Beta Blockers USMLE Step 1 Practice Question
A 78 year old man with systolic heart failure and atrial fibrillation develops nausea, confusion, and yellow tinged vision 1 week after starting a new medication. ECG shows frequent premature ventricular contractions, and his serum potassium is low due to concomitant diuretic therapy. Which of the following treatments is most appropriate if his symptoms worsen and life threatening arrhythmia develops?
Answer choices
- AProtamine sulfate
- BAtropine only
- CDigoxin specific antibody fragmentsCorrect answer
- DCalcium gluconate
- EN acetylcysteine
- FPhenytoin
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