A patient is diagnosed with junctional tachycardia. Which of the following medications should the nurse suspect as the cause of this rhythm?
1. Coumadin
2. digoxin
3. aspirin
4. Coreg
2
Rationale: Digitalis decreases the automaticity of the AV node and slows conduction between the SA and AV node so therefore, digitalis toxicity can precipitate junctional rhythms. The dysrhythmia is treated by withholding the medication. Coumadin, aspirin, or Coreg are not associated with junctional tachycardia.
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