May
31
2017

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Basics of Heat Stress

Temperatures and humidity levels are on the rise. When the body is unable to cool off by sweating, heat-induced illnesses, such as heat rash, cramps, heat exhaustion, and heat stroke can occur. These illnesses can be serious, sometimes even resulting in death. Take a proactive approach to prevention by considering:

Common Factors That Can Contribute To Heat Stress

  • High temperature & humidity
  • Poor physical condition
  • Limited air movement
  • Direct sun or heat
  • Some medications
  • Physical exertion
  • A lack of tolerance for hot workplaces or areas

Heat Stress Prevention

  • Know the signs & symptoms of heat-related illnesses & monitor yourself & co-workers.
  • Block or avoid direct sunlight or other heat sources.
  • Avoid alcohol, caffeinated drinks & heavy meals.
  • Wear lightweight, light-colored & loose-fitting clothing.
  • If you detect signs of heat exhaustion, notify a supervisor or appropriate individual with first aid training.
  • Use cooling fans or air conditioning
  • Drink plenty of water or high-electrolyte fluids
  • Take regular breaks in shaded areas

What to Do In the Event Of:

Rashes

Symptoms: Cluster of small red pimples or blisters.
Causes: Excessive sweating, which leads to clogged pores and, if untreated, to infection.
First aid: Cleanse and dry the affected area, and use calamine lotion or powder to increase comfort.

Cramps

Symptoms: Painful spasms of leg, arm, or abdominal muscles, heavy sweating, and thirst.
Causes: Electrolyte deficiencies during or after strenuous physical activity, due to extended periods of intense sweating.
First aid: The affected individual must stop all activity, sit in a cool place, drink plenty of water or high-electrolyte fluids, and wait for a few hours after the cramps have subsided before engaging in any strenuous physical activities.

Exhaustion

Symptoms: Fatigue, profuse sweating, weak and rapid heartbeat, headaches, nausea, confusion, loss of coordination, muscle weakness, dizziness, or fainting.
Causes: Dehydration, lack of acclimatization to high temperatures, strain on the circulatory system, and reduced blood flow to the brain.
First aid: The affected individual must rest in a cool, shaded or air-conditioned area. First aid includes cooling the affected individual by fanning, misting with water, or applying ice packs. Give cool (not cold) water only if the individual is conscious.

Stroke

Symptoms: Core body temperature exceeding 104° F, hot skin with a lack of perspiration, strong and rapid pulse, nausea, confusion, dizziness, seizures or convulsions, or fainting.
Causes: Heat exhaustion was left untreated and the body’s cooling mechanisms have been exhausted.
First aid: Heat stroke is immediately life-threatening. Notify a supervisor and follow the emergency action procedure. While waiting for medical personnel to arrive, the individual giving care should take the following measures: (1) move the affected person to a cool, shaded or air-conditioned area, (2) give cool (not cold) water only if the individual is conscious, (3) cool the individual by fanning, misting with water, or applying ice packs, and (4) if necessary, loosen or remove heavy clothing.

Remember that most heat-related illnesses can be prevented by taking appropriate precautions. 

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