bio Q -

[ArchivalUser]

Sun

Renal correction of hyperkalemia will result in which of the following?

A. Alkalosis
B. Acidosis
C. Increased secretion of HCO3?
D. Increased secretion of H+
E. Increased excretion of Na+

question is from usmleasy.com.
I think ans: A. I do not understand the explanation.

The answer is: B

Hyperkalemia produces an increase in aldosterone secretion by the adrenal cortex. Aldosterone acts on the distal tubule to increase sodium reabsorption and enhance potassium secretion. When potassium excretion in the distal tubule is enhanced, hydrogen ion secretion, which also occurs in exchange for sodium resorption, is diminished. As hydrogen ion secretion diminishes, hydrogen ion is retained and acidosis occurs.

[ArchivalUser]

hi

The answer is acidosis as acidosis decreases potassium excretion therby causing hyperkalemia

[ArchivalUser]

Sun

The hyperkelemia (reason unknow from the question) should increase H-K exchang which will be acidosis in the body. If hyperkalemia produces an increase in aldosterone secretion, kidney will increase K, H secretion and Na reabsorption. H lost from kidney should improve acidosis.

[ArchivalUser]

ali

aldosteron increase K excretion, but increase H reabsorption is the result of exchange for K, not because of aldosteron.

[ArchivalUser]

Sun

FA write aldosterone'action on kidneys increase Na reabsorption and increase K & H secretion in distal tubule.

[ArchivalUser]

ali

I count find in BRS that aldosteron has direct effect on H, and I thought that aldosteron cause decrease K --> intracellular K shift out of cells--->replace the intracellular K by H---> alkalosis. and the opposit is true
But I dont know if aldosteron has direct effect on H , I might be wrong.