NUR 250 Exam3 questions and answers
NUR 250 Exam3 questions and answers Shock - Shock is a condition in which blood flow to cells and tissues is inadequate. There is insufficient oxygen and nutrients available for cells which cause cellular hypoxia and cell death. Organ failure and death is likely if not treated Patho of shock - Decreased blood supply to cells result in the following cellular changes: Cells lack oxygen, nutrients and energy. Cells start to produce energy through anaerobic metabolism. Anaerobic metabolism produces lactic acid and increased acidity causes normal cell function to cease. Cells swell, cell membranes become more permeable allowing fluid and electrolytes to seep in and out of cells. Na/K pump becomes impaired. Cell structures (mitochondrial and lysosomes) are damaged resulting in cell death. In stress states, catecholamines, cortisol, glucagons and inflammatory cytokines are released causing hyperglycemia and insulin resistance.
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