Prediction of Hepatic Fibrosis in Patients With Chronic Hepatitis C by Biochemical and Duplex Doppler Indices
NCT ID: NCT00466336
Last Updated: 2008-03-06
Study Results
Results pending
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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Recruitment Status
COMPLETED
Total Enrollment
503 participants
Study Classification
OBSERVATIONAL
Study Start Date
2003-01-31
Study Completion Date
2007-01-31
Brief Summary
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The purpose of our prospective study was to evaluate the value of Doppler parameters and compare the diagnostic accuracy of Doppler parameters with various biochemical indices in predicting significant hepatic fibrosis (≥ F2) and cirrhosis (F4) in chronic hepatitis C (CHC) patients.
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Detailed Description
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Chronic hepatitis C virus (HCV) infection is a global health problem, affecting about 3% of the world's population. Compared to patients with mild hepatic fibrosis, those with significant fibrosis are at risk of developing cirrhosis over a 10- to 20-year period. This fact suggests the need of early antiviral therapy in chronic hepatitis C (CHC) patients to prevent the development of cirrhosis and associated complications. For patients having cirrhosis, surveillance endoscopy and ultrasound for gastroesophageal varices and hepatocellular carcinoma are needed to minimize morbidity and mortality ). Furthermore, reduced treatment response and tolerability to antiviral therapy may be encountered in cirrhotic patients. An accurate assessment of hepatic fibrosis stage is therefore important for both diagnostic and therapeutic purposes.
Liver biopsy has been recognized as the gold standard for assessing the grade of necroinflammation and stage of fibrosis. However, it is costly, and harbors risk of complications, including 20% of patient discomfort, 0.1-3% of significant morbidity, and 0.02-0.24% of mortality. In addition, sampling error due to the non-uniform distribution of the parenchymal damage, as well as intra- and inter-observer variability is often encountered. A noninvasive tool to evaluate liver disease activity or fibrosis stage would be helpful, particularly in monitoring CHC patients over time.
Noninvasive methods to evaluate the hepatic histology in HCV-infected patients include symptoms and signs, routine laboratory tests, serum markers of fibrosis and inflammation, quantitative tests of liver function, and radiological imaging. Previous studies have assessed the usefulness of noninvasive tests in predicting hepatic fibrosis. However, none of them showed satisfactory results, either due to lack of accuracy, accessibility, reproducibility or being expensive.
Duplex Doppler ultrasonography (DDU), which is readily available and non-invasive, has been used for the assessment of splanchnic vascular hemodynamics in patients with chronic liver disease. Portal vein velocity (PVV) has been shown to be correlated with significant fibrosis or cirrhosis. Hepatic artery resistive index (HARI) and pulsatility index (HAPI) are associated with portal vein resistance and hepatic vein-portal vein pressure gradient (HPVG). Splenic artery resistive index (SARI) and pulsatility index (SAPI) are associated with portal vein resistance, cirrhosis and grade of esophageal varices (EV). Previous studies to evaluate the value of DDU in predicting liver histology are controversial, probably due to small patient number, diverse grading of liver histology, and large missing data.
Thus, the purpose of our prospective study was to evaluate the value of Doppler parameters and compare the diagnostic accuracy of Doppler parameters with various biochemical indices in predicting significant hepatic fibrosis (≥ F2) and cirrhosis (F4) in chronic hepatitis C (CHC) patients.
Liver biopsy has been recognized as the gold standard for assessing the grade of necroinflammation and stage of fibrosis. However, it is costly, and harbors risk of complications, including 20% of patient discomfort, 0.1-3% of significant morbidity, and 0.02-0.24% of mortality. In addition, sampling error due to the non-uniform distribution of the parenchymal damage, as well as intra- and inter-observer variability is often encountered. A noninvasive tool to evaluate liver disease activity or fibrosis stage would be helpful, particularly in monitoring CHC patients over time.
Noninvasive methods to evaluate the hepatic histology in HCV-infected patients include symptoms and signs, routine laboratory tests, serum markers of fibrosis and inflammation, quantitative tests of liver function, and radiological imaging. Previous studies have assessed the usefulness of noninvasive tests in predicting hepatic fibrosis. However, none of them showed satisfactory results, either due to lack of accuracy, accessibility, reproducibility or being expensive.
Duplex Doppler ultrasonography (DDU), which is readily available and non-invasive, has been used for the assessment of splanchnic vascular hemodynamics in patients with chronic liver disease. Portal vein velocity (PVV) has been shown to be correlated with significant fibrosis or cirrhosis. Hepatic artery resistive index (HARI) and pulsatility index (HAPI) are associated with portal vein resistance and hepatic vein-portal vein pressure gradient (HPVG). Splenic artery resistive index (SARI) and pulsatility index (SAPI) are associated with portal vein resistance, cirrhosis and grade of esophageal varices (EV). Previous studies to evaluate the value of DDU in predicting liver histology are controversial, probably due to small patient number, diverse grading of liver histology, and large missing data.
Thus, the purpose of our prospective study was to evaluate the value of Doppler parameters and compare the diagnostic accuracy of Doppler parameters with various biochemical indices in predicting significant hepatic fibrosis (≥ F2) and cirrhosis (F4) in chronic hepatitis C (CHC) patients.
Conditions
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Chronic Hepatitis C
Hepatic Fibrosis
Cirrhosis
Study Design
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Observational Model Type
CASE_ONLY
Study Time Perspective
CROSS_SECTIONAL
Eligibility Criteria
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Inclusion Criteria
* Age older than 18 years
* Positive anti-HCV and HCV RNA for more than 6 months
* Alanine aminotransferase level more than twice the upper limit of normal (ULN)
* Positive anti-HCV and HCV RNA for more than 6 months
* Alanine aminotransferase level more than twice the upper limit of normal (ULN)
Exclusion Criteria
* HBV and HCV co-infection
* HIV and HCV co-infection
* Heavy alcohol use (\> 50 gram/day)
* Autoimmune liver diseases
* Metabolic liver diseases
* Presence of hepatocellular carcinoma
* HIV and HCV co-infection
* Heavy alcohol use (\> 50 gram/day)
* Autoimmune liver diseases
* Metabolic liver diseases
* Presence of hepatocellular carcinoma
Minimum Eligible Age
18 Years
Eligible Sex
ALL
Accepts Healthy Volunteers
No
Sponsors
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National Taiwan University Hospital
OTHER
Sponsor Role
lead
Responsible Party
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National Taiwan University Hospital
Principal Investigators
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Chen-Hua Liu, MD
Role: STUDY_DIRECTOR
Department of Internal Medicine, National Taiwan Universitys Hospital
Locations
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National Taiwan University Hospital
Taipei, , Taiwan
Site Status
Countries
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Taiwan
References
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BACKGROUND
Other Identifiers
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200612012R
Identifier Type: -
Identifier Source: org_study_id
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