Related Experiment Videos
Effect of age on long-term prognosis of patients with myocardial infarction
R Castelló1, E Alegría, A Merino
1Cardiovascular Department, University Clinic, Pamplona, Spain.
Insights
Elderly patients with acute myocardial infarction face higher in-hospital mortality and complications like heart failure. However, age alone doesn't determine risk; clinical factors are key for stratifying elderly cardiac patients.
Area of Science:
- Cardiology
- Geriatric Medicine
- Internal Medicine
Background:
- Acute myocardial infarction (AMI) affects both younger and older populations.
- Understanding prognostic factors in elderly AMI patients is crucial for risk stratification and management.
- Previous studies suggest elderly patients may have poorer outcomes, but data on risk factor prevalence and specific complications are varied.
Purpose of the Study:
- To compare the characteristics and outcomes of acute myocardial infarction in patients under and over 65 years old.
- To identify factors influencing in-hospital and late mortality in elderly patients experiencing AMI.
- To determine if age is an independent prognostic factor for survival after AMI.
Main Methods:
- Retrospective study of 181 patients under 65 and 129 patients over 65 with acute myocardial infarction.
- Analysis of coronary risk factors, previous cardiac events, and acute phase complications.
- Comparison of in-hospital mortality, late mortality, and 5-year survival rates between age groups.
Main Results:
- Elderly patients exhibited higher rates of congestive heart failure (51.4% vs 32.6%) and complete heart block (17.1% vs 7.2%) during AMI.
- In-hospital mortality was significantly higher in the elderly group (34% vs 16%).
- Age did not impact survival in Killip class I patients, but significantly reduced life expectancy in elderly patients with Killip class > II.
Conclusions:
- Elderly patients with AMI are not a homogeneous high-risk group; clinical variables identify subsets.
- Age is an independent prognostic factor for late mortality, particularly when heart failure is present.
- Clinical assessment during the acute phase is vital for predicting outcomes in older adults post-myocardial infarction.
Abstract:
We studied 181 patients aged under 65 years and 129 patients over 65 with acute myocardial infarction. There were no major differences in the prevalence of coronary risk factors, angina or previous myocardial infarction. A larger percentage of elderly patients had congestive heart failure (51.4% vs 32.6%, P less than 0.001) and complete heart block (17.1% vs 7.2%, P less than 0.01) during the acute phase. In-hospital mortality was significantly higher in the elderly patients (34% vs 16%, P less than 0.01). Late mortality rates correlated in both groups with the Killip class at the time of infarction and with the occurrence of reinfarction. In the elderly group, it was also associated with complete heart block during the acute phase. Five-year survival was 80% in the older and 72% in the younger patients (P = 0.1). Age did not affect survival of Killip class I patients (85% vs 86%, P = 0.83), but life expectancy was significantly reduced in elderly patients in Killip class greater than II (39% vs 60%, P less than 0.05). In conclusion, elderly patients cannot be considered a homogeneous group of high-risk patients. Clinical variables at the time of infarction can identify low- and high-risk subsets among them. Age constitutes an independent prognostic factor for late mortality when any degree of heart failure is present.