[Natural history of HCV infection and risk of death in a cohort of patients on long-term hemodialysis].
2006
BACKGROUND: HCV infection represents the major cause of chronic liver disease in hemodialysis and renal transplant patients. The clinical course of liver disease in hemodialysis patients is generally asymptomatic. Only few studies describe the natural history of HCV infection in haemodialysis patients, showing an association between HCV infections and poor survival. METHODS: A prospective cohort study of our haemodialysis population was conducted to define the natural history of HCV infection and its relation to mortality. 77 patients on haemodialysis were enrolled, 24 (31%) of whom were anti-HCV and 53 (69%) anti-HCV-negative. RESULTS: The HCV-RNA was positive in 18 of the 24 anti-HCV-positive subjects (75%). None of the anti-HCV-negative subjects was HCV-RNA-positive. Eight of the 18 HCV-RNA-positive patients (40%) developed cirrhosis with portal hypertension and ascites within 7 years after the first increase of GPT. Seven of these died, nobody developed hepatocarcinoma (HCC). During 58+/-37-follow-up months mortality rate was higher among anti-HCV-positive patients than among anti-HCV-negative. Besides, the 6 deaths occurred only among anti-HCV-positive and HCV-RNA-positive patients. CONCLUSION: in our haemodialysis patient population the presence of antibodies anti-HCV and HCV-RNA is associated with an increased risk of developing liver cirrhosis and of death, in comparison to anti-HCV-negative patients. Our data show that anti-HCV-positive patients have an accelerated course towards chronic hepatopathy and cirrhosis.
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