Fig. 2. ( A ) Graph representing mean (SD) arterial blood pressure at baseline and over the course the protocol with hypercapnic acidosis compared to normocapnia. ( B ) Graph representing mean (SD) arterial lactate concentrations at baseline and over the course the protocol with hypercapnic acidosis compared to normocapnia.* Significantly different from normocapnia ( P < 0.05, ANOVA) .