Michael Jackson and Joan Rivers used same sedative

Investigations after the botched procedure showed that her doctors failed "to identify deteriorating vital signs and provide timely intervention." In other words, they just seemed to let her die on the operating table. How could this happen?
Not only this but they used the exact same sedative, propofol, that was used on Michael Jackson during his untimely death.
The investigation showed the her dose of propofol was inconsistently documented...It doesn't take a conspiracy theorist to begin to wonder what really went on here.