But reports of Jackson's frailty suggest that transporting him from the bed may not have been a major challenge. Rather, Murray braced Michael Jackson's back with his hand under his back and compressed his chest with the other hand. According to Miranda Sevcik, a spokewoman for Murray, the physician adopted this technique because he felt it was adequate considering Jackson's 110- to 125-pound frame.
Chernoff concurred. "He checked continuously to make sure there was blood flow and there was," he said. "It was effective, what he was doing. At some point he did bring him down off the bed and continue to administer CPR."
Cardiologists, however, disagreed that such a technique should be used with frail patients.
"I am not sure how he could have put his hand under him and at the same time delivered effective CPR," said Dr. Brian Olshansky, professor of cardiovascular medicine at the University of Iowa. "It usually requires both hands to compress the chest."
Still, better CPR may not have meant that Jackson would have been alive today, considering the period of time that had allegedly elapsed between Jackson's loss of consciousness and the arrival of paramedics.
Chernoff said that when Murray found Jackson unconscious in his bedroom, with only a weak pulse in his femoral artery, he immediately began CPR. But he also said it took Murray a while to find anyone in Jackson's rented mansion to help him call 9-1-1 after he failed to revive the superstar.
"He just happened to find him in his bed, and he wasn't breathing," the lawyer said. "Mr. Jackson was still warm and had a pulse."
Chernoff added that Murray's efforts continued for 25 to 30 minutes. If Jackson had gone into cardiac arrest at any point during his attempted resuscitation, as initial reports suggested, it is likely that the window to save his life would have been 10 minutes or less.
But one question which remains is whether there was an automatic external defibrillator available at Jackson's residence. An AED might have played a role in improving Jackson's chances for survival had it been available and implemented.
ABC News' Sarah Netter and Huma Khan contributed to this report.