From the Blog

September 21, 2016

Heat stroke in Thailand

Heat stroke can kill or cause damage to the brain and other internal organs. Although heat stroke mainly affects people over age 50, it can effect us all.

 

Heatstroke in Thailand

 

Heat stroke often occurs as a progression from milder heat-related illnesses such as heat cramps, heat syncope (fainting), and heat exhaustion. But it can strike even if you have no previous signs of heat injury.

Heat stroke results from prolonged exposure to high temperatures — usually in combination with dehydration — which leads to failure of the body’s temperature control system. The medical definition of heatstroke is a core body temperature greater than 105 degrees Fahrenheit, with complications involving the central nervous system that occur after exposure to high temperatures. Other common symptoms include nausea, seizures, confusion, disorientation, and sometimes loss of consciousness or coma.

Symptoms of Heat Stroke

The hallmark symptom of heat stroke is a core body temperature above 105 degrees Fahrenheit. But fainting may be the first sign.

 

Heat stroke in Thailand keeping cool

 

 

Other symptoms may include:

• Throbbing headache

• Dizziness and light-headedness

• Lack of sweating despite the heat

• Red, hot, and dry skin

• Muscle weakness or cramps

• Nausea and vomiting

• Rapid heartbeat, which may be either strong or weak

• Rapid, shallow breathing

• Behavioral changes such as confusion, disorientation, or staggering

• Seizures

• Unconsciousness

 

 

Heat Stroke: Symptoms and Treatment

First Aid for Heat Stroke

If you suspect that someone has a heat stroke, immediately call Ambulance and Rescue 1554 or transport the person to a hospital. Any delay seeking medical help can be fatal.

While waiting for the paramedics to arrive, (bearing in mind the ambulance drivers across the Kingdom are normally just that; Drivers and not paramedics) initiate first aid. Move the person to an air-conditioned environment — or at least a cool, shady area — and remove any unnecessary clothing.

If possible, take the person’s core body temperature and initiate first aid to cool it to 101 to 102 degrees Fahrenheit. (If no thermometers are available, don’t hesitate to initiate first aid.)

Try these cooling strategies:

• Fan air over the patient while wetting his or her skin with water from a sponge or garden hose.

• Apply ice packs to the patient’s armpits, groin, neck, and back. Because these areas are rich with blood vessels close to the skin, cooling them may reduce body temperature.

• Immerse the patient in a shower or tub of cool water, or an ice bath.

If emergency response is delayed, call the hospital emergency room for additional instructions.

 

Heat stroke in Thailand 1

 

 

Risk Factors for Heat Stroke

Heat stroke is most likely to affect older people who live in apartments or homes lacking air conditioning or good airflow. Other high-risk groups include people of any age who don’t drink enough water, have chronic diseases, or who drink excessive amounts of alcohol.

Heat stroke is strongly related to the heat index, which is a measurement of how hot you feel when the effects of relative humidity and air temperature are combined. A relative humidity of 60% or more hampers sweat evaporation, which hinders your body’s ability to cool itself.

The risk of heat-related illness dramatically increases when the heat index climbs to 90 degrees or more. So it’s important — especially during heat waves — to pay attention to the reported heat index, and also to remember that exposure to full sunshine can increase the reported heat index by 15 degrees.

If you live in an urban area, you may be especially prone to develop heat stroke during a prolonged heat wave, particularly if there are stagnant atmospheric conditions and poor air quality. In what is known as the “heat island effect,” asphalt and concrete store heat during the day and only gradually release it at night, resulting in higher nighttime temperatures.

Other risk factors associated with heat-related illness include:

Age. Infants and children up to age 4, and adults over age 65, are particularly vulnerable because they adjust to heat more slowly than other people.

Health conditions. These include heart, lung, or kidney disease, obesityor underweight, high blood pressure, diabetes, mental illness, sickle celltrait, alcoholism, sunburn, and any conditions that cause fever.

Medications. These include antihistamines, diet pills, diuretics, sedatives, tranquilizers, stimulants, seizure medications (anticonvulsants), heart and blood pressure medications such as beta-blockers and vasoconstrictors, and medications for psychiatric illnesses such as antidepressants and antipsychotics. Illegal drugs such ascocaine and methamphetamine also are associated with increased risk of heat stroke.

 

Heat stroke in Thailand 2

 

Preventing Heat Stroke

When the heat index is high, it’s best to stay in an air-conditioned environment. If you must go outdoors, you can prevent heat stroke by taking these steps:

• Wear lightweight, light-colored, loose-fitting clothing, and a wide-brimmed hat.

• Use a sunscreen with a sun protection factor (SPF) of 30 or more.

• Drink extra fluids. To prevent dehydration, it’s generally recommended to drink at least eight glasses of water, fruit juice, or vegetable juice per day. Because heat-related illness also can result from salt depletion, it may be advisable to substitute an electrolyte-rich sports drink for water during periods of extreme heat and humidity.

• Take additional precautions when exercising or working outdoors.The general recommendation is to drink 24 ounces of fluid two hours before exercise, and consider adding another 8 ounces of water or sports drink right before exercise. During exercise, you should consume another 8 ounces of water every 20 minutes, even if you don’t feel thirsty.

• Reschedule or cancel outdoor activity. If possible, shift your time outdoors to the coolest times of the day, either early morning or after sunset.

• Monitoring the color of your urine. Darker urine is a sign ofdehydration. Be sure to drink enough fluids to maintain very light-colored urine.

• Measuring your weight before and after physical activity. Monitoring lost water weight can help you determine how much fluid you need to drink.

Avoid fluids containing caffeine or alcohol, because both substances can make you lose more fluids and worsen heat-related illness. Also, do not take salt tablets unless your doctor has told you to do so. The easiest and safest way to replace salt and other electrolytes during heat waves is to drink sports beverages or fruit juice.

Check with your doctor before increasing liquid intake if you have epilepsy or heart, kidney, or liver disease; are on fluid-restricted diets; or have a problem with fluid retention.

 

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