(A) Risk for all-cause mortality (MH odds ratio) in patients with QP vs. BP LV leads. (B) Risk of all-cause mortality (hazard ratio, unadjusted) in patients with QP vs. BP LV leads. (C) Risk of all-cause mortality (hazard ratio, adjusted) in patients with QP vs. BP LV leads. BP, bipolar; CI, confidence interval; LV, left ventricular; Qp, quadripolar.