Doctor testifies he theorised that lack of oxygen stopped George Floyd’s heart

Dr Bradford Langenfeld (Court TV via AP)

The emergency room doctor who pronounced George Floyd dead after trying to resuscitate him testified on Monday that he theorised at the time that Mr Floyd’s heart most likely stopped because he did not get enough oxygen.

Dr Bradford Langenfeld, who was a senior resident on duty that night at Hennepin County Medical Centre, took the stand at the beginning of the second week of former Minneapolis Officer Derek Chauvin’s murder trial, as prosecutors sought to establish that it was Chauvin’s knee on the black man’s neck that killed him.