I understand. The only reason I thought it could be plural is because if a bird sits on a high voltage power line, nothing happens. That doesn't mean I am right. Did Dr. Nelson tell us exactly what the situation was?
I was struck by SueBob's lawyerly point that Dr. Nelson's reference to the implant didn't belong in the autopsy report. It was like he was offering a legal argument. It was CYA. He was making excuses for the lack of an MRI -- unconvincingly. SueBob pointed out that this was defensive argument, not objective reporting... and wondered why he did it? It reduced his credibility. She came back to this point several times in her blogging.
Dr. Nelson further reduced his credibility by saying Terri's condition "was consistent with" PVS, which is meaningless or an illegitimate post-mortem finding. Her condition was just as "consistent with" higher states of consciousness. Nelson was stacking the deck. He did it much more flamboyantly by comparing Terri's brain weight to Karen Ann Quinlan's. That is grandstanding, not objectivity.
This may very well be another strangulation that he missed. He should put his skill at missing strangulations on his resume.