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Prevalence of clinically occult cardiomyopathy in chronic alcoholism
Insights
Subclinical alcoholic cardiomyopathy was identified in alcoholics through increased heart weight, even without obvious heart enlargement. This study highlights the cardiac impact of ethyl alcohol abuse.
Area of Science:
- Cardiology
- Toxicology
- Pathology
Background:
- Alcohol abuse is a significant factor in cardiovascular disease.
- Alcoholic cardiomyopathy (ACM) is a known complication, but its subclinical presentation requires further investigation.
- Autopsy studies provide valuable data on cardiac pathology in specific populations.
Purpose of the Study:
- To investigate the presence of subclinical alcoholic cardiomyopathy in a cohort of alcoholics.
- To compare heart weight and heart-to-body weight ratios between alcoholics and nonalcoholic controls.
- To identify cardiac pathological changes associated with ethyl alcohol abuse.
Main Methods:
- Screened 1,970 autopsy reports to identify 43 alcoholics with ethyl alcohol abuse as the sole etiological factor for heart disease.
- Selected age-matched nonalcoholic controls for comparison.
- Analyzed mean absolute heart weight and mean heart weight to body weight ratio.
- Examined gross and microscopic cardiac pathology.
Main Results:
- The alcoholic group exhibited a statistically significant increase in mean absolute heart weight and heart weight to body weight ratio compared to controls.
- These findings suggest the presence of subclinical alcoholic cardiomyopathy.
- Cardiac pathological changes consistent with ACM were observed in some alcoholics, even in the absence of cardiomegaly.
Conclusions:
- Increased heart weight in alcoholics, even without clinical suspicion of cardiomyopathy, indicates subclinical alcoholic cardiomyopathy.
- Ethyl alcohol abuse can lead to cardiac structural changes detectable at autopsy.
- This study underscores the importance of considering subclinical ACM in individuals with a history of alcohol abuse.
Abstract:
The mean absolute heart weight and mean heart weight to body weight ratio of a group of 43 alcoholics, screened from 1,970 consecutive autopsy reports at the Detroit General Hospital by selecting alcoholics with only ethyl alcohol abuse as an etiology of heart disease, are compared to those of a group of similarity selected age-matched nonalcoholic controls. None of the alcoholics was clinically suspected of having had cardiomyopathy. The statistically significant increased mean absolute heart weight and heart weight to body weight ratio of the alcoholic group reflected the presence of subclinical alcoholic cardiomyopathy. In addition, several of the patients in the alcoholic group displayed gross and microscopic cardiac pathologic changes consistent with alcoholic cardiomyopathy occurring in the absence of cardiomegaly.