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Factors discriminating survivors and nonsurvivors in alcoholic heart disease
Insights
Alcoholic cardiomyopathy prognosis is linked to left ventricular filling pressure and hypertrophy. While abstinence is crucial, it doesn't guarantee recovery in severe cases of heart failure.
Area of Science:
- Cardiology
- Toxicology
Background:
- Dilated cardiomyopathy is associated with excessive ethanol intake.
- Alcoholic heart disease (AHD) presents a significant clinical challenge.
Purpose of the Study:
- To identify prognostic indicators in patients with alcoholic cardiomyopathy.
- To evaluate the impact of alcohol abstinence on patient outcomes.
Main Methods:
- Longitudinal monitoring of 18 patients with dilated cardiomyopathy and alcohol abuse history.
- Echocardiography and hemodynamic measurements were performed.
- Histologic analysis of endomyocardial biopsy samples was conducted.
Main Results:
- Nonsurvivors showed significantly lower relative wall thickness (t/r ratio) and higher left ventricular end-diastolic pressure post-treatment compared to survivors.
- Ejection fraction, cardiac output, and ventricular volumes did not significantly differentiate outcomes.
- Alcohol abstinence rates were higher in survivors (67%) than nonsurvivors (33%).
Conclusions:
- Absence of adequate left ventricular hypertrophy and elevated filling pressures predict poor prognosis in alcoholic cardiomyopathy.
- Total alcohol abstinence is essential for managing alcoholic heart disease but may not ensure recovery in advanced stages.
Abstract:
Eighteen patients with dilated cardiomyopathy and a history of excessive ethanol intake were monitored for 3-98 months (mean 23 months). Six patients died (mean age 43.7 +/- 9.2 years) and 12 patients survived (mean age 48.8 +/- 9.5 years). Of the echocardiographic findings taken during heart failure, only the relative wall thickness to the internal dimension of the left ventricle (t/r ratio) differed significantly (survivors 0.33 +/- 0.77 vs. nonsurvivors 0.25 +/- 0.04, P less than 0.05). Of the hemodynamic data obtained after treatment of heart failure, left ventricular end-diastolic pressure differed significantly (survivors 6 +/- 2 vs. nonsurvivors 12 +/- 4 mmHg, P less than 0.001). The two groups could not be differentiated by ejection fraction, cardiac output, end-diastolic or end-systolic volumes, or semi-quantitative analysis of histologic findings obtained by right ventricular endomyocardial biopsy (light microscopy). Only two of six nonsurvivors (33%) succeeded in abstaining from alcohol, while eight of twelve survivors (67%) became teetotalers (P less than 0.05). Total abstinence from alcohol seems to be essential but was not necessarily followed by recovery in the most severe cases. Thus, the absence of adequate hypertrophy and high left ventricular filling pressure may predict the prognosis in alcoholic heart disease.