Cardiovascular Pharmacology NCLEX RN Nursing Practice Question
The nurse caring for a client with a history of atrial fibrillation is prescribed dofetilide to control the dysrhythmia. What assessment should the nurse prioritize before administering the medication?
Correct Answer: C
Rationale: Dofetilide can prolong the QT interval, increasing the risk of torsades de pointes, so monitoring the ECG for QT prolongation is critical.