If you’ve ever injured yourself in addition to the pain you may have experienced being weak, dizzy, and nauseous, in which case you have experienced a mild form of shock. In this case, the symptoms appeared immediately after the injury, but they may not show up for several hours. Shock is a condition in which blood circulation is seriously disturbated.
Crushed or fractured bones, burns, prolonged bleeding, asphyxia and dehydration can all cause Shock. Shock may be slight or it may be severe enough to be fatal. Because all traumatic injuries result in some form of shock, you should learn its symptoms and know how to treat the casualty. The best approach to Shock Prevention is to treat all casualties suffering from moderate and severe injuries for shock even if they are no showing immediate signs or symptoms. Shock is frequently the most serious consequence of an injury.
Types of Shock
Shock can be caused by several different causes>
- Hemorrhagic shock. Reduced blood volume caused by either external or internal bleeding.
- Intestinal obstruction. Results in the movement of large amount of plasma from the blood into the intestine.
- Severe burns. Loss of large amounts of plasma from the burned surface.
- Dehydration. Results from severe and prolonged shortage of water intake.
- Severe diarrhea or vomiting. Loss of plasma through the intestinal wall.
- Neurogenic shock. Rapid loss of vasomotor tone that leads to vasodilatation to the extent that a severe decrease in blood pressure results.
- Brain damage. Leads to an ineffective control of the brain-s ability to constrict and dilate blood vessels – medullary vasomotor.
- Anaesthesia. Deep general anaesthesia or spinal anaesthesia that decreases the activity of the area of the brain that controls constriction and dilation of blood vessels (medullary vasomotor).
- Emotional shock (Faint). Results from emotions that cause strong parasympathetic stimulation of the heart and results in vasodilatation in skeletal muscles and in the viscera.
- Anaphylactic shock. Results from an allergic response that causes the release of inflammatory substances that increase vasodilatation and capillary permeability.
- Septic shock or “blood poisoning”. Results from peritoneal, systemic, and gangrenous infections that cause the release of toxic substances into the circulatory system, depressing the activity of the heart, leading to vasodilatation, and increasing capillary permeability.
- Cardiogenic shock. Occurs when the heart stops pumping or performance is decreased in response to conditions such as heart attack or electrocution.