adh....>adh.....adh question !!!!!! - kindmd

[ArchivalUser]

If u infuse 3% hypertonic saline, what do u expect the plasma osmolarity and ADH levels to be....?

A. Posm Increase, ADH = Decrease
B. Posm --> Decrease, ADH = Increase
C. Posm --> Increase, ADH = Increase
D. WTF ???

[ArchivalUser]

c.

[ArchivalUser]

CCCCCC

[ArchivalUser]

OK I understand how Posm increases, but how ADH increase ???

Isn't it supposed to decrease since u r Loading fluids into the person ???

[ArchivalUser]

hyperosmolarity is best stimulant for ADH

[ArchivalUser]

ADH regulation - secreted in response to increased plama osmolarity and decreased blood volume.
hypertonic saline - increased plasma osmolarity - increased ADH

[ArchivalUser]

Oh ok...So increase in Sodium, which means increase in plasma osmolarity = increase in ADH release !!

Got it !

[ArchivalUser]

ADH maintain the osmolarity and aldosterone THE VOLUME
BUT when there is hypovolumia THEY BOTH WORK TO INCREASE THE VOLUME