Novel hematologic inflammatory parameters to predict acute mesenteric ischemia

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Acute mesenteric ischaemia (AMI) is an emergency condition that requires urgent diagnosis. Neutrophil/lymphocyte ratio (NLR) and platelet/lymphocyte ratio (PLR) have been studied as inflammatory biomarkers in atherosclerosis, but data regarding AMI are lacking. The study population included patients with AMI (n = 46) versus age and sex-matched healthy controls (n = 46). Computed multidetector tomographic angiography was performed to diagnose AMI. NLR and PLR were calculated using complete blood count. C-reactive protein (CRP) levels were also analyzed. Neutrophil levels and lymphocytes were significantly higher in patients with AMI than in the control individuals (P < 0.001 and P = 0.43, respectively). NLR levels were significantly higher in patients with AMI compared with that in the control individuals (P < 0.001). Platelet levels did not reach statistical significance between the groups (P = 0.709). However, patients with AMI had significantly higher PLR levels than the control group (P = 0.039). CRP levels on admission were higher in patients with AMI in comparison with control individuals. There was also a positive correlation between NLR and CRP (r = 0.548, P < 0.001), and between PLR and CRP (r = 0.528, P < 0.001). NLR level greater than 4.5, measured on admission, yielded an area under the curve value of 0.790 (95% confidence interval 0.681–0.799, sensitivity 77%, specificity 72%), and PLR level of greater than 157 yielded an area under the curve value of 0.604 (95% confidence interval 0.486–0.722, sensitivity 59%, specificity 65%). Patients with AMI had increased NLR, PLR, and CRP levels compared with controls. Increased NLR and PLR was an independent predictor of AMI.

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