Overview
Background: Three-dimensional echocardiographic image for atrial septal defect (ASD) is useful for evaluation of defect size and shape. The investigators suggested optimal device size using three-dimensional transesophageal echocardiographic image and our formula in previous study.
Purpose: In this study, the investigators seek to predict the correct device size and confirm the accuracy of the formula that we made before device closure in ASD patients.
Eligibility
Inclusion Criteria:
- Age ≥18 year-old
- Susceptible indication for atrial septal defect closure
- Potential candidate for device closure
Exclusion Criteria:
- Poor candidate for device closure: multiple ASDs, ect
- Other heart disease requiring open heart surgery


