Shock & transfusion
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| What is shock? | A clinical syndrome, lack of oxygen resulting in cell death, causes organ damage
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| How is energy produced in shock? | Anearobic metabolism resulting in acidosis
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| Mean arterial BP | cardiac output * peripheral resistance
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| Cell perfusion | cardiac output, adequate blood volume & resistancee
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| What causes shock? | compromised perfusion
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| 3 Components of perfusion | cardiac output, blood volume & PVR
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| What is cardiac output? | the ability of the heart to supply adequate circulation
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| What type of shock is caused by decreased cardiac output? | Cardiogenic shock
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| What type of shock is caused by decrease in blood volume? | Hypovolemic shock
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| What type of shock is caused by vasodilation? | Distributive/Circulatory shock
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| 3 types of distributive shock | septic, anaphylactic & neurogenic
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| 3 stages of shock | compensatory, progressive & irreversible
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| signs of early compensatory shock | NORMAL BP, vasoconstriction (lack of blood to brain), decreased pulse pressure, thready pulse, change in mental stat (anxious), DECREASED URINE, METABOLIC ACIDOSIS, INCREASE RESPIRATION, COOL SKIN
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| most noticable sign of compensatory shock | dark urine (below 30ml/hr)
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| What stops shock from progressing to the next stage? | treating the underlying cause eg. dehydration
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| What is the last thing to drop in compensatory shock? | BP is LAST TO DROP
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| early treatment of shock | encourage fluids, if NPO give NS
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