"It's an evaluation that in my mind indicates the vehicle was running.". The defense presented medical expert testimony Wednesday in the trial of Derek Chauvin, the fired Minneapolis police officer charged in George Floyd's death. "I was focused on [Floyd's] car, but it distracted me, and I was concerned for the officers' safety, too," Chang said. The defense launched its case on Tuesday. In body camera video played in court, Creighton raises his voice and uses an expletive as he commands Floyd, a passenger in a car he pulled over, to show him his hands. Chang is heard telling them to step away from the car and "stay put. Chauvin, who was seen in disturbing videos kneeling on Floyd's neck for more than nine minutes, is charged with second-degree murder, third-degree murder and second-degree manslaughter. WATCH: Defense shows body cam video of a Minneapolis Park Police Officer Peter Chang, who was across the street during the arrest of George Floyd. To convict Chauvin of second-degree manslaughter, prosecutors will need to prove beyond a reasonable doubt that Chauvin caused Floyd's death by "culpable negligence," meaning he created unreasonable risk and consciously took a chance of causing death or serious harm. Blackwell asked. Fowler testified he found no evidence of injury or bruising to Floyd's neck or back. Fowler agreed Floyd should have been given immediate medical attention. Fowler is now testifying about the effect of carbon monoxide on the body, noting Floyd's position as he was being restrained near the running squad car's exhaust pipe. He told jurors to expect to be sequestered following closing arguments on April 19. He explained that tests of the oxygen saturation in Floyd's blood proves that there was no way he could have had more than 2 percent of carbon monoxide in his system, an amount that would not lead to poisoning. Based on that, he said Chauvin would have been applying less than 23 percent of his own weight to Floyd's body. He said Floyd's death had too many conflicting factors, some of which could be ruled homicide and some that could be considered accidental. He's on the ground and everything.". Among those testifying for the defense were two expert witnesses, a former forensic pathologist and a use-of-force expert. Defense attorney Eric Nelson has called forensic pathologist David Fowler to the stand. Nelson asked Fowler to describe a study that called into question the dangers of positional asphyxia, with the authors calling it "an interesting hypothesis unsupported by any experimental data." Hall was subpoenaed to testify in the case, but his lawyer has argued that because the defense has suggested Hall sold Floyd drugs and that Floyd died of a drug overdose, his testimony would leave him vulnerable to potential criminal charges under Minnesota's broad third-degree murder statute. The prosecution then ended its questioning. He said he focused his review on the videos, use-of-force policies and training. After recalling Dr. Martin Tobin Thursday morning as a rebuttal witness, the prosecution again rested its case, meaning no more evidence will be introduced in the Derek Chauvin trial. Several medical experts testified for the prosecution that they relied on video evidence to determine that Floyd died of low oxygen due to the police restraint. To convict the former officer of third-degree murder, prosecutors must convince the jury that Chauvin caused Floyd's death during an act that was "eminently dangerous to others and evincing a depraved mind, without regard for human life.". "He keeps moving his hands around, he won't listen to what I have to say.". Medical examiners in determining manner of death can choose one of five classifications — homicide, natural, accidental, undetermined or suicide. Fowler testified his review of the case for the defense included Floyd's past medical records, hospital and ambulance records, police records, toxicology information, and multiple videos including bodyworn cameras, surveillance videos and bystander videos. "If you put all those together, it's very difficult to say which of these is most accurate," Fowler said. Fowler clarified that he believes that Floyd suffered a sudden cardiac arrest, but that there could have been a period of time between suffering cardiac arrest and dying. Hall is heard yelling, "Why is he going to the hospital? George Floyd's Family, Supporters Kneel in Protest Ahead of Derek Chauvin Trial in Minneapolis Trial to Begin for US Policeman Charged with Murder of George Floyd Music, Marching and Now a Movie: How a Young Black Artist is Pushing for Justice in America / CBS NEWS. Judge Peter Cahill said