Cardiac remodeling after atrial septal defects device closure

Area of Science:

• Cardiology
• Medical Devices
• Echocardiography

Background:

• Trans-catheter device closure is the preferred treatment for secundum atrial septal defects (ASDs).
• Device closure influences cardiac hemodynamics and function.
• Understanding cardiac remodeling post-closure is crucial.

Purpose of the Study:

• To investigate cardiac remodeling after successful trans-catheter ASD device closure.
• To assess changes using advanced echocardiographic parameters.

Main Methods:

• Prospective cohort study of 45 patients undergoing ASD device closure.
• Evaluation of volumetric, functional, Doppler, strain, and strain rate data for atria and ventricles.
• Comparison of pre-procedural and 48-hour post-procedure data.

Main Results:

• Significant changes observed in left ventricular end-diastolic volume index, right ventricular diameter, left atrial volume index, and right atrial volume index.
• Significant reduction in right and left atrial strains and right ventricular free wall strain post-closure.
• Left atrial and right atrial E/e' ratios significantly decreased post-procedure.

Conclusions:

• ASD patients exhibit impaired global strains compared to normal ranges.
• Atrial and right ventricular strains significantly reduce after device closure.
• Decline in left atrial function is more pronounced in larger ASDs, highlighting clinical relevance.