 Data from the Maryland Department of Health shows that there were 127 emergency room visits for heat-related issues between June 30th and July 6th. Dr. Clifford Mitchell with the Department of Health says in these hot temperatures, everyone needs to stay hydrated and make every effort to stay cool. He says there are several symptoms that can indicate life-threatening heat exhaustion or heat stroke, including a weak heart rate, dizziness, confusion, and lightheadedness. So far this season, there have been six heat-related deaths in the state.