Summary of the effects of Re to suppress alternans. Re exerted similar effects to suppress alternans recorded in cat VMs, cat AMs, human AMs, [Ca2+]i transients recorded from cat VMs, and cat Langendorff-perfused cat hearts. Compared with control (Ctrl) alternans, the effects of Re were statistically significant in each series of experiments. The ordinate shows the alternans ratio (AR; see methods).