[Structural and functional stage of the myocardium in different forms of ischemic heart disease]

Area of Science:

• Cardiology
• Cardiovascular Medicine
• Clinical Research

Background:

• Ischemic heart disease (IHD) encompasses a spectrum of conditions, including stable angina, unstable angina, and myocardial infarction.
• Understanding the cardiac structural and functional changes associated with different IHD stages is crucial for prognosis and treatment.
• Previous research indicates varying degrees of cardiac remodeling and dysfunction in IHD, but comprehensive analysis across stages is needed.

Purpose of the Study:

• To investigate the prevalence of altered heart geometry and myocardial dysfunction in patients with ischemic heart disease.
• To compare the incidence of systolic and diastolic dysfunction across different clinical presentations of IHD (stable angina, unstable angina, acute myocardial infarction).
• To identify specific patterns of cardiac remodeling and dysfunction associated with the severity of ischemic heart disease.

Main Methods:

• Observational study involving 152 patients aged 46-60 years with diagnosed ischemic heart disease.
• Patients were categorized into three groups: stable angina (n=69), unstable angina (n=32), and acute myocardial infarction (n=53).
• Cardiac geometry and myocardial function (systolic and diastolic) were assessed using echocardiography or similar imaging modalities.

Main Results:

• Normal heart geometry was observed in 33% of stable angina patients; 30% exhibited eccentric hypertrophy.
• Eccentric hypertrophy was more prevalent in patients with unstable angina and myocardial infarction.
• Systolic dysfunction was found in 72% of stable angina, 41% of unstable angina, and 43% of myocardial infarction patients.
• Rigid and restrictive diastolic dysfunction occurred more frequently in patients experiencing myocardial infarction.

Conclusions:

• Patients with ischemic heart disease frequently present with abnormal cardiac geometry, notably eccentric hypertrophy, especially in more advanced stages.
• Systolic dysfunction is a common finding across all studied IHD stages, while diastolic dysfunction, particularly restrictive types, is more pronounced in acute myocardial infarction.
• These findings highlight the progressive nature of cardiac remodeling and functional impairment in ischemic heart disease, emphasizing the need for tailored management strategies.