Antihypertensives Flashcards

(33 cards)

0
Q

clonidine MOA

A

stimulate medullary a2 receptors –> decrease peripheral sympathetic activity

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1
Q

diuretics are the first choice for HTN in which patients? (5)

A
Age 65+
African descent
CHF
stroke
osteoporosis
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2
Q

side effects of clonidine (2)

A

xerostomia

sedation/CNS

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3
Q

a-1 antagonist MOA

A

dilation

block a1 —> reduce vasoconstriction

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4
Q

side effects of a1 antagonists (3)

A

Postural hypotension
increased renin/water retention
Reflex tachycardia

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5
Q

only indication for B-blocker monotherapy?

A

young and white

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6
Q

B-blockers are the preferred drug for HTN w/ (3)

A

Angina
post-MI
migraine

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7
Q

B-blockers MOA (3)

A

reduce cardiac output
reduce renin secretion
decrease sympathetic vasomotor tone

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8
Q

labetalol use (2)

A

decrease BP in HTN emergencies

pregnancy HTN emergenies

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9
Q

Carvedilol use

A

long term monotherapy for HTN & CHF

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10
Q

hydralazine MOA

A

nitric oxide –> dilates arterioles but not veins

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11
Q

hydralazine big side effects (2)

A

ischemic arrhythmias

SLE in slow acetylators

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12
Q

Sodium nitroprusside side effects (5)

A
Cyanide accumulation
Metabolic acidosis
Arrhythmias
Excessive hypotension
Death
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13
Q

Indapamide MOA

A

direct vasodilator, probably a Ca channel blocker

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14
Q

Minodoxil MOA, effects

A

opens K+ channels, stabilizes membranes

dilates arterioles, not veins

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15
Q

Minodoxil use

A

severe and refractory HTN

16
Q

chronic oral HTN tx (3)

A

Hydralazine
Minodoxil
CCBs

17
Q

IV Emergency tx of HTN (3)

A

Nitroprusside
Fenoldopam
some CCBs

18
Q

fenoldopam MOA & effect

A

specific agonist to D1 receptor —> relaxes arteriolar smooth muscle

19
Q

fenoldopam side effects (3)

A

reflex tachycardia
headache
flushing

20
Q

nifedipine characteristics (3)

A

strongest vasodilator
increases HR
most likely to produce reflex tachycardia

21
Q

CCB effects for HTN (3)

A

Relaxes all smooth muscles
decreased cardiac contractility
slowed SA/AV node

22
Q

verapamil 4 characteristics

A

strongest cardiac effects
worst vasodilator
decreases HR
SA & AV node depression

23
Q

nifedipine specific side effects (2)

A

reflex tachycardia

gingival hyperplasia

24
verapamil specific side effect
constipation
25
CCB general side effects (4)
headache flushing dizziness peripheral edema
26
why will vasodilators effects diminish over time (2)
reflex tachycardia | increased renin secretion
27
vasodilator side effects (many)
reflex tachycardia, increased contraction increased renin secretion, fluid retention headaches, flushing, palpitations, dizziness
28
1st choice drug for HTN in diabetes, chronic renal disease, left ventricular hypertrophy
ACE inhibitor
29
ACE inhibitor effects (2)
Decreased afterload: AngII-induced vasoconstriction | Decreased preload: decreased aldosterone release
30
ACE inhibitor contraindications (3)
2nd & 3rd trimester of pregnancy NSAID use- decreases vasodilation Bilateral renal aa. stenosis
31
ACE inhibitors are the drug of choice for which pts? (7)
``` CKD Type 2 diabetes Age 65+ MI CHF stroke, asthma ```
32
ARBs are a good drug for who? (4)
CHF stroke CKD Type 2 Diabetes