A patient with severe dehydration has a reduced circulating blood volume. Which renal response helps restore arterial pressure?
Correct answer: C. Increased sodium and water retention
- A. Reduced renin release
- B. Reduced aldosterone secretion
- C. Increased sodium and water retention
- D. Increased urinary water loss
Explanation
Reduced renal perfusion activates the renin-angiotensin-aldosterone system, which promotes sodium and water retention and supports vasoconstriction. Reduced renin or aldosterone and increased urine loss would worsen the volume deficit.
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