One good way to make a systematic assesment and intervention of the victim is to follow what I have learned from my Emergency Medical Techinician Course (EMT).
This would be following the Alphabet. I think, everyone would not fail to remember the alphabet even during emrgency situation considering that we started with the Alphabet from the very moment we started going to school.
So a good way to do a systematic physical assesment and intervention would be the following:
Airway - obviously start with the Airway. Check if the airway is clear. Solve problems related to the airway. Common problems encountered with the airway is obstruction.
Breathing - check the breathing. If the breathing is absent, immediately give rescue breaths. This will be covered more as we go further.
Circulation - As mentioned, circulation involves the heart. Absence of pulse means the heart is not contracting. If the patient has no breathing and has no pulse, start CPR immediately. For CPR procedure visit this link:
Hubpages CPR- Another life threatening problem that you may encounter with circulation is BLEEDING. Bleeding if not controlled may lead to shock and death.
Delicate Central Nervous System - asses the patients consciousness, check the pupils for equality and reaction to light. If the patient is conscious verify if he is aware of time and place. Ask what happened.
Extremities - check the upper and lower extremities. Solve any ovbious problems such as bleeding and amputation.
Fractures - check for fractures and apply splints to avoid fracture from getting worse.
General Appearance - if there are no signs of injury, assess for skin color and skin temperature.
Help/Hospital - as soon as the life threatening problems are controlled and other problems like fracture are given care, tha patient can now be transported to the hospital for permanent care.