Fig. 2From: Endothelial dysfunction and myocardial injury after major emergency abdominal surgery: a prospective cohort studyCorrelations between reactive hyperemia index and nitric oxide biomarkers. A. The correlation between reactive hyperemia index (RHI) and L-arginine. B. The correlation between RHI and asymmetric dimethyl arginine (ADMA). C. The correlation between RHI and the L-arginine/ADMA ratio. r = Pearson correlation coefficientBack to article page