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Efficacy and safety of Rifaximin for the treatment of liver cirrhosis with covert hepatic encephalopathy

Efficacy and safety of Rifaximin for the treatment of liver cirrhosis with covert hepatic encephalopathy - Covert encephalopathy and Rifaximin

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000044657
Enrollment
40
Registered
2021-07-01
Start date
2021-08-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Liver cirrhosis

Interventions

The study subjects will be orally administered 400 mg of rifaximin three times a day after each meal. The administration period will be 12 weeks.

Sponsors

Wakayama Medical University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Diagnosed as liver cirrhosis (one of the following is recognized) 1) Diagnosed as liver cirrhosis by liver biopsy 2) Imaging findings typical of liver cirrhosis (irregularity of the liver surface, blunting of the margins, presence of uneven, coarse, or regenerated nodules in the liver parenchyma, findings of portal hypertension such as splenomegaly, dilatation of the splenic veins, and collateral blood vessels, and changes in the shape of the liver such as atrophy of the right lobe of the liver, atrophy of the medial zone of the liver, and enlargement of the lateral zone) 3) Typical endoscopic findings (esophagogastric varices, portal hypertensive gastropathy, etc.) 4) Platelet count of 150,000/mm3 or less 5) Vs measured by Virtual Touch Tissue Quantification (VTTQ) is 1.75 m/s or more, or Vs measured by Shear Wave Measurement (SWM) is 1.617 m/s or more. 6) APRI is greater than or equal to 1. 2. Hyperammonemia is present. 3. Without overt hepatic encephalopathy, and being diagnosed as covert hepatic encephalopathy by neuropsychiatric function tests (Number connection test-A, Number connection test-A or Stroop test) 4. Patients aged 40 years or older but less than 80 years at the time of consent. 5. Patient's written consent has been obtained.

Exclusion criteria

Exclusion criteria: 1. Patients who are not in a clear state of consciousness 2. Patients with psychiatric disorders (depression, masked depression, schizophrenia, dementia, etc.) 3. Patients with malignant tumors including hepatocellular carcinoma 4. Patients with any of the following complications 1) Ascites requiring periodic drainage 2) Bleeding due to rupture of esophageal or gastric varices 3) Spontaneous bacterial peritonitis 4) Severe electrolyte abnormalities that may affect neuropsychiatric function 5. Patients with a history of hypersensitivity to rifaximin 6. Patients with the following serious complications 1) Patients with severe renal dysfunction or end-stage renal failure on dialysis 2) Patients with poorly controlled myocardial infarction, heart failure, angina pectoris, arrhythmia, etc. 7. New administration or change in dosage of synthetic disaccharides, carnitine, zinc, or laxatives between 4 weeks before and 12 weeks after administration of rifaximin 8. Pregnant women, lactating women, and patients who may or intend to become pregnant 9. Patients who have difficulty in oral intake 10. Other patients who are deemed by the physician to be inappropriate for the safe conduct of this study

Design outcomes

Primary

MeasureTime frame
The purpose of this study is to evaluate the efficacy of the Number connection test-A in improving liver cirrhosis with covert hepatic encephalopathy. Patients will be evaluated before, 4 weeks after, 8 weeks after, and 12 weeks after rifaximin administration.

Countries

Japan

Contacts

Public ContactShiori Kaji

Wakayama Medical University Department of Gastroenterology

s.kaji@wakayama-med.ac.jp073-441-0627

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026