Angina pectoris and myocardial infarction

Area of Science:

• Cardiology
• Clinical Medicine
• Epidemiology

Background:

• Angina pectoris is a significant symptom in patients experiencing myocardial infarction (MI).
• Understanding the prevalence and impact of angina before and after MI is crucial for patient outcomes.

Purpose of the Study:

• To investigate the prevalence of angina pectoris in male patients following their first myocardial infarction.
• To assess the persistence of angina symptoms after MI and its correlation with clinical course and mortality.

Main Methods:

• A cohort of 504 male patients who survived their first myocardial infarction was studied.
• Prevalence of questionnaire angina and effort-induced chest pain was assessed before and after MI (3 months and 1 year).
• Correlation with age and association with clinical course and death rate were analyzed.

Main Results:

• 28% of patients reported angina before MI; 40% had effort-induced chest pain alone.
• 72% of patients with pre-MI effort-induced chest pain continued to experience symptoms post-MI.
• Prevalence of effort-induced chest pain was 55% at 3 months and 45% at 1 year post-MI.
• Patients with pre-MI chest pain had a more severe clinical course and a significantly higher death rate (15% vs. 6%).

Conclusions:

• Angina pectoris is a prevalent symptom in male patients before and after their first myocardial infarction.
• Persistent chest pain post-MI is associated with a more severe clinical course and increased mortality.
• Early identification and management of angina in MI patients may improve prognosis.