Mortality in alcoholics with autonomic neuropathy

Area of Science:

• Cardiology
• Neurology
• Toxicology

Background:

• Chronic alcohol consumption is a leading cause of neuropathy.
• Autonomic neuropathy, specifically vagal neuropathy, is a known complication of alcoholism.
• The impact of vagal neuropathy severity on long-term survival in chronic alcoholics requires further investigation.

Purpose of the Study:

• To investigate the association between the severity of vagal neuropathy and long-term mortality in male chronic alcoholics.
• To determine if autonomic dysfunction in alcoholics is linked to increased cardiovascular disease mortality.

Main Methods:

• Prospective follow-up study of 79 male chronic alcoholics.
• Assessment of autonomic neuropathy using four tests of vagus nerve function.
• Survival analysis over a mean follow-up period of 5.5 years (up to 7 years).

Main Results:

• Twelve patients died during the follow-up period.
• Survival rates at 7 years were 91% for those with no vagal neuropathy, 66% for one abnormal test, and 79% for two or more abnormal tests.
• Mortality was significantly higher in patients with evidence of vagal neuropathy compared to the general population, with cardiovascular disease being a major cause of death.

Conclusions:

• Evidence of vagal neuropathy in chronic alcoholics is associated with significantly increased long-term mortality.
• Cardiovascular disease appears to be a primary contributor to the excess mortality observed in this cohort.
• Autonomic dysfunction should be considered a critical factor influencing prognosis in chronic alcoholics.