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The Water Cooler
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ME says no evidence of Asphyxia in George Floyd case....
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<blockquote data-quote="killerpigeon" data-source="post: 3371532" data-attributes="member: 42920"><p>By no means an expert, but a knee to the back of the neck, doesn't cause cardiovascular or respiratory collapse, unless the cervical spine is severed or seriously injured. A constant, and weighted knee, to the back thoracic area, doesn't allow full expansion of the chest, limiting inspiration and tidal volume. Limited inspiration of O2, due to decrease in tidal volume, could result in excess blood CO2. This can result in a shift of the acid base homeostasus. Excessive CO2 could upset the oxygen hemoglobin dissociation curve, which is very sensitive to changes in acidity. Cardiovascular tissue is very dependant on blood O2 and acidity. Even a few hundreths change, of the acid base scale, could result in the heart muscle not being adequately profused. At this point the cardiovascular system fails, prompting the respiratory system to kick into high gear and compensate. This can give the person the impression that "I can't breathe," but in actuality, they can't adequately respir, cellular respiration. The heart will compensate by going into tachycardia, which will maintain for a few minutes. Afterwards, unless resolved, the heart will try one last ditch effort of ventricular tachycardia before resulting in ventricular fibrillation and ultimately asystole. What I'm trying to say is, maybe the guy with his knee on the back should be charged with manslaughter or murder, not the indefensible officer shown with his knee on the neck. Like I said though, not an expert.</p><p></p><p>Sent from my SM-G930V using Tapatalk</p></blockquote><p></p>
[QUOTE="killerpigeon, post: 3371532, member: 42920"] By no means an expert, but a knee to the back of the neck, doesn't cause cardiovascular or respiratory collapse, unless the cervical spine is severed or seriously injured. A constant, and weighted knee, to the back thoracic area, doesn't allow full expansion of the chest, limiting inspiration and tidal volume. Limited inspiration of O2, due to decrease in tidal volume, could result in excess blood CO2. This can result in a shift of the acid base homeostasus. Excessive CO2 could upset the oxygen hemoglobin dissociation curve, which is very sensitive to changes in acidity. Cardiovascular tissue is very dependant on blood O2 and acidity. Even a few hundreths change, of the acid base scale, could result in the heart muscle not being adequately profused. At this point the cardiovascular system fails, prompting the respiratory system to kick into high gear and compensate. This can give the person the impression that "I can't breathe," but in actuality, they can't adequately respir, cellular respiration. The heart will compensate by going into tachycardia, which will maintain for a few minutes. Afterwards, unless resolved, the heart will try one last ditch effort of ventricular tachycardia before resulting in ventricular fibrillation and ultimately asystole. What I'm trying to say is, maybe the guy with his knee on the back should be charged with manslaughter or murder, not the indefensible officer shown with his knee on the neck. Like I said though, not an expert. Sent from my SM-G930V using Tapatalk [/QUOTE]
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