ATI LPN
Pharmacology and the Nursing Process 10th Edition Test Bank
Chapter 25 : Antidysrhythmic Drugs Questions
Question 1 of 5
Which patient-teaching instructions are appropriate for a patient taking an antidysrhythmic drug? (Select all that apply.)
Correct Answer: A,B,E
Rationale: Appropriate instructions include not chewing/crushing extended-release forms, taking with food for GI distress, and limiting caffeine due to its cardiac stimulant effects. Doubling doses, using antacids, or reporting wax matrices in stool (normal for some formulations) are incorrect.
Question 2 of 5
The nurse is monitoring for adverse effects in a patient who is receiving an amiodarone infusion. Which are adverse effects for amiodarone? (Select all that apply.)
Correct Answer: B,D,F,G
Rationale: Amiodarone can cause constipation, QT prolongation, hypotension, and blue-gray skin discoloration due to its complex pharmacology. Tachycardia, chest pain, and headache are not typical adverse effects.
Question 3 of 5
The nurse is preparing to administer a bolus dose of verapamil as follows: 'Give 5-mg bolus of verapamil, IV push, over 2 minutes. May repeat in 30 minutes if needed.' The medication is available in a 2.5-mg/mL strength solution. Identify how many milliliters will the nurse draw into the syringe for this dose.
Correct Answer: 2 mL
Rationale:
To calculate: 2.5 mg/1 mL = 5 mg/x mL. Cross-multiply: (2.5 * x) = (1 * 5); 2.5x = 5; x = 5/2.5 = 2 mL.
Question 4 of 5
The nurse is reviewing the classes of antidysrhythmic drugs. Amiodarone is classified on the Vaughan Williams classification as a class III drug, which means it works by which mechanism of action?
Correct Answer: B
Rationale: Amiodarone, a Vaughan Williams class III drug, prolongs the action potential duration by delaying repolarization in phase 3, thus extending the refractory period. The other options describe mechanisms of other antidysrhythmic classes.
Question 5 of 5
A patient is taking procainamide for a cardiac dysrhythmia. The nurse will monitor the patient for which possible adverse effect?
Correct Answer: D
Rationale: Procainamide, a class Ia antidysrhythmic, can cause gastrointestinal side effects like diarrhea. Bradycardia, shortened QT interval, and dyspnea are not commonly associated with procainamide.