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During severe dehydration, blood pressuredecreases. Explain whyblood pressure decreasesand explain why low blood pressurecould potentially be deadly. Then describe how therenin-angiotensin aldosterone systemoperatestoincrease blood pressure.
Answer
Dehydration happens when the body takes in loses more electrolytes and fluids as compared to what is ingested. Diarrhea and vomiting are the most common causes of dehydration (Chapman et al., 2021). If not managed, dehydration can result in cell death and, in severe cases, brain death. As blood water content decreases, blood pressure is also affected. In acute dehydration, there is a rapid decrease in blood pressure due to a drastic drop in blood volume (Akerman, 2018). In severe cases of dehydration, the blood pressure may drop significantly, which may result in hypovolemic shock due to a reduction in ejection fraction. Low blood volumes mean that various organs do not get sufficient blood; hence, lack certain nutrients and oxygen. This dehydration can result in fatigue and, in serious ca...
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