Related Experiment Videos
Alcohol abuse exaggerates autonomic dysfunction in chronic liver disease
S Lindgren1, B Lilja, H Verbaan
1Gastroenterology-Hepatology Division, University of Lund, University Hospital of Malmö, Sweden.
Scandinavian Journal of Gastroenterology
|November 1, 1996
Summary
Autonomic nerve dysfunction, particularly vagal nerve impairment, is common in liver disease patients and worsened by alcohol. This neuropathy may explain altered vascular responses in chronic liver conditions.
Area of Science:
- Cardiology
- Gastroenterology
- Neurology
Background:
- Advanced chronic liver disease presents with peripheral vasodilation and elevated catecholamines.
- These hemodynamic changes suggest impaired vascular responsiveness linked to autonomic nerve dysfunction.
Purpose of the Study:
- To evaluate age-related autonomic nerve function in patients with chronic liver disease using non-invasive cardiovascular reflex tests.
- To compare autonomic function between alcoholic and non-alcoholic liver disease patients and healthy controls.
Main Methods:
- Utilized three non-invasive tests: expiratory/inspiratory (E/I) ratio, and tilt table acceleration and brake indices.
- Assessed liver function via demethylating capacity.
- Compared results from 27 liver disease patients against 56 healthy controls.
Main Results:
- Autonomic neuropathy detected in 52% of patients (77% alcoholic vs. 14% non-alcoholic liver disease).
- Significantly decreased E/I ratio (vagal dysfunction) observed in both alcoholic and non-alcoholic liver disease patients compared to controls.
- Alcoholic liver disease patients showed more pronounced E/I ratio decrease and additional sympathetic neuropathy (inability to raise diastolic blood pressure post-tilt).
Conclusions:
- Autonomic, primarily vagal, nerve dysfunction is prevalent in liver disease and exacerbated by alcohol.
- Autonomic neuropathy is a potential contributor to the altered vascular responsiveness seen in chronic liver disease.