George Floyd's pre-existing medical conditions and drugs in his system had nothing to do with his death, two medical experts for the prosecution testified at Derek Chauvin's murder trial Thursday. Rather, a combination of actions during his arrest that deprived him of oxygen caused his death, they said.
"Floyd died from a low level of oxygen, and this caused damage to his brain that we see, and it also caused a PEA (pulseless electrical activity) arrhythmia that caused his heart to stop," Martin Tobin, a lung and critical care specialist at the Edward Hines Jr. VA Hospital and Loyola University's medical school in Chicago, told Hennepin County District Court.
Tobin said handcuffing Floyd and pinning him face down to the pavement — along with the knees of Chauvin pressed into his neck and back, all combined to reduce his ability to breathe and, ultimately, killed him.
"A healthy person subjected to what Mr. Floyd was subjected to would have died as a result of what he was subjected to," Tobin said.
'Pressure on his chest and back'
Dr. Bill Smock, a Louisville, Ky., physician and expert on deaths from asphyxia, agreed that Floyd died "because he had no oxygen left in his body,"