Practice question

Answer the question and get instant feedback.

HardCardiologyHeart Failure-CRTus-abimus-usmle-step-3

A 64-year-old with HFrEF and EF 25% asks about device therapy. QRS 160 ms with LBBB, NYHA II despite GDMT. Next step?

Practice more on iatroX

Educational content. Not a substitute for clinical judgement or local policy.