AM VaultPractice questions › Adult health: medicine › Heart failure
Heart failure
A practice question in the style of the AMC Part 1 MCQ exam. Choose your answer to see the explanation.
A 63-year-old woman with HFrEF, EF 28 percent despite optimal therapy, has left bundle branch block with a QRS of 160 ms. Which device gives the most benefit?
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The answer is B: Cardiac resynchronisation therapy.
Resynchronisation helps most with LBBB of 150 ms or more, because it makes the ventricles contract together again.
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This question comes from Week 2 of AM Vault: Cardiology II. That week has 132 more exam-style questions like it, 4 short lessons and 150 flashcards. The course starts free with Week 1 and reaches this topic in week 2, as part of a six-month plan with full mock exams along the way.
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