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USMLE1 Renal Pharm
N/A
15
Medical
Graduate
04/14/2011

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Cards

Term
Mannitol
Mech
Use
Tox
Definition
Osmotic diuretic.
Shock, drug OD, high intracranial pressure.
Pulmonary edema, dehydration. CI: anuria, CHF.
Term
Acetazolamide
Mech
Use
Tox
Definition
Carbonic anhydrase inhibitor. Self-limited NaHCO3 diuresis.
Glaucoma, urinary alkalinization, metabolic alkalosis, altitude sickness.
Hyperchloremic metabolic acidosis (normal anion gap), neuropathy, NH3 toxicity, sulfa allergy.
Term
Furosemide
Mech
Use
Tox
Definition
Sulfonamide loop diuretic. Inhibits Na/K/Cl cotransport on thick ascending limb. Increases calcium excretion. Also increases prostaglandins, increasing renal blood flow/GFR.
Edema, HTN, hypercalcemia.
OHDANG!: Ototoxicity, Hypokalemia, Dehydration, Allergy (sulfa), Nephritis (interstitial), Gout (hyperuricemia). Also diuretic alkalosis.
Term
Ethacrynic acid
Mech
Use
Tox
Definition
Same as furosemide, but not a sulfa drug.
Pts with sulfa allergies.
Same as furosemide except allergies.
Term
Hydrochlorothiazide
Mech
Use
Tox
Definition
Inhibit NaCl reabsorption in early DCT. Reduces Ca excretion (only one!)
HTN, CHF, hypercalciuria, nephrogenic DI.
Hypokalemia, diuretic metabolic alkalosis, hyponatremia, hyperglycemia, hyperlipidemia, hyperuricemia, hypercalcemia. Sulfa allergy.
Term
Spironolactone
Mech
Use
Tox
Definition
K sparing diuretic. Aldosterone competitive antagonist. Acts in cortical collecting duct.
Hyperaldosteronism, K depletion, CHF, hirsuitism.
Hyperkalemia, anti-androgen effects (gynecomastia), acidemia.
Term
Eplerenone
Mech
Use
Tox
Definition
K sparing diuretic. Aldosterone competitive antagonist. Acts in cortical collecting duct.
Hyperaldosteronism, K depletion, CHF.
Hyperkalemia, acidemia. Like spironolactone but with less anti-androgenic effects.
Term
Triamterene
Mech
Use
Tox
Definition
K sparing diuretic. Blocks Na channels in cortical collecting duct - similar affect to aldosterone antagonists.
Hyperaldosteronism, K depletion, CHF.
Hyperkalemia, acidemia.
Term
Amiloride
Mech
Use
Tox
Definition
K sparing diuretic. Blocks Na channels in cortical collecting duct - similar affect to aldosterone antagonists.
Hyperaldosteronism, K depletion, CHF.
Hyperkalemia, acidemia.
Term
What is "contraction alkalosis"?
Definition
In low volume state, angiotensin II concentration increases. One effect is increased Na/H exchange in PCT, causing alkalosis.
Term
What is "paradoxical aciduria"? When is it seen?
Definition
Seen in hypokalemic state.
In hypokalemia, Na/H exchange is favored over Na/K exchange in PCT. This causes aciduria, even if body is in alkalotic state.
One mechanism of diuretic metabolic alkalosis.
Term
Captopril
Mech
Use
Tox
Definition
ACE inhibitor. Reduces ATII levels, raises bradykinin levels. Increases renin (loss of feedback inhibition).
HTN, CHF, prevention of diabetic renal disease.
CAPTOPRIL: Cough, Angioedema, Potassium increase, Taste changes, hypOtension, Pregnancy CI, Rash, Increased renin, Low ATII. Avoid with bilateral renal artery stenosis: kidneys rely on ATII mediated efferent arteriole constriction to maintain GFR.
Term
Enalapril
Mech
Use
Tox
Definition
ACE inhibitor. Reduces ATII levels, raises bradykinin levels. Increases renin (loss of feedback inhibition).
HTN, CHF, prevention of diabetic renal disease.
CAPTOPRIL: Cough, Angioedema, Potassium increase, Taste changes, hypOtension, Pregnancy CI, Rash, Increased renin, Low ATII. Avoid with bilateral renal artery stenosis: kidneys rely on ATII mediated efferent arteriole constriction to maintain GFR.
Term
Lisinopril
Mech
Use
Tox
Definition
ACE inhibitor. Reduces ATII levels, raises bradykinin levels. Increases renin (loss of feedback inhibition).
HTN, CHF, prevention of diabetic renal disease.
CAPTOPRIL: Cough, Angioedema, Potassium increase, Taste changes, hypOtension, Pregnancy CI, Rash, Increased renin, Low ATII. Avoid with bilateral renal artery stenosis: kidneys rely on ATII mediated efferent arteriole constriction to maintain GFR.
Term
Chlorthalidone
Definition
A thiazide diuretic
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