title: Helicobacter pylori infection is not associated with subclinical hepatic encephalopathy in stable cirrhotic patients.
abstract: The importance of ammonia-producing Helicobacter pylori infection as a cause of subclinical encephalopathy in cirrhosis was investigated. In addition, a single psychometric test that can reliably detect subclinical hepatic encephalopathy was sought. Out-patients with cirrhosis and no overt encephalopathy underwent [14C]urea breath testing once and psychometric testing on two separate occasions, with an intervening course of clarithromycin/omeprazole if they had subclinical encephalopathy (two of four psychometric tests abnormal). Subclinical encephalopathy was present in 27 of 69 patients (39%), and Helicobacter pylori infection in 14 of 69 (20%). There was no association between the two conditions (P = 0.769). Subclinical encephalopathy resolved in 75% of treated Helicobacter pylori-positive patients and 37.5% of treated Helicobacter pylori-negative patients (P = 0.285). Number connection test-B had high reproducibility among untreated patients (R = 0.655) and high correlation (P < or = 0.01) with three surrogate gold standards. In stable cirrhotic patients, subclinical hepatic encephalopathy was found to: (1) have a high prevalence, (2) not be associated with Helicobacter pylori infection, and (3) be readily detected with the number connection test-B alone.
authors.affiliation: Division of Gastroenterology, Brigham & Women's Hospital, Boston, Massachusetts, USA.
authors.forename: I A
authors.initials: IA
authors.lastname: Scotiniotis
authors.forename: M R
authors.initials: MR
authors.lastname: Lucey
authors.forename: D C
authors.initials: DC
authors.lastname: Metz
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006501:Hepatic Encephalopathy / Q000150:complications / Q000175:diagnosis / Q000382:microbiology*; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011594:Psychometrics