The incident that led to Joan Rivers’ heart attack occurred at what is called an ambulatory surgical center. Rivers’ procedure was an endoscopy, considered a routine procedure, to look at her vocal chords. During this outpatient surgery at Yorkville Endoscopy Center on August 28, she experienced cardiac arrest, and then was transferred by ambulance to Mount Sinai Hospital. She never regained consciousness; the hospital put her into a medically induced coma, and then later on life support before she died on September 4.
So far, there are no allegations of any wrongdoing. The state is investigating the incident and the center announced that its medical director was stepping down.