Floyd died from lack of oxygen, not drugs, medical expert testifies
PBS, 09 Apr 2021
Prosecutors began the ninth day of the Derek Chauvin trial with testimony from pulmonologist Dr. Martin Tobin. After showing prepared illustrations and photos of the events, Tobin concluded that Chauvin’s knee on George Floyd’s neck caused narrowing of the hypopharynx — a critical area for getting oxygen into the lungs — and led to his death.
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