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Old 03-23-2011
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Question SIADH and ANP

Guys I have been encountering some contradictions between kaplan Qbank wich I already finished and UW wich I'am on my 3rd block.
Kaplan says that SIADH is going to produce an increase in ANP (atrial natriuretic peptide) due to the increase in volume and that ANP contribute to the hyponatremia due to the natriuresis.
UW says that because the patient is euvolemic (we don't have volume overload) in SIADH there's not going to be an increase in ANP.

Who's right?????????
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Old 03-23-2011
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Default Euvolemic

SIADH is euvolemic.
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Old 03-23-2011
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Originally Posted by dr_mhm View Post
SIADH is euvolemic.
But is SIADH euvolemic because natriuresis (ie ANP) is intact? If that's true then Kaplan would be more right than UWorld in this case (rare, I know, but possible )
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Old 03-24-2011
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SIADH will be euvolemic only if ANP is intact, isn't it?
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