A 60-Year-Old Man Comes to the Emergency Department with Dizziness

question 529

Multiple Choice

A 60-year-old man comes to the emergency department with dizziness and palpitations.  He woke up this morning with an intermittent pounding sensation in his chest.  The patient has occasionally experienced a similar sensation in the past and did not think it was serious.  Later, while mowing the lawn, he became lightheaded and had to sit down to avoid passing out.  After receiving the appropriate workup, the patient is diagnosed with a cardiac arrhythmia and started on a medication known to prolong the QT interval.  However, the drug is associated with a lower incidence of torsade de pointes than other QT-prolonging agents.  Which of the following medications was most likely used in this patient?

• A)Adenosine
• B)Amiodarone
• C)Digoxin
• D)Esmolol
• E)Lidocaine
• F)Procainamide
• G)Verapamil

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