The request came the morning after the killing of 20-year-old Daunte Wright during a traffic stop triggered unrest in a suburb just outside Minneapolis.
Dr. Lindsey Thomas was the fourth medical expert called by the Minnesota attorney general's office as prosecutors looked to dismantle Chauvin's central defense.
He also emphatically rejected the defence theory that Floyd's drug use and underlying health problems were what killed him.
The doctor who pronounced George Floyd dead after trying to resuscitate him testified Monday that he theorized at the time that Floyd most likely died of suffocation.
The video was part of a mountain of footage and witness testimony this week in Derek Chauvin's trial in Floyd's death.
A Minneapolis firefighter who voiced frustration at being prevented from using her training to help George Floyd will be back on the stand Wednesday in the trial of Derek Chauvin.
Fourteen jurors or alternates are hearing the case — eight of them white, six of them Black or multiracial, according to the court.
So far, 13 jurors have been seated for Derek Chauvin's trial on murder and manslaughter charges, but the process is still underway.
The addition offers jurors another option for conviction and resolves an issue that might have delayed his trial for months.
The potential jurors -- who must be at least 18, U.S. citizens and residents of Hennepin County -- were sent questionnaires to determine how much they have heard about the case.
The third-degree murder charge filed against Derek Chauvin has been dismissed, but a second-degree murder charge remains.