Fig. 2From: Marked regional endothelial dysfunction in mottled skin area in patients with severe infectionsAnalysis of skin microcirculatory blood flow in patients with knee mottling (n = 10) and in patients without knee mottling (n = 27) at 6 h. Skin blood flow was assessed on the forearm and the knee areas at baseline (a, b), and after acetylcholine iontophoresis (peak value (c and d) and area under curve (auc) (e and f). *P < 0.05. PU perfusion unitsBack to article page