Doctor Richelle Cooper, trauma doctor at Ronald Reagan UCLA Medical Centre in Los Angeles, appeared as a witness at the trial of Dr Conrad Murray yesterday.
She stated that when Michael Jackson arrived at the hospital in an ambulance with Dr Murray, that she asked Dr Murray a number of questions including what medications Jackson had taken.
Dr Murray replied that he had administered only two 2mg doses of lorazepam (commonly used tranquiliser).
Dr Murray went to to speculate to Dr Cooper that the cause of Jackson's heart failure may have been dehydration, caused by overwork. Dr Murray did not mention that he had given Jackson the anaesthetic propofol, later found to have been the cause of Jackson’s death.
Dr Cooper told the court that, when Jackson arrived in the ambulance:
“He was clinically dead. He did not have a pulse.”
Prosecutors claim that there was a gap of at least 20 minutes between the time Dr Murray noticed that his patient was unresponsive, and calling the emergency services.
It is alleged by the prosecution that Dr Murray used that time to cover up what drugs he had been giving Jackson.
Richard Senneff, the paramedic dispatched to the Jackson mansion, also cast doubt on Dr Murray's openness with medical personnel at the time of Jackson's death.
Mr Senneff asked Dr Murray in Jackson's bedroom what condition Jackson had.
"He said, 'Nothing. He has nothing'."
The trial continues.