Tag: heat exhaustion

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Surviving the Heat: Understanding the Risks to Your Heart

As the summer sun beats down relentlessly, it’s crucial to be aware of the dangers posed by extreme heat, especially if you have underlying heart conditions. Heatwaves not only test our endurance but also place significant stress on our cardiovascular systems, increasing the risk of heart attacks, cardiac arrest, and strokes. Understanding these risks and taking proactive steps before an adventure, such as investing in an AED and learning CPR/First Aid Training, can make all the difference in staying safe this summer.

Heart Conditions and Heat: A Dangerous Combination

Extreme heat affects everyone, but those with heart conditions are particularly vulnerable. Here’s why:

1. Increased Heart Rate and Blood Pressure: High temperatures cause our bodies to work harder to maintain a normal temperature. This can lead to an increase in heart rate and blood pressure, placing added stress on the heart.

2. Dehydration: Sweating excessively in hot weather can quickly lead to dehydration, which reduces blood volume and makes the heart work even harder to pump blood through the body.

3. Electrolyte Imbalance: Sweating also depletes essential electrolytes like potassium and sodium, which are crucial for maintaining heart function.

4. Vasodilation: Heat can cause blood vessels to dilate, which may lead to a drop in blood pressure and a strain on the heart to compensate.

Understanding the Risks

Heart Attack: Heat increases the likelihood of a heart attack due to the added stress on the cardiovascular system and the strain placed on the heart.

Cardiac Arrest: The combination of dehydration, electrolyte imbalances, and increased workload on the heart can trigger a sudden cardiac arrest, particularly in individuals with existing heart conditions.

Stroke: Heat can also lead to dehydration, which is a significant risk factor for stroke. Dehydrated blood is thicker and more likely to form clots, which can block blood flow to the brain.

Owning an AED is invaluable for cardiac arrest, heart attack, and stroke as it allows for rapid defibrillation to restore normal heart rhythms, provides clear CPR instructions for effective chest compressions, and bridges the critical gap between an emergency occurring and professional medical help arriving, significantly improving survival rates and reducing potential long-term complications. 

Precautionary Steps to Avoid Overheating

Stay Hydrated: Drink plenty of fluids throughout the day, even if you don’t feel thirsty. Avoid excessive alcohol and caffeine, which can contribute to dehydration.

Stay Cool: Spend time in air-conditioned spaces during the hottest parts of the day. If you don’t have air conditioning at home, consider investing in a handheld fan to keep on you at all times, or visiting public places with cooler air, like a nearby coffee shop or shopping mall.

Dress Appropriately: Wear lightweight, loose-fitting clothing in light colours to reflect heat and sunlight.

Limit Physical Activity: Avoid strenuous activities during peak hours (usually midday to late afternoon). If you must exercise, try to keep it indoors or do so in the early morning or evening when it’s cooler outside.

Know the Signs: Be aware of symptoms of heat-related illness, such as excessive sweating, dizziness, nausea, and rapid pulse. Seek medical attention if you or someone else shows signs of heat exhaustion or heat stroke.

As temperatures soar, it’s crucial to prioritize your heart health and take precautions against extreme heat. Whether you have a pre-existing heart condition or not, understanding the risks and being prepared with knowledge of CPR and First Aid Training, and tools like an AED, can make all the difference in staying safe and enjoying a healthy summer.

Stay cool, stay hydrated, and stay informed—your heart will thank you for it.

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Tips for Staying Safe in the Sun and Treating Burns

Tips for Staying Safe in the Sun & Treating Burns

As the weather heats up it’s important to keep sun safety in mind. Although the sun can be very enjoyable it’s important to understand the negative effects of prolonged exposure and how you can prevent it from causing you discomfort or long term effects. 

Suntans and Sunburns

Although it may be your summer goal, suntans are dangerous as they are a version of sun damage. Consistent or lengthy unprotected exposure to the sun can cause moderate to severe sunburns (ie. Radiation Burns). Even though suntans/burns do heal over time, prolonged exposure can cause irreversible damage to the skin which can ultimately lead to dark spots, moles or even skin cancer.

The following are common items used to protect your body while in the sun:

  • Hat
  • Sunglasses
  • Umbrella
  • Sunscreen – Croc Bloc*
  • Water (too much is better than not enough!)

*Croc Bloc is exclusively available from First Aid Canada, main features of the product include: hypoallergenic, unscented, sweat-proof and water resistant, safe for children etc. click here for more information on Croc Bloc.

The following are common injuries caused by prolonged exposure to the sun:

Radiation Burns

Radiation burns can be a result from radiant energy produced by the sun, sun lamps and/or x-rays. It is important to minimize your time exposed to these powerful rays to avoid long-term damage:

Signs & Symptoms

  • Redness of affected area
  • Blistering
     

Treatment

  • Get out of the sun and protect area from further exposure
  • Relieve affected area with cool water or a wet towel
  • If the victim experiences signs of heat stroke seek medical assistance

Heat Cramps

Excess heat and dehydration can cause the body to lose imperative salts and water content. If the body is unable to replenish itself without food or water, muscle heat cramps will occur. Heat cramps are commonly cause by physical activity in the summer heat.

Signs & Symptoms

  • Pain and spasms in muscles or cramps due to overuse
  • Difficultly moving affected muscle
  • Sweating, fatigue, dizziness, headache, nausea
  • Shock
     

Treatment

  • Get out of the sun and protect area from further exposure
  • Give food (salty snack/sport drink) and water to drink if victim isn’t nauseous
  • Stretch and massage the cramp (Do NOT place cold compress on affected area)

Heat Exhaustion and Heat Stroke

Heat exhaustion is a reaction to sustained heat and sweating. If heat exhaustion is left untreated it will lead to heat stroke, which is more severe and can become life threatening. Here are signs and symptoms to look out for regarding heat exhaustion and heat stroke:

Signs & Symptoms

  • Fear, anxiety, confused and/or disoriented
  • Over-sweating, nausea, dizziness, headaches
  • Restlessness, weakness, including a weak, rapid pulse
  • Warm/dry (lack of sweating) skin temperate, vomiting, convulsions, unconsciousness (Heat Stroke ONLY)
     

Treatment

  • Move victim to a cool spot and remove as much clothing as possible
  • Cover lightly if victim feels cold
  • Have victim drink water to if they do not feel nauseous
  • Advise victim to drink ‘sport’ beverages to restore depleted body salt
  • Call 9-11 if level of consciousness decreases or heat stroke is evident
     

The sun can be a very dangerous aspect of the summer season. To avoid discomfort, sickness and long-term effects of the sun it is important to use the tips mentioned above. Protect yourself to live a happy and healthy life.

Life is Precious. Be Prepared.