[Clinical characteristics and long-term outcome in patients with heart failure complicating acute myocardial infarction]

Area of Science:

• Cardiology
• Internal Medicine
• Clinical Research

Background:

• Acute myocardial infarction (AMI) remains a leading cause of cardiovascular morbidity and mortality.
• The development of heart failure (HF) post-AMI is a significant complication impacting patient outcomes.
• Understanding the clinical characteristics and prognostic implications of HF following AMI is crucial for improving patient management.

Purpose of the Study:

• To investigate the clinical features and prognosis of patients who develop heart failure (HF) after hospitalization for acute myocardial infarction (AMI).
• To identify factors associated with the development and outcomes of HF in the context of AMI.

Main Methods:

• A cohort of 836 patients admitted for AMI within 24 hours of symptom onset was studied between May 1990 and March 2000.
• Heart failure (HF) was diagnosed based on clinical signs (rales, third heart sound) and chest X-ray evidence of pulmonary congestion.
• Prognostic factors for mortality, including clinical characteristics and laboratory values, were analyzed.

Main Results:

• Heart failure (HF) was diagnosed in 31.5% of AMI patients, who were older and had higher rates of diabetes and prior HF.
• Patients with HF experienced increased rates of recurrent angina, pericarditis, and atrial fibrillation.
• In-hospital mortality was significantly higher in the HF group (15.6% vs 2.3%), as was 10-year mortality (90% vs 70%).

Conclusions:

• Acute myocardial infarction (AMI) is frequently complicated by heart failure (HF), leading to increased short- and long-term morbidity and mortality.
• Heart failure (HF), advanced age, hyperglycemia, and leukocytosis at admission are independent predictors of mortality following AMI.
• Early identification and management of these risk factors are essential for improving outcomes in AMI patients.