flashcard test
What drug class does HCTZ belong to?
Thiazide diuretics
What drug class does chlorthalidone belong do?
Thiazide diuretics
What drug class does metolazone belong to?
Thiazide diuretics
How often is metolazone dosed?
1x/week (most potent thiazide diuretic)
What is the MOA of thiazide diuretics?
Inhibits sodium reabsorption in the distal tubule
What is the dose for HCTZ?
25mg (can start at 12.5 mg); if you go higher than 25mg, just increase side effects, not efficacy
What are 4 ADRs for thiazide diuretics?
- Orthostatic hypotension
What are 3 precautions for thiazide diuretics?
- Caution in sulfa allergic pts
Counseling points for thiazide diuretics
- Get up slowly from lying down/sitting
What drug class does Furosemide belong to?
Loop diuretics
What class does Bemetanide belong to?
Loop diuretics
What drug class does Torsemide belong to?
Loop diuretics
What is the MOA of loop diuretics?
Inhibits active transport of Na, Cl, and K in the thick ascending limb of the Loop of Henle, causing excretion of these ions (works earlier in kidney than thiazide diuretics)
What are 3 uses for loop diuretics?
- CHF (preferred diuretic)
What is the initial dosing for (A) Furosemide (B) Bumetanide and (C) Tursemide?
A: Furosemide: 10-40mg/day
What is the goal dosing for loop diuretics?
-Lowest possible dose or consider d/c’ing
What is the onset and duration of action for loop diuretics?
Oral: onset 30min, duration 6 hrs
How does the PO dose translate to the IV dose for loop diuretics?
IV dose = 1/2 PO dose
What are 4 ADRs of loop diuretics?
- Electrolyte abnormalities (decreased K, Na, Ca, Mg; increased Uric acid and glucose)
What are 2 precautions of loop diuretics?
- Caution in sulfa allergic pts
What drug class does spironolactone belong to?
Potassium Sparing Diuretics (aldosterone receptor blockers)
What drug class does eplerenone belong to?
Potassium sparing diuretics (aldosterone receptor blockers)
What is the MOA of potassium sparing diuretics (aldosterone receptor blockers)?
NAME?
What drug class does triamterene belong to?
Potassium sparing diuretics
What drug class does amiloride belong to?
Potassium sparing diuretics
What is the MOA of potassium sparing diuretics?
Blocks Na reabsorption and K excretion; effect is INDEPENDENT OF ALDOSTERONE
When are potassium sparing diuretics considered?
Not first line; may be used to treat HTN/chronic HF when pt is resistant to first line therapies
What is an ADR of all potassium sparing diuretics?
Hyperkalemia
What is an ADR of spironolactone?
Gynecomastia; menstrual irregularities
What is an advantage/disadvantage of eplerenone?
More selective, thus less side effects (& more expensive)
What is an important counseling point for potassium sparing diuretics?
-Salt substitutes –> can exacerbate hyperkalemic effect
When would you consider using aldosterone blockers for the treatment of HF?
-Stages C and D
What are the doses for aldosterone blockers?
Spironolactone: 12.5-25 mg/day
If a medication ends in “pril” what drug class does it most likely belong to?
Angiotensin converting enzyme inhibitors (ACE-I)
What is the MOA of ACE Inhibitors?
NAME?
How often are ACE Inhibitors dosed?
-Often dosed 1x/day; sometimes 2x/day
What is enalapril?
It is a prodrug of enalaprilat (only ACE-I that is available for IV dosing)
(A) What is the most commonly used ACE-I and (B) what is the dosing?
A: Lisinopril
What are ACE Inhibitors used to treat?
HTN, CKD, CHF (1st line for all 3 dz’s)
What are 5 ADRs for ACE Inhibitors?
- Cough (up to 20% pts, d/t increased bradykinin)
What are 4 contraindications for ACE Inhibitors?
- Pregnancy category C/D (2 forms of BC if used)
What are 3 drug interactions of ACE Inhibitors and ARBs?
- Potassium supplements
Why should pts not use NSAIDs long term if they are on an ACE-I / ARB (describe MOA)?
NSAIDs block prostaglandins, another inflammatory mediator. Prostaglandins work on AFFERENT arterioles in kidney, causing vasodilation. NSAIDs therefore block vasodilation of the afferent arterioles in kidney. It would be bad to block the afferent arteriole w/ NSAIDs and the efferent arteriole w/ an ACE-I/ARB
What are the counseling points for ACE-I?
- Monitor serum K + SCr (increase >30% bad)
If a drug name ends in “sartan” what drug class does it most likely belong to?
ARB (angiotensin receptor blockers)
What is the MOA of ARBs?
NAME?
What are ARBs used for treating?
The same things as ACE-I (first line for HTN, CKD, & chronic HF). If cough develops on an ACE-I, then an ARB will be used
How often are ARBs dosed?
Often once daily
What are 5 ADRs for ARBs?
- Hypotension / orthostatic hypotension
What are the contraindications of ARBs?
- Pregnancy Category C/D (2 forms of BC if used)
What are the counseling points for ARBs?
- Monitor K and for angioedema
When should ACE-I / ARBs be used in the tx of HF?
All stages of HF
What drug class does aliskiren belong to?
Renin inhibitor
What are 3 ADRs of Renin Inhibitors?
- Do not use in combo w/ an ACE-I/ARB (all work on same system)
What are the cardioselective (dose-dependent) beta blockers?
AMEBBA
What are the mixed alpha and beta blockers?
-Carvedilol (take w/ food)
What are the beta blockers with intrinsic sympathomimetic activity (ISA)?
CAPP
What are the non-specific beta blockers?
NAME?
Which beta blocker is also a class II antiarrythmic agent?
Sotalol (Betapace)
What is the MOA for beta blockers?
-Beta-1 receptors are located in the heart; beta-2 receptors are located in the lungs
How often is atenolol dosed?
1x/day
How often is metoprolol succinate dosed?
1x/day (extended release form)
How often is metoprolol tartrate dosed?
2x/day
When would beta blockers be used for the tx of HTN?
In pts with a significant cardiac history (HF, post-MI, CAD, CKD)