Hepatic encephalopathy is a complex neuropsychiatric syndromethat may occur in such diverse clinical situations as inheritederrors of the urea cycle, acute or chronic liver disease, andspontaneous or iatrogenic portosystemic venous shunting, includingthat following procedures to establish a transjugular intrahepaticportosystemic shunt. The clinical manifestations of this syndromerange from subtle abnormalities detectable only by psychometrictesting to deep coma. Several grading systems have been proposed;one based on clinical and electroencephalographic abnormalitiesis shown in Table 1.1 Hepatic encephalopathy may be presentin 50 to 70 percent of all patients with cirrhosis, includingthose with . . . [Full Text of this Article]
Approach to Management
Reduction of Production and Absorption of Ammonia
Increased Metabolism of Ammonia in the Tissues
Reduction of False Neurotransmitters
Inhibition of -Aminobutyric AcidBenzodiazepine Receptors
Correction of Manganese Deposition in the Basal Ganglia
Orthotopic Liver Transplantation
Source Information
From the Institute of Hepatology, University College London Medical School, 6975 Chenies Mews, London WC1E 6HX, United Kingdom, where reprint requests should be addressed to Dr. Williams.
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