Protecting your heart from the heat

YUMA, Ariz.(KYMA) - As temperatures continue to climb across the Desert Southwest, doctors at Onvida Health are reminding residents that extreme heat can do more than cause heat exhaustion. It can also put significant strain on the heart.

Dr. Sowjanya Yenigalla, a cardiologist at Onvida Health, said the body works harder to stay cool during periods of extreme heat.

"Extreme heat can affect both the heart and blood vessels," Yenigalla said. "Blood vessels get wider because our bodies are trying to dissipate the heat. We also have a lot of sweating with the increased heat, and with that we lose electrolytes and water from our body."

That extra strain causes the heart to pump faster, which can be especially dangerous for adults over 65 and people with pre existing heart disease, kidney disease, or diabetes. Patients who take certain medications, including water pills, may also face a higher risk.

Doctors say patients should never stop taking prescribed medications without first talking to their healthcare provider.

Yenigalla said warning signs include chest pain, chest pressure, a rapid heart rate, dizziness, and fainting.

"Our heart tries to work really hard and stronger by increasing the heart rate," Yenigalla said. "For patients with pre existing cardiovascular conditions, this can leave a strain on their heart, which can lead to hospitalization."

Doctors recommend avoiding outdoor activities during the hottest hours of the day, staying hydrated, and seeking shade whenever possible.

Local resident Joseph Langan said he makes an effort to stay out of direct sunlight.

"Use the shade as much as possible," Langan said. "If you have to walk a few blocks, follow the path that's going to be in the most shade rather than the sun."

Health experts say anyone experiencing warning signs of heat related heart problems should call 911 or go to the nearest emergency room immediately.