Daudi Bamuwamye collapsed June 14 while riding Mission: Space at EPCOT with his mother and older sister. Orange-Osceola Chief Medical Examiner Dr. Jan Garavaglia released the cause of death today as heart abnormality from an unknown, possibly congenital cause.
"People with this condition are at risk for sudden death throughout their life due to abnormal electrical heart rhythms," she wrote. "The risk could be increased under physical and emotional stressful situations."
Neither the child's parents or their lawyer, Robert A. Samartin of Tampa, could be reached for comment.
Garavaglia informed the parents of the cause of death on Monday and waited a day to release it to the public to give the parents time to absorb the information.
Disney released a statement today saying, "Our sympathies are with the families during this difficult time. In regard to the reports, we believe they speak for themselves."
Questions were raised immediately after the death about the quality of Disney's emergency medical response by Disney ride attendants.
Despite being certified to perform CPR, two attendants who observed Daudi Bamuwamye being carried motionless from the ride did not check his pulse and thought he had passed out, according to a recording of their 911 call.
The Disney workers did not begin CPR for more than 2 minutes before being prompted to start by a 911 dispatcher.
No one has commented on whether the delay might have contributed to the child's death.