| objective To evaluate left atrial appendage movement changes of systolic and diastolic, regional function and morphology changes in patients with atrial fibrillation by speckle tracking imaging and real-time three-dimensional transesophageal echocardiography.Methods sixty-seven patients underwent RT-3D TEE was divided into 22 controls,22 paroxysmal atrial fibrillation,21 persistent atrial fibrillation. Left atrial appendage was divided into basal, middle and apical segment. Left atrial appendage emptying fraction of the overall (LAA-EF), basal emptying fraction (B-EF), the middle of emptying fraction (M-EF) and the apical of the emptying fraction (A-EF) was measured by three-dimensional volume measurement. Measure max and min volume of left atrial appendage and every segments, and then calculate ejection fraction of left atrial appendage and every segments and max and min volume fraction of every segments. Each segment systolic strain rate (SRS) and diastolic strain rate (SRD) was measured by STI.Results Paroxysmal atrial fibrillation and persistent atrial fibrillation group LAA-EF, B-EF, M-EF, A-EF were lower than the control group and persistent atrial fibrillation group was the lowest in the three groups. Base, middle and top ejection fraction of left atrial appendage was no significant difference in three groups (P all> 0.05). There was no significant difference in volume fraction of left atrial appendage base, middle and top among the three groups. Compared with the control group, SRs and SRD of left atrial appendage basal, middle, apical segment was lower in paroxysmal atrial fibrillation group and persistent atrial fibrillation group, and persistent atrial fibrillation group decreased more significantly. Conclusions Paroxysmal atrial fibrillation and persistent atrial fibrillation can lead to left atrial appendage global or local systolic and diastolic function to reduce, and persistent atrial fibrillation decreased more significantly. Paroxysmal atrial fibrillation and persistent atrial fibrillation group did not change the basic form of the left atrial appendage, and the volume and systolic function was diffuse changes. There is no change in the local form and function. |
