Hemorrhagic shock is divided into 3 phases: phase 1 is the ischemic-hypoxic phase, phase 2 is the bruising phase, and phase 3 is called the extensive diffuse intravascular coagulation phase. phase 1 in the ischemic-hypoxic phase when shock will occur in the stress response, and to ensure that the major organs such as the heart, lungs and brain perfusion skeletal muscle, skin, viscera, blood vessels and kidneys will contract. At this time, the skin appears pale, blood pressure is slightly elevated or unchanged, consciousness may exist, urine output is normal or slightly reduced, and the skin and extremities are pale and wet and cold. phase 2 is called the bruising phase, when shock is not relieved and anaerobic glycolysis increases, dilating the pre-capillary sphincter, while causing blood to pool and form bruises at the bottom of the vascular bed. At this time the skin will appear florid-like changes, pale and wet cold extremities continue to increase, unconsciousness, urine volume decreased, fine and rapid pulse rate, blood pressure continues to decrease. Finally, the patient will enter the late shock stage, also called DIC stage, also known as extensive diffuse intravascular coagulation, when the patient continues to have unmeasured blood pressure, unmeasured heart rate, decreased urine output, and cyanosis of the extremities.