@abc7chicago: Chicago is leading the country in 911 assisted bystander CPR, according to the Illinois Heart Rescue. According to the new report, bystander CPR in Chicago has gone up over 14% between 2021 to 2023. That includes regular everyday people stepping in to do hand compressions or even administering Narcan when a person is in need. 911 operator Stefanie Velez coached a local family over the phone after their loved one had a heart attack.