Shock. Outlines Definitions Signs and symptoms of shock Classification General principles of management Specific types of shock.

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Presentation transcript:

Shock

Outlines Definitions Signs and symptoms of shock Classification General principles of management Specific types of shock

Definitions Shock: is a disturbance of circulation leading to inadequate perfusion of vital tissues and with a wide variation of systemic effects. Normal tissue perfusion: requires three intact mechanisms: 1- A functioning pump (heart) 2- Adequate volume (blood and plasma) 3- An intact vascular system

DHSR Approved Curriculum-Unit 1

1- confusion and delirium. 2- scared appearance. 3- rapid and shallow respiration. 4- rapid and weak pulse. 5- cold and pale skin. 6- nausea and vomiting. 7- reduced blood pressure.

Caused by blood or plasma loss due to: A- Burns. B- Bleeding peptic ulcer. C- Ruptured varices. D- Extensive fractures. E- Crushing accidents. F- External or internal injuries.

Inability of heart to pump needed blood: Causes: 1- myocardial infarction. 2- cardiac arrhythmia. 3- pulmonary embolism. 4- myocardial contusion.

Caused by failure of nervous system to control diameter of blood vessels. Causes: 1- severe pain. 2- spinal injury.

Allergic shock. Functioning blood vessels is disturbed by sensitivity to injection of a foreign substance. Causes: 1- insect stings. 2- certain medicines (antibiotics)

Occurs in severe infections. Exotoxins of gram +ve bacteria (staph aureus) Endotoxins of gram –ve bacteria (E coli) Exotoxin (cell-protein-heat liable) Endotoxin (cell wall – lipid – heat stable)

1- Carry standard CPR first aid to maintain an open airway, monitor breathing, and prevent further blood loss. 2- oxygen to assist respiration. 3- position: depending on problem Lower extremity elevation (improve circulation). Supine position in fracture of extremities

Position an unconscious casualty Semi prone Position on his side with his head turned so fluids can drain from his mouth. Maintains airways open and provide best drainage of vomiting.

Cont. 4- control bleeding. 5- keep normal temperature: cover patient with blanket, remove wet clothings. 6- start I.V line. 7- drug therapy according to physician’s order. 8- monitor all vital signs. 9- avoid movement (head, spine, neck injury)

Specific types of shock Hypovolemic shock: Replace volume therapy by I.V fluids In massive hemorrhage, more than one I.V line is required.

Cardiogenic shock Continuous oxygen to combat hypoxia. Correct hypovolemia. Appropriate therapy. Measure urine volume (catheter). Monitor arterial blood gases.

Septic shock I.V antibiotic therapy. Continue appropriate therapy after culture and sensitivity results. Anaphylactic shock Ensure open airways. Oxygen administration. Monitor blood pressure. Start I.V line. Hydrocortisone administration. Antihistaminic.

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