Baseline echocardiography
| Parameter | Total | non-iASD | iASD | P value |
| LVEF (%) | 40.9±16.9 | 41.1±16.6 | 40.5±17.9 | 0.9 |
| LVEDd (mm) | 60.2±12.1 | 59.0±13.2 | 62.3±9.9 | 0.41 |
| LVESd (mm) | 46.7±14.7 | 45.19±15.5 | 49.3±13.4 | 0.4 |
| IVSd (mm) | 10.1±1.8 | 10.2±1.8 | 9.9±1.8 | 0.62 |
| PWd (mm) | 10.4±1.6 | 10.4±1.4 | 10.3±1.9 | 0.85 |
| LA diameter (mm) | 55.3±8.2 | 56.1±9.6 | 54.2±5.9 | 0.43 |
| Grade of MR preprocedural | 3.73±0.4 | 3.71±0.5 | 3.75±0.4 | 0.79 |
| Severe MR (IV) pre, N (%) | 35 (72.9) | 20 (71.4) | 15 (75.0) | 0.79 |
| Grade of MR post-procedural | 1.44±0.6 | 1.36±0.6 | 1.55±0.6 | 0.23 |
| Grade of TR | 1.58±0.7 | 1.4±0.7 | 1.9±0.6 | 0.01 |
| Severe TR (grade 3), N (%) | 6 (12.5) | 3 (10.7) | 3 (15.0) | 0.68 |
| sPAP (mm Hg) | 54.2±17.2 | 50.9±15.8 | 58.4±18.3 | 0.14 (0.07) |
| TAPSE (mm) | 19.8±5.2 | 20.3±3.7 | 19.0±6.6 | 0.41 |
Values are mean±SD, or number (%). P values in parentheses refer to one-sided testing. Bold p values indicate statistically significant results.
IVSd, septum diameter; LA, left atrium; LVEDd, left ventricular end-diastolic diameter; LVEF, left ventricular ejection fraction; LVESd, left ventricular end-systolic diameter; MR, mitral regurgitation; PWd, posterior wall diameter; sPAP, systolic pulmonary artery pressure; TAPSE, tricuspid annular plane systolic excursion; TR, tricuspid regurgitation.