Monitor Those at High Risk - Those at greatest risk of heat-related illness include:
• infants and children up to four years of age;
• people who over exert during work or exercise;
• people 65 years of age or older;
• people who are ill or on certain medications; and
• people who are overweight.
If you or someone you know is at higher risk, it is important to drink plenty of fluids; avoid overexertion; and get your doctor or pharmacist's advice about medications taken for high blood pressure, depression, nervousness, mental illness, insomnia, or poor circulation.
Adjust to the Environment - Be aware that any sudden change in temperature, such as an early summer heat wave, will be stressful to your body. You will have a greater tolerance for the heat if you limit your physical activity until you become accustomed to the heat. If traveling to a hotter climate, allow several days to become acclimated before attempting any vigorous exercise, and work up to it gradually.
Use Common Sense - Avoid hot foods and heavy meals; they add heat to your body. Do not leave infants, children, or pets in a parked car. Bring your pets indoors with you to protect them. Dress infants and young children in cool, loose clothing and shade their heads and faces with hats or an umbrella. Limit sun exposure during the midday hours and in places of potential severe exposure, such as beaches. Ensure that infants and children drink adequate amounts of liquids. Give your outdoor animals plenty of fresh water, leave the water in a shady area, and consider wetting the animal down.
Heat Stroke and Heat Exhaustion
Two common problems are heat stroke and heat exhaustion. Heat stroke occurs when the body becomes unable to control its temperature. The body's temperature rises rapidly, the sweating mechanism fails, and the body is unable to cool down. Body temperature may rise to 106°F or higher. Heat stroke can cause death or permanent disability if emergency treatment is not given. Heat exhaustion is the body's response to an excessive loss of water and salt contained in sweat. Those most prone to heat exhaustion are elderly people and people working or exercising in a hot environment.
Warning signs of heat stroke vary but may include:
an extremely high body temperature (above 103°F, orally) unconsciousness dizziness, nausea, and confusion red, hot, and dry skin (no sweating) rapid, strong pulse throbbing headacheWarning signs of heat exhaustion vary but may include:
heavy sweatingmuscle crampsweaknessheadachenausea or vomitingpaleness, tiredness, dizziness What to Do
If you see any of these signs, you may be dealing with a life-threatening emergency. Have someone call for immediate medical assistance while you begin cooling the victim:
• Get the victim to a shady area.
• Cool the victim rapidly using whatever methods you can. For example, immerse the victim in a tub of cool water; place in a cool shower; spray with cool water from a garden hose; sponge with cool water; or if the humidity is low, wrap the victim in a cool, wet sheet and fan him or her vigorously.
• Monitor body temperature, and continue cooling efforts until the body temperature drops to 101-102°F.
• If emergency medical personnel are delayed, call the hospital emergency room for further instructions.
• Do not give the victim alcohol to drink.
• Get medical assistance as soon as possible.
Sometimes a victim's muscles will begin to twitch uncontrollably as a result of heatstroke. If this happens, keep the victim from injuring himself, but do not place any object in the mouth and do not give fluids. If there is vomiting, make sure the airway remains open by turning the victim on his or her side.
These self-help measures are not a substitute for medical care but may help you recognize and respond promptly to warning signs of trouble. Your best defense against heat-related illness is prevention. Staying cool and making simple changes in your fluid intake, activities, and clothing during hot weather can help you remain safe and healthy.
If you have any questions, please contact City Health Officer, Dr. Helene Calvet at 562-570-4047 or our Public Health Information Line at 562-570-4499.