How do you diagnose cushings,”Low dexamethasome suppression-Normal finding is cortisol suppression24 hour urinary free cortisol level-Abnormal finding is elevated cortisolMeasure ACTH-If low –> Adrenal tumor or hyperplasia -If high –> High dose dexa or CRH stimulation testHig-dose dexa suppression-Suppression indicates pituitary pathology-No suppression indicates ectopic ACTH secretionCRH stimulation test-If ACTH increases, its pituitary-If ACTH DN increase

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Primary vs secondary hyperaldosteronsim,”Primary: Direct release of aldosterone (Ald>>Ren)Secondary: Direct release of renin (Ald ~= Ren)HTN, Low K (causes polyuria, polydypsia, metabolic alkalosis. No peripheral edemaCause-Adrenal adenoma (Conn’s syndrome)-Adrenal hyperplasia (almost always bilateral)Dx-Ald:Renin > 30 in primary-Saline infusion (normally this reduces aldosterone)-Oral Na loading: Give salt for 3 days –> if urine aldosterone is still high, this confirms the diagnosis-Adrenal venous sampling: If aldosterone is elevated on both sides

Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Primary vs secondary hyperaldosteronsim,”Primary: Direct[…]

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