Overview
An old infarct of the myocardium in the apex of the heart refers to a healed area of myocardial necrosis, typically resulting from a previous ischemic insult, leading to potential left ventricular dysfunction and remodeling 1.Diagnosis
Imaging studies (echocardiography, MRI) essential for identifying scar tissue and assessing ventricular function 1.
Electrocardiograms (ECGs) may show signs of old infarction but are often non-specific 1.
Cardiac biomarkers are typically negative in the context of an old infarct 1.Management
Rehabilitation and Lifestyle Modifications: Exercise programs and risk factor modification (e.g., smoking cessation, blood pressure control) are crucial 1.
Medications:
- Beta-blockers to reduce mortality and improve left ventricular function 1.
- ACE inhibitors or ARBs to prevent remodeling and reduce mortality 1.
- Diuretics for managing heart failure symptoms if present 1.
Experimental Therapies: Stem cell therapy, particularly using differentiated skeletal muscle stem cells treated with Retinoic Acid, shows potential for myocardial regeneration and functional improvement, though primarily experimental and in early clinical stages 1.Special Populations
No specific guidance provided for pregnancy, pediatrics, elderly, or comorbidities based on the given abstracts 1.Key Recommendations
Implement comprehensive rehabilitation programs including lifestyle modifications to manage risk factors (Evidence: Expert opinion) 1.
Prescribe beta-blockers and ACE inhibitors/ARBs to improve outcomes and reduce mortality (Evidence: Strong) 1.
Consider experimental stem cell therapies under strict clinical trial conditions for potential regenerative benefits (Evidence: Weak) 1.References
1 Invernici G, Cristini S, Madeddu P, Brock S, Spillmann F, Bernasconi P et al.. Human adult skeletal muscle stem cells differentiate into cardiomyocyte phenotype in vitro. Experimental cell research 2008. link