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  • Title: Spectrum of toxic hepatitis following intentional paraquat ingestion: analysis of 187 cases.
    Author: Yang CJ, Lin JL, Lin-Tan DT, Weng CH, Hsu CW, Lee SY, Lee SH, Chang CM, Lin WR, Yen TH.
    Journal: Liver Int; 2012 Oct; 32(9):1400-6. PubMed ID: 22672665.
    Abstract:
    INTRODUCTION: This retrospective observational study examined the clinical features, the degrees of toxic hepatitis, physiological markers and clinical outcomes after intentional paraquat poisoning and sought to determine what association, if any, might exist between these findings. METHODS: A total of 187 patients were referred for management of intentional paraquat ingestion between 2000 and 2010. Patients were categorized into two groups according to their hepatic complication, i.e. with (N = 87) or without (N = 100) toxic hepatitis. Demographic, clinical and laboratory data were obtained for analysis. Mortality rates were also analysed. RESULTS: It was found that patients with toxic hepatitis were younger (39.7 ± 13.7 vs 44.2 ± 16.6 year old, P = 0.046), and suffered from greater incidences of acute respiratory failure (63.2 vs 48.0%, P = 0.037) and acute renal failure (75.9 vs 56.0%, P = 0.004) than patients without hepatitis. The hospitalization period was longer in patients with hepatitis than without hepatitis (16.2 ± 14.6 vs 11.2 ± 12.1 days, P = 0.012), even though there was no difference in mortality rate between both groups (56.3 vs 53.0%, P = 0.649). Notably, the symptoms of toxic hepatitis developed within 6.7 ± 6.3 days of exposure to paraquat with aspartate aminotransferase (AST) 138 ± 156 U/L, alanine aminotransferase (ALT) 127 ± 114 U/L and total bilirubin 2.7 ± 2.6 mg/dL. The hepatitis peaked at 9.5 ± 8.8 days with AST 125 ± 139 U/L, ALT 183 ± 181 U/L and total bilirubin 3.2 ± 3.6 mg/dL. Nevertheless, the symptoms resolved within 17.3 ± 9.8 days of paraquat exposure, and none of the patients died of hepatic complication. CONCLUSIONS: A substantial proportion of paraquat patients suffered from hepatic complication (46.52%), but the spectrum of hepatitis in these patients seemed mild and transient.
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