Sympathetic Nervous System Blockers Flashcards
Action
Sympathetic Nervous System Blockers
BETA BLOCKERS
Blocks beta receptors in the heart
Decreases heart rate and cardiac muscle contraction
VASODILATES which increases blood flow to the kidneys, leading to a decrease in the release of renin
INDICATION
Sympathetic Nervous System Blockers
BETA BLOCKERS
HTN angina MI tachyarrythmias migraine headache glaucoma heart failure hyperthyroidism
ADVERSE EFFECTS
Sympathetic Nervous System Blockers
BETA BLOCKERS
Headache, Fatigue, Dizziness, depression, sleep issues, disorientation
Bradycardia, HYPOtension
Decreased Libido and impotence
bronchospasm, laryngospasm, cough, pulmonary edema
alterations in glucose levels
Who is this contraindicated for?
Sympathetic Nervous System Blockers
BETA BLOCKERS
Someone who has: acute/unstable heart failure bradycardia heart block brochospasm COPD acute asthma
CAUTION
Sympathetic Nervous System Blockers
BETA BLOCKERS
Renal and hepatic dysfunction
DIabetes
MEDS
Sympathetic Nervous System Blockers
BETA BLOCKERS
Atenolol
Metoprolol
Propranolol (non selective)
Sympathetic Nervous System Blockers
BETA BLOCKERS
DRUG DRUG Interactions
Do not take with
Clonodine,
NSAIDS
Insulin (hypogycemic agents)
NURSING CONSIDERATIONS
Sympathetic Nervous System Blockers
BETA BLOCKERS
Assess for history of lung conditions or diabetes
Implementation: take apical pulse and hold if less than 60bpm
DO NOT abruptly stop med
Pt’s with Diabetes should monitor glucose closely
ACTION
Sympathetic Nervous System Blockers
ALPHA and BETA BLOCKERS
non-selective adrenergic blocking agents
Blocks norepinephrine at all alpha and beta receptors in the SNS which lowers BP and heart rate
Causes increased renal perfusion and decreased renin
What is a selective or cardioselective BETA blockers?
Second generation beta blockers such as Metroprolol block only Beta1 receptors and so mostly affect the heart and cause a reduction in cardiac output.
What is non selective or non specific BETA Blockers
First generation beta blockers such as propranolol (and the others listed below) are non-selective or nonspecific. That means they block both beta1 and beta2 receptors and so affect the heart, lungs, vascular smooth muscles, kidneys, GI, etc.
Medications
Alpha and Beta Blockers
(non selective adrenergic blocking agents)
Sympathetic Nervous System Blockers
carvedilol
labetalol
DRUG DRUG interaction
Alpha and Beta Blockers
(non selective adrenergic blocking agents)
Sympathetic Nervous System Blockers
anti diabetic agents
CONTRAINDICATION / CAUTIONS
Alpha and Beta Blockers
(non selective adrenergic blocking agents)
Sympathetic Nervous System Blockers
Caution if patient is diabetic
Has heart block
Bradycardia or lung disease/bronchospasm
ADVERSE EFFECTS
Alpha and Beta Blockers
(non selective adrenergic blocking agents)
Sympathetic Nervous System Blockers
Fatigue, HA memory loss, inability to sleep
arrythmia. HYPOtension
bronchospasm, laryngospasm, cough, pulmonary edema
hypoglycemia
rash
diarrhea, nausea, vomiting
impotence, loss of libido
