Murray's defense team says the doctor left Jackson's side for two minutes and during that time Jackson self-administered a lethal combination of propofol and the sedative lorazepam. Steinberg said that even if Jackson self-administered the drugs, that, too, would reflect Murray's gross negligence.
"You always monitor the patient in the hospital, when we give conscious sedation, the drugs are in cabinets. And we account for all the medications and we don't give an opportunity for the patient to self administer," he said.
He also said that if Murray had kept records for Jackson, he could have better assisted first responders and doctors at the UCLA Medical Center.
Murray never admitted giving Jackson propofol to emergency room doctors. He admitted administering the drug two days later in a police interview.
Doctor Kamangar said that for Murray to fail to mention Jackson's use of propofol was "unconscionable." He also said that Murray was negligent in his assessment of Jackson as an insomniac.
"Insomnia is a problem that very often is secondary…it's associated with other problems," he said.
Things like substance abuse, an underlying medical condition and psychological problems could cause insomnia.
Kamangar said that Murray should have taken a detailed sleep history of Jackson and conducted blood and lab tests to see why the singer couldn't sleep. If Jackson wasn't forthcoming about his medical history or addictions, Murray should have refused him care, Kamangar said.