An injury or emergency situation not tended to immediately can have drastic consequences.
The administration of first aid depends on the gravity of the situation.
It may be as minor as applying ointment or sealing a wound with a bandage, or as major as performing CPR to save a life.
In serious cases, First Aid should only be administered by those who have received training and are qualified to do so.
On an average, any individual has a time frame of 3-4 minutes before effectively administering first aid, especially in major cases. Therefore it is important to act swiftly and be smart. The main goal is to keep the patient alive till professional help arrives.