NguyenMurrayTrial100311.jpg

More damning evidence against Michael Jackson's personal physician Dr. Conrad Murray came to light as the second week of his manslaughter trial began on Monday.

UCLA cardiologist Dr. Thao Nguyen took the stand and revealed that she had never known Propofol, the drug that killed Jackson, to be used outside of a hospital. The surgical anesthetic is extremely dangerous, and she's only seen it used when doctors and nurses can watch over a patient carefully. "Propofol does not have an antidote, so we have to prepare for the worst," she told jurors.

Nguyen also revealed that like the other paramedics and doctors who testified before her, Murray, 58, never told her that he gave Jackson the Propfol. He did, however, sound desperate for Nguyen and her team to revive the King of Pop.

The cardiologist was called into the room after Jackson had been submitted to the hospital on June 25, 2009. "By the time I came down, the patient appeared lifeless," she revealed. "I couldn't find a pulse. My attending couldn't find a pulse."

Earlier in the day, ER physician Dr. Richelle Cooper also testified that Jackson was "clinically dead" when he initially arrived at the hospital.