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Mary, a nursing student, has been caring for burn patients. She notices that they consistently show elevated levels of potassium in their urine and wonders why. What would you tell her?
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26. Fluid and Electrolyte Balance, Acid Base Balance
Electrolyte Balance
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Which of the following would increase sodium excretion?
A
glucocorticoids
B
progesterone
C
estrogens
D
aldosterone
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Understand the role of each hormone in sodium regulation: Glucocorticoids, estrogens, aldosterone, and progesterone.
Glucocorticoids generally increase sodium retention by enhancing the reabsorption of sodium in the kidneys.
Estrogens can also promote sodium retention, often leading to water retention as well.
Aldosterone is a key hormone in the renin-angiotensin-aldosterone system, which increases sodium reabsorption in the kidneys, thus reducing sodium excretion.
Progesterone, on the other hand, acts as a competitive antagonist to aldosterone, reducing its effect and thereby increasing sodium excretion.
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