Local cardiologist discusses heat safety

Local cardiologist discusses heat safety. Doctors and hospitals are warning Bay Area residents to take precautions against this stifling heat. Children, the elderly, and people with chronic health conditions are particularly vulnerable. Kaiser Permanente cardiologist, Dr. Rita Ng, appeared on KTVU's "Mornings on 2" to talk about the health issues we should all be concerned about, such as some of the cardinal rules to live by.