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The elderly patient in the coronary care unit: III. Factors affecting long-term prognosis
Insights
Older patients with acute myocardial infarction have a 44% five-year survival rate. Congestive heart failure and ventricular premature beats significantly reduce survival in these cardiac patients.
Area of Science:
- Cardiology
- Geriatric Medicine
- Clinical Outcomes Research
Background:
- Acute myocardial infarction (AMI) in elderly patients presents unique challenges.
- Prognostic factors for long-term survival after AMI in this demographic are crucial.
Purpose of the Study:
- To determine the long-term survival rates of patients aged 70 and older admitted with AMI.
- To identify prognostic indicators of mortality in this patient population.
Main Methods:
- Retrospective cohort study of 46 patients aged 70+ admitted with AMI in 1976.
- Follow-up until April 30, 1982, to assess survival.
- Analysis of historical, physical examination, and clinical course variables for prognostic significance.
Main Results:
- Actuarial survival rates were 71% (1 year), 60% (3 years), and 44% (5 years).
- Congestive heart failure and complex ventricular premature beats were significant negative prognostic variables.
- Patients with congestive heart failure had <25% five-year survival; those with complex ventricular premature beats all died within 3 years.
Conclusions:
- Long-term survival after AMI is limited in patients aged 70 and older.
- Congestive heart failure and complex ventricular premature beats are critical indicators for poor prognosis in elderly AMI patients.
Abstract:
Patients aged 70 years and older who were admitted to a coronary care unit in 1976 with documented acute myocardial infarction were followed to April 30, 1982. At that time, of the 46 patients who had survived initial hospitalization, 28 had died, 16 were still living, and two were lost to follow up. The actuarial survival rates were 71 per cent, 60 per cent, and 44 per cent for one, three, and five years, respectively. Only two of the variables available by history, physical examination, and clinical course of the patient in the coronary care unit had prognostic significance--complex ventricular premature beats and congestive heart failure of any degree of severity. Patients who suffered congestive heart failure during their hospitalization had a five-year survival rate of less than 25 per cent, compared with about 60 per cent for those who had neither heart failure nor complex ventricular premature beats. All five patients who had complex ventricular premature beats died within three years.