JACC Heart FailureRuppert et al.RCT
Omecamtiv mecarbil appeared less effective in HFrEF patients with prolonged QRS (≥120 ms) without CRT, but remained beneficial in CRT-treated patients regardless of QRS duration.
In patients with HFrEF, omecamtiv mecarbil appears less effective in those with prolonged QRS duration who do not have a CRT device, but remains beneficial in CRT-treated patients regardless of QRS duration.


