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Diuretics Review
Important Points
21
Pharmacology
Undergraduate 4
08/30/2010

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Cards

Term
What percent of body weight is comprised of water?
Definition
60%
Term
List fluid compartment from highest to lowest.
Definition
Intracellular > Extracellular > Plasma
Term
Normal GFR Rate
Definition
125 ml/min
Term
What cells regulates renin release?
Definition
Juxtaglomerular cells and macula densa cells.
Term
Which part of the kidney is responsible for the most water absorption?
Definition
Proximal Tubule (PCT)
Term
Where is the water absorbed in the Loop of Henle?
Definition
Water is absorbed in the thin ascending Loop of Henle. The thick ascending Loop of Henle is water impermeable.
Term
Whats so special about the distal tubule?
Definition
-Early portion of DCT uses Na/CL symporter activity.

-Later segment resabsorb Na+ in via an aldosterone-dependent manner.
Term
How does aldosterone decrease water excretion?
Definition
Aldosterone increase formation of Na/K ATPase proteins in DCT and increases Na+ reabsorption.
Term
Vasopressin
Definition
Vasocontrictor
Term
What is the most commonly used diuretic?
Definition
Thiazides
Term
What is the MoA of thiazides?
Definition
-Block Na/CL reabsorption in PCT.

-
Term
Where in the nephron does thiazides work?
Definition
PCT
Term
Which diuretic agents causes loss of K?
Definition
Thiazide
Term
What are some major side effects of thiazides?
Definition
-Hypokalemia

- decrease inuslin and worsen diabetes mellitus

-hyperuricemia

-lithium toxicity
Term
Which diuretic can be used for open angle glaucoma?
Definition
Carbonic Anhydrase
Term
What limits the use of carbonic anhydrase as a diuretic?
Definition
Acidosis
Term
Dorsalamide
Acetazolamide
Methazolamide
Definition
Carbonic anhydrase.
Term
Furosemide
Bumetanide
Torsemide
Ethacrynic Acid
Definition
Loop Diuretic or High Ceiling Diuretic
Term
MoA of Loop Diuretics
Definition
Block CL dependent Na/K in Loop of Henle.
Term
What is ethacrynic acid used for?
Definition
Diuretic
Term
What happens if you use thiazides on a patient with low GRF?
Definition
No effect.
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