Risk factors in alcoholic cardiomyopathy

Area of Science:

• Cardiology
• Internal Medicine
• Public Health

Background:

• Alcoholic cardiomyopathy is a known complication of heavy alcohol consumption.
• Previous studies suggested a link between alcohol abstinence and improved left ventricular (LV) function.
• Long-term data on survival benefits of abstinence in alcoholic cardiomyopathy are lacking.

Purpose of the Study:

• To investigate the effect of alcohol abstinence on survival in patients with alcoholic cardiomyopathy.
• To compare risk factors and survival outcomes between alcoholic and nonalcoholic dilated cardiomyopathy.
• To identify prognostic factors for survival in both patient groups.

Main Methods:

• A cohort study comparing 105 male patients with alcoholic cardiomyopathy and 64 male controls with nonalcoholic dilated cardiomyopathy.
• Survival data analyzed using Cox proportional hazards model.
• Echocardiographic variables and clinical factors assessed for association with survival.

Main Results:

• Overall mortality was similar between alcoholic (42.85%) and nonalcoholic (41%) cardiomyopathy groups at mean follow-up of 17.2 months.
• In alcoholic cardiomyopathy, increased LV end-diastolic dimension (LVDD) and incomplete mitral leaflet closure (IMLC) were associated with nonsurvival.
• Drinking pattern was not significantly associated with survival in alcoholics; LVDD, low cardiac output, age, and abnormal wall motion were key in nonalcoholics.

Conclusions:

• Risk factors for alcoholic and nonalcoholic cardiomyopathy share similarities.
• Incomplete mitral leaflet closure (IMLC) may be a specific prognostic indicator for alcoholic cardiomyopathy.
• Abstinence from alcohol does not appear to confer a survival advantage in patients with alcoholic cardiomyopathy.