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Flashcards in Disorders of the Pituitary Deck (10):
1

Are disorders of the Pituitary usually anterior or posterior?

Anterior pituitary

2

What are most pituitary disease caused by?

Adenomas

3

Hyperactivity of the AP can be affecting trophic and non trophic hormones. They can be functional or non functional. Explain what functional, and non functional would cause to happen?

Functional = increased secretion
Nonfunctional = not secreting

4

What would be an example that would be caused by hypersecretion of the AP?

The glands that it is targetting to be stimulated, excessively

5

Hyperactivity of the PP, what is the main disease we look at?

Syndrome of Inappropriate Anti Diuretic Hormone (SIADH)

6

What does the ADH cause to happen?

Water to be retained, sodium will follow

7

in SIDAH, is there hyper or hyposecretion of ADH?

HYPER!

8

What is the etiology of SIADH?
Explain how this etiology works?

Ectopic tumors: secreting chemicals that act like ADH, so they bind to ADH receptors on the collecting tubules in the kidney

9

What does SIADH cause to happen? (3)

1. ^^ Water Rention, Na+ will then follow
2. Dilutional Hyponatremia (fluid in excess retained, Na+ in normal concentration
3. RAAS not happening (d/t high BP of the fluid being retained, therefore Na+ not being reabsorbed.)

10

What is the treatment for SIADH?
1. Mild
2. The other 2 Tx's

1. restrict fluids
2. Diuretics
3. ADH antagonsits (block receptors)