三维斑点追踪技术评价阵发性心房颤动患者左心室收缩功能

Assessment of left ventricular systolic function in patients with paroxysmal atrial fibrillation by three-dimensional speckle tracking imaging

目的 探讨三维斑点追踪显像（three-dimensional speckle tracking imaging,3D-STI）评价阵发性心房颤动患者左室收缩功能的价值.方法 34例正常对照者,34例阵发性心房颤动（房颤）患者,应用3D-STI技术获取左室17节段纵向及径向应变值.结果 与对照组相比较,房颤组左室乳头肌水平以下的后壁、下壁及后室间隔应变较对照组减低,差异有统计学意义（P＜0.05）,余节段差异无统计学意义（P＞0.05）.结论 阵发性房颤患者左心室收缩功能减低,但各节段应变减低不尽一致,3D-STI技术可用于评价阵发性房颤患者左心室收缩功能,为临床提供有价值的信息.

Objective To assess the clinical value of three-dimensional speckle tracking imaging （3D-STI） in detecting left ventricular systolic function in patients with paroxysmal atrial fibrillation （PAF）.Methods 34 patients with PAF and 34 matched subjects were included.The strains of the left ventricular 17 segments （longitudinal and radial strain） were acquired using 3D-STI.Results Compared with the controls,the strains were decreased in the posterior wall,the inferior wall and the posterior septum below the left ventricular papillary muscle level in the PAF group,the differences were statistically significant （P 〈 0.05）,while there were no significant differences in other segments （P 〉 0.05）.Conclusions Left ventricular systolic function in patients with PAF was decreased,but the decreased degree of the segments was not all the same.3D-STI can evaluate left ventricular systolic function in patients with PAF and provide valuable clinical information.