Table 2. Follow up of 2D and 3D derived RV: LV ratios after transcatheter ASD II closure .

	Before closure	24 hours after transcatheter closure	1 month after transcatheter closure	6 months after transcatheter closure	P value a	P value b	P value c
2D end-systolic RV: LV ratio (Mean ± SD)	2.7±0.09	2.6±0.03	2.6±0.02	2.1±0.05	NS	NS	<0.01
2D end-diastolic RV: LV ratio (Mean ± SD)	3.1±0.03	3.1±0.04	3±0.05	3±0.04	NS	NS	NS
3D end-systolic RV:LV ratio (Mean±SD)	2.2±0.05	1.9±0.03	1.6±0.03	1.5±0.02	0.04	<0.01	NS
3D end-diastolic RV: LV ratio (Mean±SD)	2.5±0.04	2.4±0.04	2.3±0.03	2.1±0.02	NS	NS	<0.01
Percentage of patients with MVP by 3D echocardiography, %(n)	75 (45)	75 (45)	45 (27)	40 (24)	NS	<0.01	NS

Abbreviations: ASD II: ostium secundum atrial septal defect; LV, left ventricle; MVP, mitral valve prolapse; n (number); RV, right ventricle; 2D, two-dimensional; 3D, three dimensional.

^a P value: Comparison between before closure and 24 hours after closure.

^b P value: Comparison between 24 hours after closure and 1 month after closure.

^c Pvalue: Comparison between 1 m after closure and 6 months after closure.

P Value<0.05 was considered statistically significant.