Lung and critical care specialist testifies in Officer Derek Chauvin murder trial

A medical expert says George Floyd died from a lack of oxygen that damaged his brain and caused his heart to stop. “A healthy person subjected to what Mr. Floyd was subjected to would have died,” said prosecution witness Dr. Martin Tobin, a lung and critical care specialist at the Edward Hines Jr. VA Hospital and Loyola University’s medical school in Illinois, during former Officer Derek Chauvin's murder trial Thursday, April 8, 2021.

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Thu., April 8, 2021

In this image from video, Dr. Martin Tobin testifies as Hennepin County Judge Peter Cahill presides Thursday, April 8, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd.

Pool Associated Press
In this image from video, defense attorney Eric Nelson, left, and defendant, former Minneapolis police Officer Derek Chauvin, right, listen as Hennepin County Judge Peter Cahill presides Thursday April 8, 2021, in the trial of Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd.

Pool Associated Press
A National Guard soldier, center, stands guard with deputies at the restricted vehicle entrance of the Hennepin County Government Center, Thursday, April 8, 2021, in Minneapolis where testimony continues in the trial of former Minneapolis police officer Derek Chauvin. Chauvin is charged with murder in the death of George Floyd during an arrest last May in Minneapolis.

Jim Mone Associated Press
In this image from video, prosecutor Jerry Blackwell questions Dr. Martin Tobin as Hennepin County Judge Peter Cahill presides Thursday, April 8, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd.

Poolassociated Press
A use-of-force expert says Derek Chauvin's weight including his gear, or 91½ pounds, was bearing down from his knee and pushing into George Floyd’s neck the entire time Floyd was handcuffed behind his back and lying face-down on hard pavement.

Associated Press