Class II Antiarrhythmic

Question 1

Medications

Answer 1

• Acebutolol
• Esmolol
• Propranolol

Question 2

Actions

Answer 2

• Competitively block the beta receptor sites in the heart and kidneys
• Decrease HR, cardiac excitability, and CO
• Slow conduction through the AV node

Question 3

Indications

Answer 3

-Treatment of supraventricular tachycardia and PVCs

Question 4

Contraindications

Answer 4

• Sinus bradycardia, AV block, cardiogenic shock, CHF, asthma, or respiratory depression
• Pregnancy/lactation

Question 5

Caution

Answer 5

• Diabetes
• Thyroid dysfunction
• renal or hepatic dysfunction

Question 6

Adverse effects

Answer 6

• Related to the effects of blocking beta receptors in the SNS
• CNS: dizziness, insomnia, dreams, fatigue
• CV: hypotension, bradycardia, AV block, arrhythmias
• Respiratory: bronchospasm and dyspnea
• GI: N/V, anorexia
• Misc: loss of libido, decreased exercise tolerance, alterations in blood glucose

Question 7

Drug-Drug interactions

Answer 7

• Verapamil

- Insulin