Principles of First Aid: The basic principles of first aid are as follows:
Preserve life: This includes the life of the casualty and rescuer.
Protect the casualty from further harm: Ensure the scene is safe and the casualty is not affected by the presence of people.
Provide pain relief: This could include the use of ice packs or simply applying a sling.
Prevent the injury or illness from becoming worse: Ensure the treatment you provide as part of the First Aid does not make the condition of the casualty worse or delay the transfer of the patient to the hospital.