This is a throb of blood that passes along your arteries with each beat of your heart. It can be felt where an artery passes over a bone close to the skin E.g. radial pulse. The pulse rate of an adult is between 60 - 80.The average amount of blood an adult has is 8-9 litre's If a casualty is trapped for more than 15 minutes you should leave them trapped as poisons have built up. If it is release it could cause kidney failure. Face & Skin: pale cold and clammy.
Pulse: fast and weak (less blood so pulse is weak as harder to find. It is faster to make up for the blood loss)
Breathing: fast and shallow may gasp for air (Air Hunger)
Behaviour: May be restless, thirsty, faint, and dizzy. A serious condition that occurs when the cardiovascular system is unable to supply enough blood flow to the body. It can be caused by a loss of fluids or heart problems.