Was Joan Rivers' Death Preventable?

We finally learned Joan Rivers‘ cause of death on Thursday. But was that the whole story?
The coroner’s office implied that the lack of oxygen during Joan’s hypoxic arrest was a possible side effect for anyone being anesthetized.
But at least one medical source thinks different.
[ Related: Joan Rivers Cause Of Death Finally Released! Details HERE! ]
According to this source, the Propofol administered to Joan had nothing to do with her hypoxia.
In fact, they say that Joan didn’t suffer a lack of oxygen until AFTER the procedure was over. If this due to Joan’s oxygen levels not being properly monitored, then it was preventable.
And that means someone is at fault.
The investigation into the Yorkville Endoscopy clinic is ongoing.
[Image via Ramey Pix.]