Home / US / Lack of oxygen kills George Floyd, not medicine.

Lack of oxygen kills George Floyd, not medicine.

MINNEAPOLIS (AP) – George Floyd Died from lack of oxygen from being pinned to a sidewalk with a knee on his neck, a medical professional testified to former Derek Chauvin’s agent. Thursday’s murder trial, clearly rejecting the defensive theory that Floyd’s drug use and underlying health problems cost him his life.

“Healthy people are subject to what Mr. Floyd has to face to death,” prosecutor Dr. Martin Tobin, a pulmonary and crisis specialist at Edward Hines Jr. VA Hospital and School of Medicine at Edward Hines Jr. Loyola University in Illinois.

Using easy-to-understand language explaining medical concepts and even loosening his necktie to make a point, Tobin told the jury that Floyd̵

7;s breathing was severely constricted, while Chauvin and Minneapolis staff took the lead. Two other polis caught a 46-year-old black man on him in May with his hands gagged behind and his face attached to the ground.

Witnesses said the lack of oxygen had damaged the brain and caused his heart to stop beating.

Tobin analyzed images of the three officers in control of Floyd. As for what prosecutors said, it was almost 9 1/2 minutes.Chauvin asserts that Chauvin’s knees are “almost at the neck” more than 90% of the time.

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Several other factors, he said, also made it difficult for Floyd to breathe: the suspect’s handcuffs raised, the sidewalk stiffened, the overturned stance and the knees on the back.

Chauvin held his knee by Floyd’s neck for three minutes and two seconds after Floyd had a last breath, Tobin said. After his last breath, Floyd’s oxygen levels had dropped to zero and Floyd “reached a point where there was no oxygen left in his body. Oz, ”he said.

As prosecutors repeatedly played Floyd’s footage on the floor, Tobin identified what he said was a change in the face of a man telling him that Floyd was dead.That moment came about five minutes after police began arresting Floyd.

“At first, you see he’s conscious, you can see a slight flicker, then it goes away,” Tobin said. He explains: “That’s the moment that life leaves his body.”

Chauvin, 45, was charged with manslaughter and manslaughter in Floyd’s death on May 25.Floyd was arrested outside a neighborhood market after allegedly trying to pass a fake $ 20 bill by Floyd’s bystander video. The cry was suffocating as observers shouted at the white staff to dismiss him, sparking protests and scattered violence. Across the US

Tobin also testified that just because Floyd was speaking and being able to see the movement in the video didn’t mean he was breathing enough. He said the visual leg movement was a sign of involuntary brain injury, and the person could continue to speak until the airway narrowed to 15%. After that, “you’re in serious trouble.”

Authorities could hear the video telling Floyd that if he could speak, he could breathe..

During an objection, Chauvin’s attorney Eric Nelson spoke to Tobin about a common misunderstanding, pointing to earlier testimony that Minneapolis officials are trained that if people can speak, they can breathe. have

Nelson argued that Chauvin did what he was trained to do and that Floyd’s death was caused by illegal drugs. And medical problems including high blood pressure and heart disease. An autopsy found fentanyl and methamphetamine in his system.

Tobin said he analyzed Floyd’s breathing, as seen in the camera video, and explained that while fentanyl tended to reduce his breathing rate by 40%, Floyd’s breathing was “near normal” before he passed out.

Tobin also said the high blood carbon dioxide levels measured in the emergency room can be explained by Floyd not breathing for nearly 10 minutes before doctors began to perform rescue breaths compared to his breathing that was suppressed by fentanyl.

Another prosecution witness, Dr. Bill Smock, an asphyxiation mortality expert, backs up to Tobin Smock’s assessment, said Floyd had no symptoms of a fentanyl overdose, such as narrowing of the pupil and decreased breathing. He said Floyd’s actions were opposite because he was begging for air.

“That’s not a fentanyl overdose – someone is asking to breathe,” said Smock, a Louisville, Kentucky police surgeon and former emergency room physician. He said Floyd died of “position hypoxia”, a lack of oxygen due to body position.

In a cross examination, Nelson asked Smock about Floyd’s history of heart disease, prompting Smock to admit that a cop fight can cause heart stress and that shortness of breath could be a sign of a heart attack.

But when questioned again by the prosecution, Smock said there was no evidence that Floyd had suffered a heart attack or sudden death from arrhythmia, saying his death was due to a gradual decrease in oxygen. A little in several minutes and the neck “

In addition, on Thursday, forensic toxicologist said he had tested blood taken from Floyd at the hospital, including urine from his autopsy, and found high amounts of methamphetamine. Very low, ”Daniel Isenschmid said fentanyl and its by-products of its erosion were in Floyd’s system.

Isenschmid sets the level of fentanyl in the blood of Floyd at 11 nanograms per milliliter. For perspective, he said testing more than 2,000 people arrested for driving under the influence of fentanyl revealed an average concentration of 9.59 and dozens of people had levels higher than Floyd’s – and survived.

In a cross-examination, Nelson suggested there was no way of knowing how much fentanyl Floyd had ingested, and Isenschmid agreed.The defense attorneys also said it was impossible to know the concentration of fentanyl in the street drug.

“Every pill you take will turn out to be a unique experience for that person, right?” Agrees Isenschmid.

Tobin uses simple language to describe that as the airways narrow, breathing becomes more and more difficult, such as “breathe through the drinking straw”.

At one point, doctors loosened the tie and placed a hand on his own neck and the back of his head to show how the airways were working, inviting the jury to examine their own necks. Most of them did so, although the judge later said they didn’t have to.

Experts calculated that at times Chauvin was in a near-vertical position with the forefoot halfway above Chauvin’s body weight with his equipment – or 91.5 pounds (41.5 kilograms) – directly on Floyd’s neck.

He said it looked like Floyd was getting enough oxygen to keep his brain alive for the first five minutes because he was still talking.Tobin said that at Chauvin, his knee after the five-minute mark wasn’t important because in the episode. That Floyd had already suffered brain damage.

Chauvin’s attorney has repeatedly shown the jury’s stills from video he said depicts Chauvin’s knee on Floyd’s shoulder blade, not his neck. But almost all of those images were captured after the five-minute mark, according to the timestamp.


Find all reports of the AP’s George Floyd death at: https://apnews.com/hub/death-of-george-floyd.


Webber reports from Fenton, Michigan.

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