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Hepatitis C in hemodialysis: the contribution of injection drug use
Bruno Galperim1, Angelo A Mattos, Airton T Stein
1Hospital Mãe de Deus, Porto Alegre, RS, Brazil. galperim@portoweb.com.br
Insights
Hepatitis C virus (HCV) infection is common in hemodialysis patients. Injection drug use is a significant independent risk factor for HCV RNA positivity in this population.
Area of Science:
- Nephrology
- Infectious Diseases
- Epidemiology
Background:
- Hepatitis C virus (HCV) infection is a leading cause of hepatitis in hemodialysis (HD) patients.
- Understanding HCV prevalence and risk factors in this vulnerable group is crucial for public health.
Purpose of the Study:
- To determine the prevalence of positive HCV RNA in patients undergoing chronic renal disease hemodialysis.
- To investigate injection drug use as a potential emerging risk factor for HCV infection.
Main Methods:
- A multicenter, cross-sectional study involving 325 patients on hemodialysis in Porto Alegre, Brazil.
- Data collected via questionnaire, including duration of HD, blood transfusions, and drug use.
- Laboratory tests included ALT, anti-HCV antibodies, and HCV RNA by PCR.
Main Results:
- 68 out of 325 patients tested positive for HCV RNA.
- Significant associations found between HCV RNA positivity and longer HD duration, prior blood transfusion, and injection drug use.
- Logistic regression identified injection drug use (OR: 22.6) as a strong independent risk factor.
Conclusions:
- Injection drug use is a significant independent risk factor for Hepatitis C virus infection in patients with chronic renal disease undergoing hemodialysis.
- Findings highlight the need for targeted screening and prevention strategies in this high-risk population.
Background:
Hepatitis C virus (HCV) infection is the most common cause of acute or chronic hepatitis in patients on hemodialysis (HD). The purpose of this study was to describe the prevalence of positive HCV RNA and investigate injection drug use as an emerging risk factor in patients with chronic renal disease on HD.
Methods:
This was a multicenter cross-sectional study with 325 patients with chronic renal disease on HD in the period between August 1, 2005 to August 30, 2006, receiving care at four institutions in the city of Porto Alegre, Southern Brazil. Epidemiological data were collected by means of a structured questionnaire. The following laboratory tests were performed: alanine aminotransferase (ALT), anti-hepatitis C virus antibodies (anti-HCV), and qualitative polymerase chain reaction (PCR).
Results:
Of 325 patients, 68 had positive HCV RNA results. The comparison between patients with positive and negative PCR results revealed significant differences in duration of HD (mean = 71 versus 52.4 months; p = 0.02); previous blood transfusion (92% versus 72%; p < 0.01); injection drug use (13% versus 0.7%; p < 0.01); anti-HCV positivity at start of HD therapy (60% versus 4%; p < 0.01); and mean ALT value (39 versus 26.5; p < 0.01). Logistic regression analysis showed a positive HCV RNA independently associated to being on HD for more than five years [OR: 2.1 (95% CI 1.2 -3.8)]; previous blood transfusion [OR: 3.7 (95% CI 1.4 - 9.5)]; and injection drug use [OR: 22.6 (95% CI 4.2 - 119.6)].
Conclusion:
Injection drug use was an independent risk factor for HCV infection among chronic renal disease patients on HD.
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