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Hepatic encephalopathy is associated with posttransplant cognitive function and brain volume.
Rita Garcia-Martinez1, Alex Rovira, Juli Alonso
1Internal Medicine Hepatology Service, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
Summary
Hepatic encephalopathy (HE) before liver transplantation is linked to poorer cognitive function and reduced brain volume post-transplant. This suggests prior HE negatively impacts neurological outcomes after liver surgery.
Area of Science:
- Neurology
- Hepatology
- Neuroimaging
Background:
- Hepatic encephalopathy (HE) is a frequent complication of cirrhosis, potentially causing brain atrophy and cognitive deficits.
- These neurological issues may persist or impact outcomes following liver transplantation.
Purpose of the Study:
- To investigate the relationship between prior HE, cognitive function, and brain volume in patients undergoing liver transplantation.
- To assess the long-term neurological effects of HE in the context of liver transplantation.
Main Methods:
- A cohort of 52 cirrhosis patients underwent neuropsychological testing pre- and post-liver transplantation (6-12 months).
- Magnetic resonance imaging (MRI) and spectroscopy were used in 24 patients to measure brain volume and neuronal markers (NAA/Cr).
- Pre-transplant assessments identified minimal HE in 28 patients, with data collected on alcohol abuse and diabetes mellitus.
Main Results:
- All cognitive indexes improved post-transplantation, though 13% had persistent mild cognitive impairment.
- Poorer post-transplant cognitive function was associated with pre-transplant alcohol etiology, diabetes mellitus, and HE.
- Patients with prior HE exhibited smaller brain volumes post-transplantation, which correlated with neuronal marker concentration and motor function.
Conclusions:
- Prior hepatic encephalopathy is associated with impaired post-transplantation cognitive function and reduced brain volume.
- These findings highlight the significant impact of HE on neurological recovery after liver transplantation.
- Early detection and management of HE may be crucial for improving long-term neurological outcomes in liver transplant recipients.
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