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Questions and Answers
What is the primary action of Class 4 antiarrhythmics like verapamil and diltiazem?
Which condition is NOT indicated for the use of Class 4 antiarrhythmics?
What should be assessed before administering Class 4 antiarrhythmics?
What is a common side effect of non-dihydropyridine calcium channel blockers?
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How do Class 4 antiarrhythmics affect cardiac cellular activity?
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Study Notes
Class 4 Antiarrhythmics - Calcium Channel Blockers
- Verapamil and Diltiazem are Class 4 antiarrhythmics.
- They are Calcium Channel Blockers
- Mechanism of Action (MOA): They relax vascular smooth muscle, causing vasodilation. They also decrease cardiac cellular excitability and contractility.
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Indications:
- Arrhythmias
- Hypertension (HTN)
- Angina
- Side Effects/Adverse Effects (SE/AE): Dysrhythmias
- Important Note: Verapamil and Diltiazem are non-dihydropyridines.
- Nursing Considerations: Assess heart rate (HR) and blood pressure (BP) before administering these medications.
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Description
This quiz explores Class 4 antiarrhythmics, specifically Verapamil and Diltiazem. Understand their mechanism of action, indications for use, and potential side effects. Test your knowledge on nursing considerations and the role of these drugs in managing arrhythmias, hypertension, and angina.