testimony is likely to wrap up by the end of the week, possibly with Friday off. He got Fowler to acknowledge that even someone who dies from being deprived of oxygen ultimately dies of an arrhythmia. George Floyd to be buried in Houston: Live updates. Follow the latest trial updates here. But defense attorney Eric Nelson has argued a combination of Floyd's underlying heart disease, adrenaline and the fentanyl and methamphetamine he had ingested prior to the arrest amounted to a fatal combination. "The placement of the knee was towards the back right side of Mr. Floyd's neck, and the airway is around the front," Fowler said. “All of those combined to cause Mr. Floyd’s death,” he said on the second day of the defense case. The death of George Floyd at the hands of the police set off days of protests in Minneapolis. Copyright © 2021 CBS Interactive Inc. All rights reserved. Chauvin is charged with second- and third-degree murder and second-degree manslaughter in the death of George Floyd, 46. Second-degree manslaughter carries a maximum prison term of 10 years. Video of George Floyd's death while in police custody on May 25, 2020 ignited the United States into a nationwide debate about racism, police brutality and systemic racism. Hill is heard saying, "They did something to him --- people are taking pictures over there. Derek Chauvin, the police officer on trial in the death of George Floyd, invoked his 5th Amendment right not to testify on Thursday. Sgt. Chauvin will not testify. "I'm not going to shoot you if you put your hands on the dash, it's the last time I'm going to tell you, it's simple," Creighton says on the video. Fowler also pointed to another study about knee restraints and transference of weight to the body, based on an experiment using dummies. Thousands bid farewell ahead of funeral of the black man whose death inspired worldwide anti-racism protests. Latest Updates: Officer Chauvin Charged With Murder in George Floyd Case Matt Stieb 5/29/2020 Fauci says U.S. must stick to two-shot strategy for Pfizer, Moderna COVID-19 vaccines: paper MINNEAPOLIS (AP) — George Floyd died of a sudden heart rhythm disturbance as a result of his heart disease, a forensic pathologist testified for the defense Wednesday at former Officer Derek Chauvin’s murder trial, contradicting prosecution experts who said Floyd succumbed to a lack of oxygen from the way he was pinned down. Defense expert: George Floyd died of underlyi... Dr. David Fowler testifies on Wednesday, April 14, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. #DerekChauvinTrial, Live updates: https://t.co/kNVdZTn6ZN pic.twitter.com/D9cw3eWv3g. He said the enlarged heart, caused by hypertensive cardiovascular disease, and narrowed arteries can increase someone's risk for sudden death. Defense attorney Eric Nelson argued the judge should acquit Chauvin without sending the case to the jury because the state has not proven its case. Floyd's girlfriend who testified on Thursday, April 1. He also got Fowler to admit that he didn’t take the weight of Chauvin’s gear into account when he analyzed the pressure on Floyd’s body. Prosecutors say Floyd died because the white officer's knee was pressed against Floyd’s neck or neck area for 9 1/2 minutes as he lay on the pavement on his stomach, his hands cuffed behind him and his face jammed against the ground. Fowler testified he could not find evidence in medical literature that Chauvin's knee would have impaired the function of Floyd's hypopharynx, a small area at the bottom of the throat, as a pulmonologist earlier testified for the prosecution. Fowler noted that Floyd's blood pressure after his 2019 arrest was "markedly elevated," possibly due to his hypertension being "out of control" or due to the stress of the police interaction. Up, up and away: Travel industry prepares for post-pandemic surge, Fauci expects decision on resuming Johnson & Johnson vaccine by Friday, Macron says France close to easing restrictions for vaccinated travelers, George W. Bush on painting a new vision of immigrants, Life aboard the International Space Station, Brothers Osborne on their long journey, of music and identity, Building Easter Island's first music school, Congressional caucus would champion "Anglo-Saxon" traditions, CDC panel adjourns without vote on extending J&J COVID vaccine pause, Michigan officials request help as COVID-19 cases surge. A family photo of the late John Pacheaco Jr. and a mural of George Floyd by Thomas "Detour" Evans and Hiero Veiga. The public quickly reached its verdict: Minneapolis police killed George Floyd. Minneapolis 8:06am Mar 13, 2021 Ex-cop given third degree murder