Antihypertensives B Flashcards
(190 cards)
What are eight antihypertensive agents?
- Diuretics
- Central-acting Sympatholytics
- Peripheral-acting Sympatholytics
- Beta blockers
- ACE inhibitors
- Angiotensin II antagonists (ARBs)
- Calcium-channel blockers (CCBs)
- Direct vasoldilators
True or False:
Most diuretics are fairly inexpensive.
True
True or False:
Diuretics have a lower side effect profile than other antihypertensives.
False
(They have a higher side effect profile)
True or False:
Diuretics are often used in combination with other antihypertensives.
True
True or False:
When using diuretics, the higher the dose, the more it will lower blood pressure.
False
(BP lowering effects not necessarily dose related)
Which diuretic is most commonly used for blood pressure?
Thiazides
What is the MOA for thiazide diuretics?
- Inhibit Na+ and Chloride reabsorption at distal tubule
- Promotes Na+ and H2O loss
- Decreases blood volume
- Decreases preload
- Lowers BP
What is the thiazide prototype?
Hydrochlorothiazide
What is the route for Hydrochlorothiazide?
PO
What is the usual dose for Hydrochlorothiazide?
12.5 - 50 mg qd
What are three common indications for Hydrochlorothiazide?
- Htn
- Peripheral edema
- HF
How is Hydrochlorothiazide metabolized?
There is no metabolization
(excreted unchanged)
How is Hydrochlorothiazide excreted?
Renal
What are the four side / adverse effects of Hydrochlorothiazide?
- Hypokalemia
- Hypomagnesemia
- Hyperuricemia
- Hyperglycemia
- Hyper-pee-emia
What are six precautions for Hydrochlorothiazide?
- Volume depletion
- Electrolyte abnormalities
- Severe renal impairment
- Arrythmias
- History of gait
- Diabetes
True or False:
Hydrochlorothiazide is generally safe and well-tolerated.
True
What kind of drug is Dofetilide (Tikosyn)?
Dysrhythmic
When Hydrochlorothiazide interacts with Dofetilide (Tikosyn), what happens?
Prolonged QT / other arrythmias
What are the four central-acting sympatholytics?
- Guanfacine (Tenex)
- Clonidine (Catapres)
- Guanabenz (Wytensin)
- Methyldopa (Aldomet)
Which central-acting sympatholytic is the drug of choice for Htn in pregnancy?
Methyldopa (Aldomet)
What is the route for Guanfacine (Tenex)?
PO
(Central-Acting Sympatholytic)
What is the route for Clonidine (Catapres)?
PO
(Central-Acting Sympatholytic)
What is the route for Guanabenz (Wytensin)?
PO
(Central-Acting Sympatholytic)
What is the route for Methyldopa (Aldomet)?
PO
(Central-Acting Sympatholytic)