|
|
|
| The value of 2D speckle tracking imaging in assessing right ventricular function of atrial septal defectaccompanied with pulmonary hypertension after transcather closure |
| CHEN Ji-yun1, YUAN Jian-jun2, ZHU Hao-hui2, WEI Chang-hua2 |
| 1. Department of Ultrasound, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; 2. Department of Ultrasound, Henan Provincial People’s Hospital, Zhengzhou 450003, China |
|
|
|
|
Abstract Objective: To evaluate right ventricular function of patients with atrial septal defect(ASD) and pulmonary hypertension by 2D speckle tracking imaging(STI). Methods: Peak systolic strain(￡), peak systolic strain rate(SRs), early diastolic strain rate(SRe) and late diastolic strain rate(SRa) were measured in basal and mid segment of right ventricular free wall in 30 patients of ASD with pulmonary hypertension before surgery and a week after surgery by STI from the apical 4-chamber view. The chamber size was measured by two-dimensional ultrasound in 31 healthy subjects as controls. Results: It was showed that the ￡, SRs, SRe and SRa in basal and mid segment of right ventricular free wall in the ASD group were significantly lower than those in the control group. In the ASD group, a week after transcatheter closure, RA, RV and PASP decreased, while ￡, SRs, SRe and SRa increased in basal and mid segment of the right ventricular free wall. Conclusions: The right ventricular function of the ASD patients with pulmonary hypertension degraded in different degrees. The right ventricular function is improved significantly after transcatheter closure. Right ventricular function can be accurately and objectively evaluated by STI.
|
|
Received: 21 October 2011
|
|
|
|
|
|
|
|
|
2012, Vol. 23 