charge over George Floyd … He asked at what point Floyd died in the more than five minutes between when Floyd was first restrained and when officers found he had no pulse. He said contributing significant factors included Floyd's ingestion of fentanyl and methamphetamine, exposure to vehicle exhaust and possible carbon monoxide poisoning, and Floyd's paraganglioma, a tumor in his pelvis. ", Responding to questions from Nelson, Chang said the crowd was "very aggressive towards the officers.". The defense called seven witnesses, far fewer than the 38 called by the prosecution, which has the burden of proof. Creighton acknowledged that Floyd … Fowler testified earlier that Floyd died of a heart arrhythmia due to his heart disease, but listed several contributing factors, including possible exposure to carbon monoxide from the squad car's exhaust. Where?" A Minneapolis judge has dismissed the third-degree murder charge against Derek Chauvin, one of the four former police officers facing criminal charges in the May killing of George Floyd. WATCH: Defense's expert witness Dr. David Fowler, former chief medical examiner for Maryland, says George Floyd had a cardiac arrhythmia due to his heart disease while he was held down by police. "Correct -- whatever the residual amount in those tablets was, was not in his body," Fowler said. So do you need a vaccine card? Hall asked Hill. Get Derek Chauvin trial live updates and news on George Floyd's death. The defense again objected. Expert testifies George Floyd died from "low ... 02:24 Chauvin, who was seen in disturbing videos kneeling on Floyd's neck for more than nine minutes, is … "The moment of death is not something you can easily document," Fowler said. Family photo/Photo by Kyle Harris ... Get the latest updates in news… Medical examiners in determining manner of death can choose one of five classifications -- homicide, natural, accidental, undetermined or suicide. It shows Chang approaching Floyd's friends, Shawanda Hill and Morries Hall, standing near Floyd's car across the street and around the corner. Eric Nelson, Derek Chauvin's attorney, is now asking Dr. Fowler about the effects of carbon monoxide. ""It's not an assumption," Fowler replied. Methamphetamine sensitizes the heart to arrhythmia, increases the heart rate and causes blood vessels to narrow, Fowler said. WATCH: Attorney Jerry Blackwell asks defense’s witness Dr. David Fowler: “Do you feel that Mr. Floyd should have been given immediate emergency attention to try to reverse the cardiac arrest?”Fowler: “As a physician I would agree.” pic.twitter.com/wTKuEPoBqQ. WATCH LIVE: https://t.co/t7Ar3u4Ntf pic.twitter.com/So3IPDO3O7. Americas. "He's on the ground? Fowler walked through how he made the determination, saying being restrained near a source of carbon monoxide and the stress of the police interaction triggering Floyd's "fight or flight" reaction would be considered a homicide. Fowler testified he did not see evidence on the video that Floyd died of hypoxia, or low oxygen, as the prosecution has argued. WATCH: Derek Chauvin says he will not testify, will invoke 5th Amendment, Defense witness speculates carbon monoxide, drug use could have contributed to George Floyd's death, Defense asks for acquittal in Chauvin trial. Fowler said a combination of Floyd's heart disease, narrowed blood vessels, drug ingestion and exposure to carbon monoxide were "all acting together and adding to each other and taking away from a different part of the ability to get oxygen into his heart.". "Correct, the scene in formation becomes very important," Fowler testified. Testimony focused on Floyd's drug use, and a defense use-of-force expert said Chauvin was justified in restraining Floyd. Since police officers are authorized to use force, prosecutors must prove that the force Chauvin used against Floyd was unlawful. Blackwell honed in on Fowler's testimony that no bruising or injuries were found on Floyd's neck or back. "I would fall back to undetermined.". "There's a potential of the adrenaline and methamphetamine further narrowing those arteries in the heart, as well as arteries elsewhere in the body, restricting blood flow," Fowler said. Charles McMillian, a witness in the George Floyd death. Fowler said "people with significant heart disease and reduced capacity in the heart" can be adversely affected by lower levels. Christopher Martin, 19, the store clerk who served Floyd at … The defense rested its case on Thursday morning after Derek Chauvin announced he would not testify. Our site on another browser, that the force Chauvin used against was. 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