Noninvasive diagnosis of esophageal varices using platelet count/spleen diameter ratio <b>[Abstract in English]</b>

Abstract

Aims: To apply a noninvasive, low expensive method (platelet count/spleen diameter ratio – P/S) for the diagnosis of esophageal varices in patients with chronic hepatic disease, verifying the accuracy of this method when compared with previous studies. Methods: A retrospective, cross-sectional study was performed at Hospital São Lucas from PUCRS. Forty patients that had gastroenterological consultation during five months (from December/2007 to April/2008) were selected. Cirrhotic patients who had undergone endoscopic procedures for varices, surgery for portal hypertension, or β-blocker users were excluded. Information was collected by medical charts review. Results: Twenty subjects were males (67.5%) and the median age was 58 years old. Main causes of cirrhosis was alcohol and hepatitis C. The majority of the patients had platelets count below the normal and high splenic diameter, compatible with low P/S ratio. Accuracy was 62.5%, with sensitivity of 59.4% and specificity of 75%. Accuracy was lower than the results from previous studies. Conclusions: P/S ratio was easy to perform and to calculate, not increasing cost to patient management. Therefore, this method may be considered in the clinical approach as a noninvasive method for the diagnosis of esophageal varices. However, endoscopy is so far the method of choice for the diagnosis of esophageal varices in patients with cirrhosis.