Arrhythmias USMLE Step 1 Practice Question
A 30-year-old woman with known Wolff-Parkinson-White syndrome presents with sustained palpitations and chest discomfort. Vital signs: BP 118/76 mmHg, HR 180 bpm, RR 18, SpO2 98% on room air. She denies syncope. ECG demonstrates regular wide-complex tachycardia at 180 bpm consistent with antidromic AV reentrant tachycardia. Troponin is normal. She takes no cardiac medications. Which medication is most appropriate for acute termination of this arrhythmia?
Answer choices
- AProcainamideCorrect answer
- BDigoxin
- CVerapamil
- DAdenosine
- EAtropine
- FMetoprolol
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