The prevalence and risk factors associated with esophageal varices in subjects with hepatitis C and advanced fibrosis
Background
The factors predictive of the presence or the absence of esophageal varices in hepatitis C virus (HCV) and advanced fibrosis have not been defined.
Objectives
To define the prevalence of esophageal varices and the factors that are positively and negatively with such varices in hepatitis C and advanced fibrosis.
Design
A prospective study of esophageal varices and associated risk factors in subjects with hepatitis C and advanced fibrosis.
Setting
Prerandomization data from the HALT-C (hepatitis C long-term antiviral treatment against cirrhosis) clinical trial.
Patients and Intervention
Subjects with bridging fibrosis or cirrhosis, who were virologic nonresponders to treatment with pegylated interferon alpha 2a and ribavirin, underwent endoscopy.
Results
Sixteen percent of subjects with bridging fibrosis (95/598) and 39% of subjects with cirrhosis (164/418) had varices (P < .0001); 2% of subjects with bridging fibrosis (13/598) and 11% of those with cirrhosis (48/418) had medium or large varices. Subjects with bridging fibrosis and varices had a significantly lower platelet count and higher bilirubin and international normalized ratio (INR) compared with those without varices, suggesting that the biopsy may have underestimated the severity of fibrosis. A platelet count >150,000/mm3 was associated with a negative predictive value of 99% for esophageal varices. By logistic regression modeling, African American race and female sex were protective, whereas a lower platelet count and higher bilirubin and INR predicted varices (c statistic, 0.758).
Conclusions
The risk of having varices increases with decreasing platelet counts, increasing bilirubin, and INR. The probability of having medium or large varices at platelet counts >150,000/mm3 is negligible in this population.
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See CME section; p. 967.This is publication number 10 from the HALT-C Trial Group. This is original work and is not being considered for publication elsewhere.Presented in part at the annual meeting of the American Association for Study of Liver Diseases, October 24-28, 2003, Boston, Massachusetts.
PII: S0016-5107(06)00617-1
doi:10.1016/j.gie.2006.03.007
© 2006 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.
