Utility of 3D Echocardiography for Device Sizing During Transcatheter ASD Closure: A Comparative Study

Area of Science:

• Cardiology
• Medical Imaging
• Echocardiography

Background:

• Two-dimensional transesophageal echocardiography (2D TEE) is standard for assessing patients undergoing transcatheter atrial septal defect (ASD) device closure.
• Three-dimensional transesophageal echocardiography (3D TEE) offers high-resolution en-face ASD imaging but is underutilized.
• Comparative analysis of 3D and 2D TEE for ASD device planning is needed.

Purpose of the Study:

• To compare the effectiveness of 3D TEE and 2D TEE in assessing atrial septal defects (ASDs) for device closure planning.
• To evaluate the correlation between 3D TEE measurements and actual device size used in transcatheter ASD closure.
• To develop a predictive equation for device size using 3D TEE parameters.

Main Methods:

• Prospective, observational study over one year.
• Patients undergoing transcatheter ASD device closure had baseline 2D and 3D TEE assessments.
• Defect characteristics were compared between modalities; regression analysis was used to predict device size.

Main Results:

• Thirty patients (83% female, mean age 40.5 years) were included.
• Good agreement was found between 2D and 3D TEE for ASD diameters.
• 3D TEE defect area and circumference strongly correlated with final device size, enabling a predictive equation.

Conclusions:

• Device sizing using 3D TEE parameters alone is as effective as 2D TEE for transcatheter ASD closure.
• 3D TEE provides valuable data for accurate device selection in ASD interventions.
• This study supports the increased adoption of 3D TEE in ASD device planning.