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Identifying Nonalcoholic Fatty Liver Disease Advanced Fibrosis in the Veterans Health Administration
Yuval A Patel1, Elizabeth J Gifford2, Lisa M Glass3,4
1Department of Medicine, Duke University Medical Center, Durham Veterans Administration Medical Center, Box 3913, Durham, NC, 27710, USA. Yuval.Patel@duke.edu.
The Fibrosis-4 (FIB-4) calculator is an effective tool for identifying nonalcoholic fatty liver disease (NAFLD) with advanced fibrosis in Veterans Affairs patients. This simple test aids in directing individuals needing further gastrointestinal or hepatology consultation.
Area of Science:
- Hepatology
- Internal Medicine
- Diagnostic Accuracy
Background:
- Nonalcoholic fatty liver disease (NAFLD) is a prevalent cause of chronic liver disease, often linked to metabolic syndrome.
- Advanced fibrosis in NAFLD significantly increases morbidity and mortality.
- Lifestyle interventions, including weight loss, can improve or resolve NAFLD.
Purpose of the Study:
- To evaluate noninvasive fibrosis scoring systems for identifying NAFLD with advanced fibrosis in a Veterans Health Administration (VHA) cohort.
- To assist healthcare providers in managing patients with potential severe NAFLD.
Main Methods:
- Retrospective analysis of a VHA liver biopsy cohort (2005-2015) with biopsy-proven NAFLD or normal liver.
- Exclusion of non-NAFLD liver diseases.
- Evaluation of diagnostic accuracy for NAFLD fibrosis score (NFS), Fibrosis-4 (FIB-4), AST/ALT ratio, APRI, and BARD scores across age groups.
Main Results:
- The study included 329 patients; 92 (28%) had advanced (stage 3-4) fibrosis.
- Nonalcoholic fatty liver disease fibrosis score (NFS) and FIB-4 demonstrated the best prediction of advanced fibrosis across all age groups.
- FIB-4 showed strong diagnostic accuracy (AUROC 0.62-0.80) for advanced fibrosis.
Conclusions:
- Both NFS and FIB-4 scores show good accuracy in diagnosing advanced fibrosis in NAFLD.
- The FIB-4 score is optimal for identifying advanced fibrosis in the VHA population.
- FIB-4 serves as a valuable point-of-care tool to identify patients requiring specialist consultation.
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