Transient Elastography vs. Aspartate Aminotransferase to Platelet Ratio Index in Hepatitis C: A Meta-Analysis

Background and rationale: Many different non-invasive methods have been studied with the purpose of staging liver fibrosis. The objective of this study was verifying if transient elastography is superior to aspartate aminotransferase to platelet ratio index for staging fibrosis in patients with chronic hepatitis C. Material and methods: A systematic review with meta-analysis of studies which evaluated both non-invasive tests and used biopsy as the reference standard was performed. A random-effects model was used, anticipating heterogeneity among studies. Diagnostic odds ratio was the main effect measure, and summary receiver operating characteristic curves were created. A sensitivity analysis was planned, in which the meta-analysis would be repeated excluding each study at a time. Results: Eight studies were included in the meta-analysis. Regarding the prediction of significant fibrosis, transient elastography and aspartate aminotransferase to platelet ratio index had diagnostic odds ratios of 11.70 (95% confidence interval = 7.13-19.21) and 8.56 (95% confidence interval = 4.90-14.94) respectively. Concerning the prediction of cirrhosis, transient elastogra-phy and aspartate aminotransferase to platelet ratio index had diagnostic odds ratios of 66.49 (95% confidence interval = 23.71-186.48) and 7.47 (95% confidence interval = 4.88-11.43) respectively. Conclusion: In conclusion, there was no evidence of significant superiority of transient elastography over aspartate aminotransferase to platelet ratio index regarding the prediction of significant fibrosis, but the former proved to be better than the latter concerning prediction of cirrhosis

Treatment of HCV infection in patients with cirrhosis

The treatment of patients with cirrhosis has the following purposes: to prevent the complications of the disease; to allow for the regression of cirrhosis; and to prevent reinfection in the graft in patients undergoing liver transplantation. When the sustained viral response is evaluated in patients with cirrhosis, especially in those with decompensated disease, it is noted to be lower than that of patients with chronic hepatitis, and with a higher possibility of complications of the treatment. Based on a review of the literature, we conclude that we should treat patients with compensated cirrhosis, probably also those with portal hypertension, and patients with decompensated cirrhosis only when included on the transplant list, as long as Child B with HCV genotype 2 (possibly 3) and preferably after clinical compensation

PLATELET COUNT SQUARED/SPLEEN DIAMETER-ASPARTATE AMINOTRANSFERASE RATIO: NON-INVASIVE METHOD TO PREDICT ESOPHAGEAL VARICES

ABSTRACT BACKGROUND - Variceal bleeding has a high mortality among cirrhotics, and screening with endoscopy is indicated at the diagnosis of cirrhosis. Screening with endoscopy implies discomfort, risks and considerable costs. OBJECTIVE - To evaluate platelet count squared/spleen diameter-aspartate aminotransferase ratio (PS/SA), as a non-invasive predictor of esophageal varices in cirrhotics. METHODS - This cross-sectional study evaluated cirrhotics for PS/SA and presence of esophageal varices. Outpatient records of cirrhotic patients were reviewed for the abovementioned data. Sensitivity, specificity, negative and positive predictive values of PS/SA were calculated. After the univariate analysis, variables with P<0.10 were submitted to a logistic regression. RESULTS - The study included 164 cirrhotics, 59.70% male, with a mean age of 56.7 years. Hepatitis C was the most frequent cause of cirrhosis, being present in 90 patients. Patients were classified as Child-Pugh A in 52.44% and as Child-Pugh B or C in 47.56%. Esophageal varices were present in 72.56% of the patients at endoscopy. PS/SA, with a cutoff of 3x108, had a sensitivity of 95.80% (confidence interval of 95% - 95%CI=0.92-0.99), a specificity of 22.70% (95%CI=0.10-0.35), a positive predictive value of 77.20% (95%CI=0.70-0.84) and a negative predictive value of 66.70% (95%CI=0.42-0.91). In the logistic regression, only platelet count and Child-Pugh score were associated to esophageal varices (P<0.05). CONCLUSION - PS/SA has an excellent sensitivity to predict esophageal varices, allowing almost one fourth of patients without esophageal varices to spare endoscopy. Nevertheless, PS/SA is not independently associated to esophageal varices

Hepatorenal syndrome: Current concepts related to diagnosis and management

Renal failure in cirrhotic patients is a very severe condition. Hepatorenal syndrome has the worst prognosis among all causes of kidney failure in such patients. Hepatorenal syndrome is diagnosed especially in cirrhotic patients with ascites who develop loss renal function, despite diuretic suspension and volume expansion with albumin and for whom other causes of kidney injury have been excluded. Patients with hepatorenal syndrome should be treated with a vasoconstrictor in combination with albumin as a bridge to receiving a liver transplant. The vasoconstrictor of choice is terlipressin or noradrenaline. In spite of higher drug-related costs associated to terlipressin, initial evidence demonstrates that, considering all direct medical costs involved, the treatment strategy using terlipressin is probably more economical than that using noradrenaline