Psychometric tests for diagnosing minimal hepatic encephalopathy.

Area of Science:

• Hepatology
• Neuropsychology
• Clinical Diagnostics

Background:

• Minimal hepatic encephalopathy (mHE) significantly affects daily living, necessitating diagnosis and treatment.
• Current diagnostic approaches for mHE lack consensus on optimal methods.
• Established psychometric tests include the Inhibitory Control Test, Psychometric Hepatic Encephalopathy Score (PHES), and Critical Flicker Frequency.

Purpose of the Study:

• To review current diagnostic tools for minimal hepatic encephalopathy (mHE).
• To highlight the lack of consensus on the most appropriate diagnostic methods for mHE.
• To identify critical data gaps hindering optimal mHE diagnosis.

Main Methods:

• Review of frequently used psychometric and neurophysiological tests for mHE diagnosis.
• Consideration of recommendations from the International Society for Hepatic Encephalopathy and Nitrogen Metabolism.
• Identification of limitations in current diagnostic data.

Main Results:

• Multiple diagnostic tools are used for mHE, including PHES, Inhibitory Control Test, and Critical Flicker Frequency.
• PHES and Repeatable Battery for the Assessment of Neuropsychological Status are recommended by a leading society.
• The Continuous Reaction Time Test is regaining interest, but data is limited.
• Crucial information on test result variability (age, sex, education, comorbidities) is missing for most methods.

Conclusions:

• There is no consensus on the optimal diagnostic tools for minimal hepatic encephalopathy (mHE).
• Significant data gaps exist regarding factors influencing test performance and reliability.
• Future research must address these deficiencies to improve mHE diagnosis and patient management.