1. First aid in the state of shock.
2. First aid in case of massive bleeding.
3. First aid in the state of unconsciousness
4. CPR practice.
5. Stabilized position.
First aid as a care or treatment offered to an injured person before salvage and rescue service or another qualified specialist arrives. You don´t need any special equipment to render first aid.
There are many helpful instruments in a well equipped first-aid kit but it is not always at hand when needed. We can however use anything available, we can improvize if necessary.