In eastern North Carolina, summer can be a time of backyard cookouts or days spent at the beach. However, soaring temperatures and smothering humidity put residents at risk of heat-related illnesses that are even more dangerous for people with a heart condition.
Dr. Blase Carabello, ECU Health cardiologist and chief of the Division of Cardiology at the Brody School of Medicine at East Carolina University, explained that the heart has to work overtime in extreme heat as the body tries to regulate its temperature.
“Most people are familiar with a car’s radiator, and they know that if the radiator does not work, they will be stuck on the side of the road with steam coming out of the hood,” Dr. Carabello said. “The human body’s radiator is the skin, and when you need to get rid of heat, your heart needs to pump extra blood to the skin to let that radiator work. Almost anyone with a heart condition who already has a weakened heart or some other difficulty is going to be stressed by the heat or have trouble regulating their body’s fluids.”
High temperatures put people at risk of heat exhaustion, which can cause symptoms such as lightheadedness, rapid pulse, low blood pressure, headache or nausea. Anyone who begins to experience those symptoms needs to get out of the sun and drink fluids, Dr. Carabello said. If you stop sweating in hot weather, or start shivering, that’s an indication your health is at risk.
Heat stroke, where the body reaches a temperature over 104-degrees, is a life-threatening condition that requires treatment.
“The body’s temperature can reach the point where it will shut down all activity unless you receive treatment,” Dr. Carabello emphasized. “If someone around you says they feel lightheaded or like they are going to faint in the heat, it is important to act. Check their pulse and, if that does not look right, call for help. It’s much better to have a false alarm than the alternative.”
Dr. Carabello said that when a heat advisory is issued, people need to use their best judgment and make the right decision for their health. When heat indices climb into triple digits, it’s very difficult for the body to regulate. He pointed out that at the World Cup, even some of the best athletes on the planet take heat breaks during their soccer matches.
“If some of the best athletes in the world need that, think about if you’re not on that level,” Dr. Carabello said. “People tend to think they can do anything, that they are super people, but the truth is that the kind of heat we can experience in eastern North Carolina can put your heart to the test. You don’t need to test your heart, so don’t do that. Just use plain, old fashioned, common sense.”