Fig. 6.
Recovery from ischemia-reperfusion injury was similar in summer and winter hearts. A: LVDPs were similar in summer (n = 8) and winter (n = 9) hearts throughout ischemia-reperfusion injury. No significant differences were found. B: LVEDPs were similar during reperfusion, suggesting no differences in severity of ischemia-reperfusion between groups. LVEDPs were higher in summer than winter hearts at 20 and 25 min of ischemia. ***P < 0.001 vs. winter torpid (by 2-way ANOVA with Bonferroni's post test). C: maximal ischemia pressures of winter hearts were compared with each heart's time since the most recent interbout arousal (IBA). No correlation between severity of ischemic contracture and IBAs was found (R2 = 0.1066, P = 0.3911).