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[Interconnection between segmentary contractility and dysfunction of left ventricle in patients with post-infarct
Insights
Postinfarction cardiosclerosis impacts cardiac function. Scar location and local contractility index predict systolic and diastolic dysfunction in patients without ischemic cardiomyopathy.
Area of Science:
- Cardiology
- Cardiovascular Physiology
Context:
- Postinfarction cardiosclerosis affects cardiac structure and function.
- Understanding hemodynamic and contractility changes is crucial for patient management.
Purpose:
- To investigate intracardiac hemodynamics and segmental contractility in patients with postinfarction cardiosclerosis.
- To correlate findings with left ventricular dimensions and scar localization.
Summary:
- 227 patients with postinfarction cardiosclerosis were assessed.
- Systolic dysfunction correlated with a local contractility index (LCI) > 1.25.
- Diastolic dysfunction correlated with LCI < 1.25 and posterolateral scar localization.
Impact:
- Identifies specific hemodynamic and contractility patterns associated with left ventricular dysfunction.
- Highlights the prognostic significance of scar location and LCI in postinfarction patients.
- Informs clinical assessment and potential therapeutic strategies for managing postinfarction cardiosclerosis.
Abstract:
Intracardiac hemodynamics and segmental contractility were studied in 227 patients with postinfarction cardiosclerosis without ischemic cardiomyopathy and chronic aneurysm. Decreased ejection fraction (EF < 50%) was noted in 41 (18.1%) patients. Systolic dysfunction was frequently observed in patients with the local contractility index (LCI) exceeding 1.25. The highest degree of the left ventricular end-diastolic diameter (EDD) and end-diastolic volume (EDV) was evidenced by the anteroseptal localization of the postinfarction scar. The diastolic dysfunction of the left ventricle was mostly observed in patients with LCI less than 1.25 and posterolateral localization of scar.