First aid principles and practice     First aid is the first assistance or treatment provided to a person suffering from any sudden injury or illness before the arrival of the ambulance or a member of the medical team. In these circumstances, it may be necessary to improvise a method of first aid using the available tools and materials.   Objectives of first aid   First aid is provided to the injured person in order to:   – Preserving his life – Avoid deterioration of his condition – Help him recover   Responsibility of the first aider:   Given the…