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Dr. Martin Tobin said fentanyl did not cause the depression of Floyd's respiration.
Thursday, April 8th 2021 at 8:54PM
Dea. Ron Gray Sr.
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Pulmonology expert Dr. Martin Tobin testified during Derek Chauvin’s trial for the murder of George Floyd on April 8, 2021. Tobin explained that fentanyl was “not having an effect” on George Floyd’s respiratory center. Read the transcript of his testimony remarks here.
Speaker 2: (01:37)
And so what does it tell you bottom line with respect to fentanyl as it relates to Mr. Floyd.
Dr. Martin Tobin: (01:44)
Exactly. In terms of fentanyl, one of the major changes you see in fentanyl is a slowing of the respiratory rate. And again, we would be expecting a 40% reduction in the respiratory rate with fentanyl. The norm of the respiratory rate is 17 breaths per minute, plus or minus five. So that would mean a normal respiratory rate of between 12 and 22. That’s the normal range of respiratory rate. And so if it was with fentanyl, you’d be expecting a respiratory rate of 10. Instead of that, you counted here yourself and you can see when you counted yourself that the respiratory rate is 22. So basically, it tells you there isn’t fentanyl on board, that is affecting his respiratory centers. It’s not having an effect on his respiratory center.
Speaker 2: (02:43)
So Mr. Floyd’s respiratory rate was normal at 22, just before he lost consciousness?
Dr. Martin Tobin: (02:49)
Correct.
Thursday, April 8th 2021 at 8:59PM
Dea. Ron Gray Sr.
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Speaker 2: (04:04)
So, you said that there were significant factors in the case of Mr. Floyd. Would you help the jury understand what those were?
Dr. Martin Tobin: (04:11)
Yes. The important factors are that we know that he made his own last spontaneous effort to breathe at 20:25:16. After that, you can look at the videos and you see, he makes no breath. The last breath he took was that 20:25:16. Then we know after that, he stayed on the street for another three minutes or so. Then he’s placed into the ambulance and we know that in the ambulance, they attempted to put in an airway and i-gel. And you can see that on Officer Lane’s body cam, you can see all of that happening. And then you can see the time at which they actually successfully inserted the airway, and when they gave him the first breath. And that is a gap of nine minutes and 50 seconds from when he last took a breath.
Thursday, April 8th 2021 at 9:04PM
Dea. Ron Gray Sr.
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Dr. Martin Tobin: (05:14)
That’s very significant, because we can calculate what is the rate of increase in the carbon dioxide in somebody who doesn’t breathe. If somebody doesn’t take a breath, carbon dioxide increases at a predictable rate. And that rate is up to 4.9 millimeters of mercury per minute that it increases. And so he has not taken a breath for nine minutes and 50 seconds, so you would expect just on that basis, that he’s carbon dioxide level will go up by 49. So you add 49 to the normal values of 35 to 45. And then you add that and you’re going to get a value of between 89 and above. And so it comes out virtually identical to the value that they’ve found in the emergency room of 89.
Speaker 2: (06:19)
So doctor, what’s the punchline with respect to that, what does it tell us?
Dr. Martin Tobin: (06:22)
The significance of all of that is it’s a second reason why you know fentanyl is not causing the depression of his respiration. What you’re seeing is that the increase in his carbon dioxide that is found in the emergency room is solely explained by what you expect to happen in somebody who doesn’t have any ventilation given to them for nine minutes and 50 seconds. It’s completely explained by that.
Thursday, April 8th 2021 at 9:06PM
Dea. Ron Gray Sr.
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This testimony blows strongholds against the defense argument that fentanyl was the cause of Geoge Floyd's death.
Thursday, April 8th 2021 at 9:18PM
Dea. Ron Gray Sr.
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The doctor is a social warrior Ron. He didn't prove anything about fentanyl in George Floyd's system based on his respiration. The reason is simple. George Floyd was not home in his lazy boy zoning out so the doctor's comment about "normal" respiration is right out the window. And nobody wants to face up to how George Floyd was acting. FOLKS don't freak out for no reason.
Thursday, April 8th 2021 at 9:43PM
Steve Williams
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Dr Martin J Tobin — a pulmonologist and critical care physician from the Chicago area — explained the real cause of death when prosecutors called him to the stand in the Derek Chauvin trial on Thursday, April 8, 2021.
Steve, do you know or understand what a pulmonologist is?
What is a social warrior Steve, since this is your term?
Thursday, April 8th 2021 at 10:48PM
Dea. Ron Gray Sr.
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I watched the melifluous doctor's testimony Ron and like all the FOLKS, I had no trouble understanding. I only want to know why the world renowned doctor thought George Floyd should have NORMAL resPIRation as he was being crushed to death?
Thursday, April 8th 2021 at 11:32PM
Steve Williams
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There won't be justice for George Floyd. They can't get a conviction when they are trying Chauvin without the others.
Thursday, April 8th 2021 at 11:36PM
Steve Williams
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Now that is BULL💩, there was only ONE fired Cop that had put his full weight on the back of George Floyd's neck until death. That is the reason why those others are NOT on trial today. Once this trial is over, the other X- cops will get their day in court. One Trial at a TIME.
Friday, April 9th 2021 at 5:18PM
Dea. Ron Gray Sr.
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