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- W2352904230 abstract "Objective To measure the strain and strain rate of free wall of the right ventricle by two dimensional speckle tracking imaging(2D-STI)in patients with uncorrected atrial septal defect(ASD)and to assess right ventricular regional function.Methods Thirty-five patients with ASD(ASD group)and 20healthy adults(control group,no structural and functional changes in heart and sinus rhythm by echocardiography,no administration of any drug)were enrolled in this study.Live images of 5consecutive heart cycles were acquired in apical four-chamber view.Strain and strain rate were analyzed by QLab Software.Maximum strain and strain rate,mean systolic strain and strain rate,and mean diastolic strain and strain rate were calculated.Results Maximum strain,mean systolic strain and mean diastolic strain in the middle and apical segments of right ventricular free wall in the ASD group were significantly higher than those in the control group(all P0.05).Mean diastolic strain in basal lateral wall in the ASD group was significantly lower than that in the control group(P0.05).Maximum strain rate and mean systolic strain rate in the basal,middle and apical segments of right ventricular free wall in the ASD group were significantly higher than those in the control group(all P0.05).Mean diastolic strain rate in the middle and apical segments in the ASD group was significantly higher than that in the control group(both P 0.05).Conclusion Strain and strain rate in adults with uncorrected ASD are significantly different from healthy adults,which indicates that the increase of volume load in the right ventricle affects right ventricular regional function.2D-STI is an effective non-invasive method to assess right ventricular regional function." @default.
- W2352904230 created "2016-06-24" @default.
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- W2352904230 date "2013-01-01" @default.
- W2352904230 modified "2023-09-23" @default.
- W2352904230 title "Assessment of right ventricular function by two dimensional speckle tracking imaging in patients with atrial septal defects" @default.
- W2352904230 hasPublicationYear "2013" @default.
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