing behind him somewhere. I also don't think he was on the lower landing I think he may have been on the upper level of stairs.
Another possibility is the scooter got caught in the chandlier when he went over slamming into his head and face snapping his neck back. He would have released it then but hanging on it could have swung him higher first then down.
I've tried to explain this over and over and I just don't know if I haven't done a good job or what but to me this makes the most sense. I don't think it was a simple fall but one in which he or the scooter got tangled up in the fall.
Another possibility is he just landed that way forcing his head back but if he had been holding that scooter in any way it could have caused him to lose balance and be top heavy. Just think have you ever fallen with anything in your hands? I have and if what I'm carrying is heavy and or long it has smacked me right in the face. Luckily it wasn't down 2 flights of stairs.
I think it is entirely possible he was stretching to hold out the scooter to knock the ball out of the chandelier probably with his feet wrapped around the banister (very precariously balanced). If the dog jumped on him or jostled him in any way that balance would be gone. I suspect strongly if he said Ocean that's what happened. A true and total accident.
There would have been enough circulation left in his brain to utter a word then because of the function of the pons and brainstem the damage from the fall would have taken effect and the autonomic nervous system would not have been able to get the signals through anymore for the beating heart and breathing and both stopped.
If the communication cannot get through to the brain then only life support can maintain those autonomic functions.
I feel this article about Christopher Reeve is very informative and I've included a few parts from the article below:
http://www.washingtonpost.com/wp-dyn/articles/A99660-1995Jun1.html
There are seven vertebrae in the neck, and any break in the first four, accompanied by a serious spinal cord injury, will cause severe impairment of breathing and quadriplegia. What was not spelled out in Jane's statement is the extent to which Reeve's spinal cord was disrupted.
The spinal cord carries nerve fibers traveling both from the brain to the rest of the body and from the body back to the brain. Those coming from the brain are responsible for voluntary control of muscles. Those traveling toward the brain carry sensation.
Cameron B. Huckell, an assistant professor of orthopedic surgery at the Johns Hopkins University medical school, said yesterday that "most people who have a complete disruption of the spinal cord don't even make it to the hospital. **
Only patients who have been rapidly resuscitated survive the initial event and then have a 60 to 70 percent mortality rate at one week."
Lawrence S. Chin, assistant professor of surgery at the University of Maryland School of Medicine in Baltimore, concurs. "If there is absolutely no indication of some type of recovery at 48 hours, the chance that there will be recovery is very, very low," he said.
**This in my opinion supports Rebecca giving him CPR right away.
I hope I have explained what I think happened.
Max looked so much like my son did at that age. I can't imagine the way the parents must feel. The devastation, the loss, knowing you're not going to hear his voice again, memories of his energy and loving nature and not being able to hug him again or have him hug you. But on the other side what a blessing to have had him for the six years they did.
If I did not have a background and was in a profession that dealt with neurology and being a parent dealing with this, I'm not sure I'd understand right away either.Especially if a Dr expressed suspicions of foul play, I'd be furious but I also understand that Dr's are human.
If- what I surmise is what happened, it could have happened under anyone's supervision anywhere.
I think the parents actually had a chance to say goodbye and spend time with Max because CPR was administered.