HTN 4 Flashcards
Which two meds are Aldosterone Antagonists?
1. Spironolactone
- eplerenone
Mechanism of which group of diuretics?
- Blocks aldosterone receptor in distal convoluted renal tubule
- inhibiting sodium and water retention,
- inhibiting vasoconstriction.
Aldosterone Antagonists
Which Aldosterone antagonist?
- is more specific with little affinity for androgen or progesterone receptors—HTN and HF
Eplerenone
What are the 7 side effects of Aldosterone antagonists (Spironolactone, eplerenone)
- *Hyperkalemia,
- *hyponatremia
- *Gynecomastia
- *Menstrual irregularities
- *decreased libido
- *impotence (inability to orgasm/achieve erection)
- GI disturbances
Efficacy/monitoring of which group of meds:
- *Modest diuresis
- *Often used in combo with thiazides and loop diuretics which can counteract the K+ loss
-
*Monitor K+ levels
- Eplerenone greater risk so avoid in DM with microalbuminuria, CrCl <50ml/min or elevated serum creatinine
Aldosterone Antagonists
**When should you adjust dosage of Spironolactone?**
**Adjust in renal impairment**
The drug interactions of thiazides and loops are similar to that of which group of diuretics?
Aldosterone antagonists
What are aldosterone antagonists used for in pediatrics?
**HTN and Diuretic**
Which medication is used in the treatment of female acne and hirsutism?**
Aldosterone antagonists
What is the 1 ADE of Amiloride
**Hyperkalemia**
Amiloride (a K+ sparing diuretic) is usually used in combination with which group of diuretics?
Thiazides (b/c of excessive potassium loss)
Mechanism of which group of meds:
–Blocks the epithelial Na+ channel action proximal to the distal convoluted tubule
- results in cessation of K+ secretion.
Potassium sparing Diuretics (amiloride, triamterene)
What is the side effect of potassium sparing diuretics (amiloride, triamterene)?
**Hyperkalemia**
What disease are potassium sparing diuretics (amiloride, triamterene) contraindicated in?
renal failure
When should you avoid giving potassium sparing diuretics (amiloride, triamterene)?
Avoid in patients also treated w/ ACE-I
Efficacy/monitoring of ________ diuretics
–*Diuretic effect is modest
–*Monitor K+
Potassium sparing diuretics (amiloride, triamterene)