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[Painless myocardial ischemia in patients with post-infarction cardiosclerosis]
Insights
Silent myocardial ischemia (SMI) is common in postinfarction cardiosclerosis, often linked to angina and heart failure. Longer SMI duration correlates with increased risk and specific cardiac conditions.
Area of Science:
- Cardiology
- Internal Medicine
Context:
- Postinfarction cardiosclerosis presents diagnostic challenges.
- Silent myocardial ischemia (SMI) is a significant concern in these patients.
- Multimodality assessment is crucial for understanding cardiac events.
Purpose:
- To investigate the prevalence and characteristics of silent myocardial ischemia (SMI) in patients with postinfarction cardiosclerosis.
- To explore correlations between SMI duration and clinical factors, echocardiographic findings, and scintigraphic data.
Summary:
- Holter monitoring, echocardiography, and 201Tl myocardial scintigraphy were used in 40 patients.
- SMI was detected in 77.5% of patients, with 27 experiencing concurrent angina.
- SMI duration showed a direct correlation with silent myocardial infarction (r = 0.539; p < 0.05) and was longer in patients with left ventricular failure or myocardial hypertrophy.
Impact:
- Highlights the high prevalence of SMI in postinfarction cardiosclerosis.
- Establishes a link between SMI duration and adverse cardiac conditions like angina and heart failure.
- Suggests that prolonged SMI may indicate a poorer prognosis in this patient group.
Abstract:
Holter monitoring, echocardiography and 201Tl myocardial scintigraphy were performed in 40 patients with postinfarction cardiosclerosis. The monitoring revealed silent myocardial ischemia (SMI), including 27 having SMI with concurrent anginal episodes, 7 with SMI alone. A direct correlation was found between the duration of SMI and silent myocardial infarction (r = 0.539; p less than 0.05). The patients with left ventricular failure and myocardial hypertrophy exhibited longer SMI, as evidenced by echocardiography. 201Tl myocardial scintigraphy revealed no relationship between the degree of SMI and the dimensions of a postinfarction scar. SMI was detected in 77.5% of the patients with postinfarction cardiosclerosis. The duration of SMI was longer with the presence of angina pectoris, left ventricular failure or myocardial hypertrophy.