23/07/2017
HEAT EXHAUSTION & HEATSTROKE
Due to the upcoming holidays, and potential hot climates, we should be aware of the symptoms and treatment of Heat Exhaustion and Heatstroke.
Heat exhaustion and heatstroke are two heat-related health conditions.
If they're not quickly treated, they can both be very serious.
HEAT EXHAUSTION:
Heat exhaustion occurs when the body’s temperature rises to anything between the normal 37°C up to 40°C .
At this temperature, the levels of water and salt in the body begin to fall, which can cause a person to feel sick, feel faint and sweat heavily.
The symptoms of heat exhaustion can develop rapidly.
They include:
• very hot skin that feels ‘flushed’
• heavy sweating
• dizziness
• extreme tiredness
• feeling sick
• vomiting
• a rapid heartbeat
• mental confusion
• urinating less often and much darker urine than usual
If a person with heat exhaustion is taken quickly to a cool place, is given water to drink and has their excess clothing removed, they should begin to feel better within half an hour and have no long-term complications.
Without treatment, they could develop heatstroke.
Certain groups are more at risk of developing heatstroke or suffering complications from dehydration and should be taken to hospital if suffering heat exhaustion.
This includes:
• children under two years old
• very elderly people
• people with kidney, heart or circulation problems
• people with diabetes who use insulin
If you suspect that someone has heat exhaustion treat as follows.
• Get them to rest in a cool place – ideally a room with air conditioning or, if this isn't possible, somewhere in the shade.
• Get them to drink fluids – this should be water or a rehydration drink, such as a sports drink; they should stop taking fluid on board once their symptoms have greatly decreased (usually within two to three hours).
• Avoid alcohol or caffeine as these can increase levels of dehydration.
• Cool their skin with cold water – if available, use a cool shower or bath to cool them down, otherwise apply a cool, wet flannel or facecloth to their skin.
• Loosen clothing and ensure that the person gets plenty of ventilation.
Dial 999 if the person doesn't respond to the above treatment within 30 minutes.
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HEATSTROKE:
Heatstroke is far more serious than heat exhaustion.
It occurs when the body can no longer cool itself and starts to overheat.
When the core temperature rises above 40°C the cells inside the body begin to break down and important parts of the body stop working.
If left untreated, it can lead to complications, such as organ failure and brain damage.
Some people die from heatstroke.
The symptoms of heatstroke develop more quickly when associated with physical activity.
This type of heatstroke is referred to as exertional heatstroke.
Symptoms of heatstroke include:
• high body temperature – a temperature of 40°C (104°F) or above is often a major sign of heatstroke.
• heavy sweating that suddenly stops – if the body is unable to produce any more sweat, it's a major warning sign that it has become over-heated and dehydrated
• a rapid heartbeat
• rapid breathing (hyperventilation)
• muscle cramps
The extreme heat that causes heatstroke also affects the nervous system, which can cause other symptoms such as:
• mental confusion
• lack of co-ordination
• fits (seizures)
• restlessness or anxiety
• problems understanding or speaking to others
• seeing or hearing things that aren't real (hallucinations)
• loss of consciousness
Heatstroke is a medical emergency.
Dial 999 immediately if you think that you or someone you know has heatstroke.
While you're waiting for the ambulance to arrive you should do the following:
• Move the person to a cool area as quickly as possible.
• Increase ventilation by opening windows or using a fan.
• If they're conscious, give them water to drink but don't give them medication, such as aspirin or paracetamol.
• Shower their skin with cool, but not cold, water (15-18°C).
• Alternatively, cover their body with cool, damp towels or sheets, or immerse them in cool but not cold water.
• It's better to wait for medical supervision before fully immersing them in water, such as in a bath, as the body’s response could cause them harm.
• Gently massage their skin to encourage circulation.
• If they start to have a seizure move nearby objects out of the way to prevent injury (don't use force or put anything in their mouth).
• If the person is unconscious and vomiting, move them into the recovery position, making sure that their airway is clear