Nursing 3910A/B Chapter Notes - Chapter week 2: Arteriole, Antibody, Congenital Heart Defect
9 Dec 2016
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Document Summary
State in which end organs receive insufficient oxygenation for normal metabolic processes; cells are always trying to maintain homeostasis. Adequate blood flow to the tissues and cells requires an adequate cardiac pump, effective vasculature and sufficient blood volume. If one of these components is impaired, perfusion to the tissues is compromised. Without treatment will progress to poor delivery of oxygen and nutrients, cellular hypoxia, and cell death that progresses to organ dysfunction and eventually cell death. During shock body stuggles and calls on its homeostatic mechanisms to restore blood flow. Any insult to the body can create a cascade of events resulting in poor tissue perfusion. Any pt with disease state may be at risk for developing shock. Common physiologic responses include hypoperfusion of tissues, hypermetabolism, and activation of the inflammatory response. Failure of compensatory mechanisms to effectively restore physiologic balance is the final pathway of all shock states and results in end organ dysfunction and death.
