Validity of platelet count/spleen diameter ratio as a predictor of esophageal varices in patients with liver cirrhosis

ABSTRACT

Portal hypertension commonly accompanies the presence of liver cirrhosis, and the development of esophageal varices [OV] is one of the major complications of portal hypertension. To evaluate platelet count/splenic size ratio as a non-invasive parameter to predict the presence or absence of esophageal varices in patients with liver cirrhosis. Eighty-six cirrhotic patients who underwent digestive upper endoscopy, were classified into Group 1 which is formed of 60 patients who had endoscopic evidence of OV and Group 2 which is formed of 26 patients who had no endoscopic evidence of OV. All the patients underwent thorough clinical examination, laboratory and ultrasonographic evaluation. Laboratory investigations were done in the form of complete blood count including platelet count [PLT]; liver function tests [aspartate transaminase [AST], alanine aminotransferase [ALT], serum bilirubin and prothrombin time [PT]], schistosomal antibodies, hepatitis B surface antigen [HBsAg] and hepatitis C virus antibodies. Abdominal ultrasonography and upper gastrointestinal endoscopy were done for all patients. Patients with OV had lower mean platelet count and higher mean spleen diameter than patients without OV [p=0.003 and p=0.01 respectively]. The mean values of the ratio of platelet count/spleen diameter was significantly lower among OV group when compared with patients who had no endoscopic evidence of OV [p=0.002]. There was no significant difference in the platelet count/spleen diameter ratio between different grades of OV. Large OV was associated with increased portal vein diameter [p=0.05]. Lower platelet count/splenic size ratio is associated with the presence of OV yet it cannot be used as a predictor of OV and so the endoscopy remains the standard screening test for OV among patients with liver cirrhosis