Dr. Bradford Langenfeld, senior resident on duty the night George Floyd was brought into Hennepin County Medical Center, testified Monday (April 5) in Derek Chauvin's murder trial.

Dr. Langenfeld pronounced George Floyd dead after trying to resuscitate him, and he theorized that Floyd's heart most likely stopped because he didn't get enough oxygen. Dr. Langenfeld stated, "I felt that at the time, based on the information that I had, it was more likely than the other possibilities."

Dr. Langenfeld stated that Floyd's heart had stopped by the time he arrived at the hospital, adding that he was not told of any efforts at the scene by bystanders or police to resuscitate Floyd. He added that paramedics told him they had tried for about 30 minutes to resuscitate Floyd.