- The person stops sweating.
- Skin can be pink, warm and dry, or cool and blue.
- High body temperature above 39 degrees Celsius.
- Pounding, rapid pulse.
- Headache, dizziness and visual disturbances.
- Nausea and/or vomiting.
- Clumsiness or slower reaction times.
- Disorientation or impaired judgement.
- Irritability and mental confusion.
- Collapse, seizures and unconsciousness.
- Cardiac arrest. Can be characterised by unconsciousness, stopped breathing and no pulse
- Call 000 and evacuate by ambulance immediately.
- Ensure that the ambulance is updated if the worker experiences seizures or becomes unconscious.
- If cardiac arrest occurs follow DRSABCD action plan
- Move the worker to a cool place with circulating air.
- Remove unnecessary clothing, including PPE
- Loosen tight clothing.
- Cool the worker by splashing room temperature water on their skin or sponging their skin with a damp cloth.
- Make a wind tunnel by suspending sheets around, not on, the worker’s body. Use a fan to direct gentle airflow over the worker’s body.
- Apply cold packs or wrapped ice to the worker’s neck, groin and armpits.
- If the worker is fully conscious sit them up to facilitate drinking and provide cool – not cold – fluid to drink.
- Provide an electrolyte solution with sugar. Do not attempt to give oral fluid if the worker is not fully conscious.
- Shivering is an automatic muscular reaction which warms the body. It will make the body temperature rise even further. If the worker starts shivering, stop cooling immediately and cover them until they stop. Once they have stopped recommence first aid treatment.