CAJ | 학술논문

目的通过研究封堵器介入治疗房间隔缺损术后患者心房应变,对比斑点追踪显像及组织多普勒应变显像两种方法对心房功能评价的价值.方法对封堵器介入治疗房间隔缺损成功的40例患者于术后1周内进行超声心动图检查,应用组织多普勒应变显像及斑点追踪显像技术分别测量左心房封堵器处及左心房侧壁应变,对比两种方法评价心房功能的可靠性.结果两种测量方法的可重复性及后处理分析时间差异无统计学意义.两种方法均显示左心房侧壁应变显著高于封堵器局部应变(组织多普勒:47.31%±27.25% vs 30.06%±14.29%, P<0.01;斑点追踪:43.49%±25.55% vs 12.74%±9.16%, P<0.001).两种方法评价侧壁应变无差异,但斑点追踪封堵器局部应变低于组织多普勒显像,且有5例患者封堵器局部应变为0,而组织多普勒法未见封堵器局部应变为0(χ~2=5.33, P=0.027).结论斑点追踪显像评价心房形变能力优于组织多普勒应变显像.
목적 통과연구봉도기개입치료방간격결손술후환자심방응변,대비반점추종현상급조직다보륵응변현상량충방법대심방공능평개적개치.방법 대봉도기개입치료방간격결손성공적40례환자우술후1주내진행초성심동도검사,응용조직다보륵응변현상급반점추종현상기술분별측량좌심방봉도기처급좌심방측벽응변,대비량충방법평개심방공능적가고성.결과 량충측량방법적가중복성급후처리분석시간차이무통계학의의.량충방법균현시좌심방측벽응변현저고우봉도기국부응변(조직다보륵:47.31%±27.25% vs 30.06%±14.29%, P<0.01;반점추종:43.49%±25.55% vs 12.74%±9.16%, P<0.001).량충방법평개측벽응변무차이,단반점추종봉도기국부응변저우조직다보륵현상,차유5례환자봉도기국부응변위0,이조직다보륵법미견봉도기국부응변위0(χ~2=5.33, P=0.027).결론 반점추종현상평개심방형변능력우우조직다보륵응변현상.
Objective To compare the value of speckle-tracking imaging and tissue Doppler strain imaging in evaluating left atrial (LA) mechanical contraction. Methods Forty patients after successful percutaneous atrial septal defect (ASD) closure were enrolled in this study. Two-dimensional strain imaging (2D strain echocardiography, 2DSE) and tissue Doppler imaging (TDI) were performed one weak after ASD closure. Off-line analysis was done for atrial longitudinal peak systolic strain on the interatrial septum, in correspondence of the device, and on the lateral wall of the left atrium from apical 4 chamber view with 2DSE and color-coded strain imaging, respectively. Results There was no statistical difference of the inter- and intra-observer viability as well as time consumption on the off-line analysis between 2DSE and TDI. LA lateral wall strain was much higher than that of LA septum assessed by both color-coded strain imaging (47.31%±27.25% vs 30.06%±14.29%, P<0.01) and 2DSE (43.49%±25.55% vs 12.74%±9.16%, P<0.001). LA lateral wall strain was similar with either method (P=NS). However, at the site of ASD occluder, a non-contractile element, deformation was significantly higher in color-coded strain imaging than 2DSE (P<0.001). Five patients (12.50%) presented absence of deformation on ASD occluder with 2DSE, whereas there was no patient with TDI assessment (χ~2=5.33, P=0.027). Conclusion Speckle-tracking imaging is superior to tissue Doppler strain imaging in assessing left atrium mechanical function.