Dr. Nader Kamangar's testimony resumes - Day 12 -

Dr. Nader Kamangar, a UCLA sleep expert testifying for the prosecution, continued his testimony and said medical records indicated Jackson's insomnia could be related to "anxiety for performing, as well as use of drugs, medications such as demerol."

Kamangar also said his review of Jackson's records showed he received demerol from Beverly Hills dermatologist Dr Arnold Klein. The defence wants to show Jackson was dependent on drugs to help him sleep and Murray was simply dealing with problems caused by other doctors.

In opening statements, lead defense attorney Ed Chernoff told jurors that in the months before June 2009, Jackson visited Klein's office as many as two to three times a week.

"Dr Arnold Klein addicted Michael Jackson to demerol," Chernoff said at the time.

Superior Court Judge Michael Pastor has denied a defense request to call Klein as a witness, ruling his testimony would be insufficiently relevant.

Dr. Kamangar said the combination of drugs Murray gave Jackson "was the perfect storm" that killed him.

"Mr. Jackson was receiving very inappropriate therapy, in the home setting, receiving very potent sedatives, including propofol, lorazepam and midazolam, without monitoring by Murray, and ultimately this cocktail was a recipe for disaster in a patient that had underlying dehydration," Kamangar said.

He called Murray's failure to chart "an egregious violation" and a contributing factor in the death.

"It is beyond comprehension," Kamangar said. "It is frankly disturbing."Kamangar also said Murray should have ruled out other possible problems that could have caused Michael Jackson's insomnia before loading him up with a boatful of drugs.

He told the court, the first thing Murray should have done was to have Michael write a "sleep diary" to figure out what the underlying problem was.

Flanagan asked Kamangar about  a Taiwan research study today from 2010 showing propofol is safe to use for insomnia. Kamangar said the study was done in a monitored area in a safe hospital setting after secondary problems have been ruled out, adding it's incomprehensible to use propofol at home and testified that propofol was never approved for use as a sleep aid when Murray used it to treat Michael Jackson's insomnia, saying Murray's treatment amounted to "an experiment."

He also said using Lorazepam to treat insomnia is inappropriate.

Kamangar told Flanagan that, based on the transcripts from the police interview, he believed Murray gave Michael 25 mg of propofol plus an additional unspecified amount through an IV drip on June 25.

Kamanger said Murray subjected Michael Jackson to an experiment by giving him propofol to treat his insomnia.

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