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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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oakhan oakhan
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11 years ago
Hello Slight Smile

I have always been confused by this.

When your body is dehydrated you have less blood volume, therefore lower blood pressure. However, your body stimulates the release of angiotensin II which constricts the blood vessels to retain the extra fluid. So.. if you drink more water you will increase blood volume and then increase blood pressure because of that.

So... in a client who has high blood pressure and edema is recommending an increase in fluids just going to make their blood pressure and water retention worse?

Thanks!
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#1
11 years ago
Your blood vessels will dilate,  decreasing you blood pressure.
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#2
11 years ago
It could definitely make it worse depending on how much sodium they are consuming. Remember it is sodium intake that actually leads to an increase in blood volume. If you theoretically only consumed pure water, it would not lead to water retention unless you had an increase in sodium intake.
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