hypertensive drugs (broadhead) Flashcards
adrenergic neuron blockers prototype name
reserpine (Serpalan, Reserpine); sympatholytic
action of reserpine
makes norepinephrine unavailable
indications for reserpine
hypertension (not first line of choice due to severe adverse effects)
side effects of reserpine
severe depression and risk for suicide, bradycardia, orthostatic hypotension, gastric iritation, diarrhea
adverse side effects of reserpine
suicide risk
contraindications of reserpine
pregnancy category D, peptic ulcer disease, do not use with MAOIs
special considerations for reserpine
monitor for depression, monitor BP and HR, report dizziness
centrally acting alpha2 agonists prototype name
clonidine (Catapres); sympatholytic
action of clonidine
inhibits innervation of sympathetic neurons in the CNS resulting in bradycardia and decreases cardiac output, causes vasodilation
indications for clonidine
hypertension, severe pain, prophylaxis for migraine headaches, dysmenorrhea, ADHD
side effects for clonidine
drowsiness, dizziness, dry mouth, rebound hypertensive crisis if abruptly discontinued
adverse effects of clonidine
do not abruptly discontinue, angioedema
contraindications of clonidine
anticoagulant therapy, pregnancy category c
special considerations for clonidine
monitor CNS effects, take at bedtime
alpha1 adrenergic blockers prototype name
doxazosin (Cardura); sympatholytic
action of doxazosin
blocks alpha 1 adrenergic receptors (blocks vasoconstrictive effects) resulting in both venous and arteriolar vasodilaiton
indications of doxazosin
hypertension, benign prostatic hypertrophy (BPH)
side effects of doxazosin
orthostatic hyposension, reflex tachycardia, headache
adverse effects of doxazosin
dysrhythmias
contraindications of doxazosin
history of syncope, children
special considerations for doxazosin
monitor BP, take drug at bedtime, do not take with sildenafil (Viagra) may increase risk for hypotension
prototype for beta adrenergic blockers
atenolol (tenormin) and metoprolol (lopressor); sympatholytic)
action of atenolol and metoprolol
block cardiac beta1 receptors resulting in decreased HR and contractility (causes decreased cardiac output and supresses reflec tachycardia); blocks renal beta1 receptors decreasing release of renin; decreases peripheral resistance of blood vessels
indications of atenolol and metoprolol
hypertension, angina pectoris, decreases mortality following MI, cardiac dysrhythmias, heart failure (only 2 including metoprolol)
side effects of atenolol and metoprolol
bradycardia, heart failure (shortness of breath, edema, cough at night), rebound excitation causing angina or MI with sudden withdrawl
adverse effects of atenolol and metoprolol
cardiac arrest, agranulocytosis, bronchospasm
contraindications of atenolol and metoprolol
bradycardia, severe heart failure, cardiogenic shock
special considerations for atenolol and metoprolol
monitor HR is