Fig. 1. Time course effects of force of contraction of isolated human right atrial trabeculae during a 30-min hypoxic challenge followed by 60 min of reoxygenation in control (•), control + 5-HD (⋄), control + HMR 1098 (▵), and control + DPX (▿) groups. 5-HD = 5 hydroxydecanoate; DPX = 8-cyclopentyl-1,3-dipropylxanthine. Data are mean ± SD. #P < 0.05 vs.  baseline value for all groups.