PHARM WEEK 3 CARDIO AGENTS PART 1B Flashcards
ACE inhibitors inhibit formation of __ __
angiotensin II (vasoconstrictor)
ACE inhibitors block the release of __, which then causes __ ___ and __ __
aldosterone
Na+ excretion
K+ retention
ACE inhibitors cause (little/significant) change in cardiac output
choose one
little
ACE inhibitors ___ peripheral vascular resistance
lower
ACE inhibitors: Uses (5)
- Primarily used to treat Hypertension
- Some also treat heart failure
- African-Americans & the elderly do NOT respond well to these alone
- Should not be used in pregnancy
- Most can be taken with food
Examples of ACE inhibitors:
- benazepril(Lotensin)
- captopril (Capoten)
- enalapril maleate
(Vasotec) - fosinopril (Monopril)
- lisinopril (Prinivil, Zestril)
- moexipril (Univasc)
- perindopril (Aceon)
- quinapril (Accupril)
- ramipril (Altace)
- trandolapril (Mavik)
- captopril (Capoten)
-PRIL
most likely be an ace inhibitor
-LOL
beta blockers
ACE inhibitors: Side effects
- Constant irritated cough* (can produce hernia, bowel/bladder incontinence)
- Hypotension
- Nausea
- Dizziness
- Rash
- Taste disturbance
- Hyperkalemia
- Tachycardia
- Impotence
- Intestinal angioedema
- Agranulocytosis
- Anaphylactoid reaction
When taking ACE inhibitors try to avoid __ __ b/c they are made of potassium. Try not to give __ which is potassium sparing.
salt substitutes
Aldactone
Angiotensin II Receptor Blockers (ARBs)
How are they similar to ACE inhibitors?
- Prevent release of aldosterone
- Act on renin-angiotensin system
- Less effective in treating HTN in African Americans
Angiotensin II Receptor Blockers (ARBs)
Differences from ACE inhibitors?
- ARBs selectively binds to angiotensin II receptors in the blood vessels to prevent vasoconstriction
- ACE inhibitors prevent conversion of angiotensin I to angiotensin II
ARBs cause __ of the blood vessels and decrease the release of __
vasodilation
aldosterone
ARBs cause a decrease in __ __
They don’t cause __ __ __ like ACE inhibitors (just occasional __)
peripheral resistance
constant irritated cough
cough
ARB prototype
Losartan potassium (Cozaar)
Other examples of ARBs
Valsartan (Diovan)
Olmesartan (Benicar)
Irbasartan (Avapro)
ARB side effects
- dizziness
- diarrhea
- insomnia
- occasional cough
-ARTAN =
most likely ARB
Direct Renin Inhibitor prototype:
aliskiren (Tekturna) - 1st FDA approved direct renin inhibitor to treat HTN
Direct Renin Inhibitor binds with __ therefore decreasing angiotensin I and II, and oldster levels
renin
Direct Renin Inhibitor can be used __ or __ with another agent
alone; combined
Direct Renin Inhibitors have an additive effect with
thiazide or ARB
Calcium Channel Blockers prevents the movement of calcium into __ and __ (__) muscles; interferes with the ability to __ causing __.
cardiac; smooth (arterial)
contract; vasodilatation
Calcium channel blockers slow __ __
cardiac impulses
Calcium channel blockers are used to treat __ __ and are also used for __ and __
chronic HTN
angina & dysrhythmias
Calcium channel blockers are highly __-___
protein-bound
Prototype for calcium channel blockers:
Amlodipine (Norvasc)
Norvasc - highly protein bound - __ %
98%
Norvasc - half life
30-60 hours dosed daily
side effects of Amlodipine (Norvasc)
Peripheral edema Headache Flushing Dizziness Nausea Fatigue Flush, dizziness, Ankle edema, bradycardia
adverse rxns to Amlodipine (Norvasc)
Hypotension
Angina
Angioedema
Heart block
Note: Do not take with grape fruit juice due to reduced presystemic clearance of the drug and subsequent increase in bioavailability that could lead to hypotension.
you do not excrete __ __ __ and __ __ AS QUICLY when taken with grapefruit juice
calcium channel blockers
beta blockers
If a patient experiences angioedema as an adverse effect of Amlodipine (calcium channel blocker), what should you give and why?
give benadryl or epinephrine
may have a risk of airway obstruction d/t edema of the tongue
Direct-Acting Arteriolar Vasodilators causes
relaxation of the vascular smooth muscles, mainly the arteries, causing vasodilatation
Direct-Acting Arteriolar Vasodilators are used in __ __ or __ __
severe HTN
hypertensive emergencies