Expert blames Floyd’s death on heart-rhythm problem
MINNEAPOLIS >> George Floyd died of a sudden heart-rhythm problem due to his heart disease while being restrained by police, a retired forensic pathologist testified for the defense Wednesday at former Officer Derek Chauvin’s murder trial, contradicting experts who said Floyd succumbed to a lack of oxygen from the way he was pinned down.
Dr. David Fowler, former chief medical examiner for the state of Maryland and now a member of a consulting firm, said the fentanyl and methamphetamine in Floyd’s system, and possible carbon-monoxide poisoning from auto exhaust, were contributing factors.
“All of those combined to cause Mr. Floyd’s death,” he said on the second day of the defense case.
He also testified that he would classify the manner of death “undetermined,” rather than homicide as the county’s chief medical examiner ruled. Fowler said the death had too many conflicting factors, some of which could be ruled homicide and some that could be considered accidental.
Chauvin attorney Eric Nelson is working to prove that the 19-year Minneapolis police veteran did what he was trained to do, and that Floyd died because of his illegal drug use and underlying health problems.
Prosecutors say Floyd died because Chauvin’s knee was pressed against Floyd’s neck or neck area for 9½ minutes as the 46-yearold Black man lay pinned to the pavement on his stomach last May, his hands cuffed behind his back.
Fowler listed a multitude of factors: Floyd’s narrowed
arteries, his enlarged heart, his high blood pressure, his drug use, the stress of his restraint, the vehicle exhaust, and a tumor or growth in his lower abdomen that can sometimes play a role in high blood pressure by releasing “fight or flight” hormones.
Fowler said all of those factors could have acted together to cause Floyd’s heart to work harder and stop.
Previous witnesses have noted that a sudden heartrhythm problem does not necessarily produce visible signs on autopsy, but can be inferred from circumstances such as a victim suddenly clutching one’s chest and collapsing.
Nelson questioned Fowler extensively about carbon monoxide, which displaces oxygen in the bloodstream of people who breathe it in. Fowler said it could have contributed to oxygen depletion in Floyd, noting that he was facing the tailpipe end of a vehicle. But there is no way to know for sure because, he acknowledged, Floyd’s blood was never tested for carbon monoxide.
Nelson similarly worked to introduce another possible explanation on Tuesday when he raised questions
about excited delirium, or what a witness described as a potentially lethal condition that can include agitation, incoherent speech and extraordinary strength.
Several top Minneapolis police officials, including the police chief, have testified that Chauvin used excessive force and violated his training. And a number of medical experts called by prosecutors have said Floyd died from a lack of oxygen because the way he was restrained restricted his breathing.
Fowler said the prone position alone does not affect a person’s ability to breathe, testimony that contradicts other witnesses who said the position Floyd was in was inherently dangerous.
He also testified that Chauvin’s knee was not applied with enough pressure to cause any bruises or scrapes on Floyd’s neck or back. He further said that Chauvin’s knee on Floyd was “nowhere close to his airway” and that Floyd’s speaking and groaning showed that his airway was still open.
And he said that Floyd did not complain of visual changes or other symptoms consistent with hypoxia, or insufficient oxygen to the brain, and that he was coherent until shortly before he suddenly stopped moving.
“The bottom line is, moving air in and out, and speaking and making noise is very good evidence that the airway was not closed,” Fowler said.
Fowler handled a case similar to Floyd’s in Maryland in 2018, when a 19-yearold Black man, Anton Black, died after three officers and a civilian pinned him for more than five minutes as they handcuffed him and shackled his legs.
The family brought a federal lawsuit that included Fowler, whose autopsy concluded that the stress of the struggle probably contributed to Black’s death but found no evidence that restraint directly caused it. It also found no evidence of asphyxia, or a lack of oxygen.
Chauvin, a 45-year-old white man, is on trial on charges of murder and manslaughter in Floyd’s death after his arrest on suspicion of passing a counterfeit $20 at a neighborhood market. The video of him as he gasped that he couldn’t breathe touched off worldwide protests, violence and the furious examination of racism and policing in the U.S.
The defense hasn’t said whether Chauvin will take the stand.
Testifying could open him up to cross-examination, with prosecutors replaying the video and forcing Chauvin, one freezeframe moment at a time, to explain why he kept pressing down on Floyd.