SNS Blockers: Beta-Blockers

Question 1

Medications

Answer 1

“-olol”

• Atenolol
• Metoprolol
• Propranolol

Question 2

Actions

Answer 2

• Blocks beta receptors in the heart
• Decreases HR and cardiac muscle contraction
• Vasodilates which increased blood flow to the kidneys, leading to a decrease in renin

Question 3

Indications

Answer 3

• HTN
• Angina
• Tachyarrhythmias
• Migraine headaches
• MI
• Glaucoma
• HF
• Hyperthyroidism

Question 4

Contraindications

Answer 4

• Acute/unstable HF, bradycardia, and heart block

- Bronchospasm, COPD, and acute asthma

Question 5

Cautions

Answer 5

• Renal and hepatic dysfunction

- Diabetes

Question 6

Adverse effects

Answer 6

• CNS: HA, fatigue, dizziness, depression, sleep issues, disorientation, memory loss
• CV: bradycardia, hypotension
• Pulmonary: bronchospasm, laryngospasm, cough, pulmonary edema
• GU: decreased libido and impotence
• Alterations in glucose levels

Question 7

Drug-Drug interactions

Answer 7

• Clonidine
• NSAIDs
• Insulin/hypoglycemic agents

Question 8

Assessment

Answer 8

-History of lung conditions or diabetes

Question 9

Implementation

Answer 9

• Take apical pulse prior to administering and hold if below 60 bpm
• Do not abruptly stop medication
• Patients with diabetes should monitor blood glucose closely