Evaluation of right ventricular function before and after transcatheter closure in patients with atrial septal defect by tissue motion annular displacement

Objective To evaluate the change of the right ventricular function with tricuspid annular displacement(TAD) measured by tissue motion annular displacement(TMAD) in patients before and after atrial septal defect(ASD) transcatheter closure.Methods Transcatheter closure of ASD with pulmonary hypertension was performed in twenty-five patients.Echocardiography was done before the closure,and three-days,one-month,three- months,six-months after the closure.The inner diameter of right atrium(RA),right ventricular(RV),main pulmonary artery(MPA) and pulmonary arterial systolic pressure(PASP) were measured.The TAD of different period at right ventricular free wall,septum and the mid-point(recorded as T1,T2 and Tm respectively) were measured by TMAD technique.Results The RA,RV,MPA and PASP of the different periods after the operation were decreased gradually compared with that before the closure,and the difference was significant(P 0.05).T1 and Tm of the different periods after closure increased gradually compared with that before closure,and the difference was also significant(P 0.05).Conclusion The transcatheter closure treatment not only improve the geometry structure of the right heart,but also improve the function of the right ventricle in patients with ASD.