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Year : 2018  |  Volume : 30  |  Issue : 4  |  Page : 223-230

Assessment of calprotectin in ascitic fluid as a marker for spontaneous bacterial peritonitis diagnosis in cirrhotic patients

1 Department of Internal Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt
2 Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt

Correspondence Address:
Fayrouz O Selim
Department of Internal Medicine, Faculty of Human Medicine, Zagazig University, Endocrinology Unit, Egypt. Sharkyia Governorate, Zagazig City, Postal Code: 44519
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ejim.ejim_17_18

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Background Spontaneous bacterial peritonitis (SBP) is a serious infection of ascitic fluid in cirrhotic patients. High mortality associated with the delay in diagnosis and treatment. There is a need for an accurate and a rapid method for SBP diagnosis. Objectives We aimed to evaluate ascitic fluid calprotectin as a diagnostic marker for SBP. Patients and methods Forty four cirrhotic patients were divided into two groups, non-SBP group: 22 patients with cirrhotic ascites without evidence of SBP and SBP group: 22 patients with cirrhotic ascites and SBP diagnosed by positive ascitic fluid bacterial culture and an increase in polymorphonuclear leukocytes (PMNLs) count in ascites (≥250 cells/mm3). Ascitic fluid calprotectin levels were measured using enzyme-linked immunosorbent assay. Results There was a significant increase of ascitic fluid calprotectin, total leukocytic count, PMNLs, lactate dehydrogenase, and total protein in SBP group when compared to non-SBP group. There were significant positive correlations between white blood cell, ascitic fluid total leukocytic count, PMNLs, total protein, and model for end-stage liver disease score values and ascitic fluid calprotectin among SBP group. Ascitic fluid calprotectin with cutoff value 620 ng/ml, showed a sensitivity of 90.91% and a specificity of 95.45%, in diagnosis of SBP with positive predictive value 95.2% and negative predictive value 91.3%. Conclusion Ascitic fluid calprotectin may be valuable in rapid diagnosis of SBP.

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