| 强剑颖,李慧忠,郑叶坚,林祖金,李惠彬,林肖彬.实时三维超声心动图联合斑点追踪成像评价妊娠期左心房功能[J].中国医学影像技术,2021,37(1):45~49 |
| 实时三维超声心动图联合斑点追踪成像评价妊娠期左心房功能 |
| Real-time three-dimensional echocardiography combined with speckle tracking imagingfor evaluation on left atrial function of normal pregnancy |
| 投稿时间：2019-12-09 修订日期：2020-06-04 |
| DOI：10.13929/j.issn.1003-3289.2021.01.009 |
| 中文关键词: 心房功能,左 妊娠 超声心动描记术,实时三维 斑点追踪成像 |
| 英文关键词:atrial function, left pregnancy echocardiography, real-time three-dimensional speckle tracking imaging |
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| 中文摘要: |
| 目的 应用实时三维超声心动图（RT-3DE）联合斑点追踪成像（STI）评价妊娠对孕妇左心房（LA）体积和功能的影响。方法 选取接受常规产前检查的102名孕妇，分别于早孕期（8~12周）及晚孕期（32~36周）超声心动图检查，应用RT-3DE获取LA最大容积（Vmax）、最小容积（Vmin）及收缩前容积（VpreA），计算LA总射血分数（TEF）、膨胀指数（EI）、主动射血分数（AEF）及被动射血分数（PEF），以STI获取LA整体纵向应变（GLS），分为储器阶段（GLSr）、管道阶段（GLScd）和泵阶段（GLSct）。将所获数据分别归入早孕组、晚孕组，以同期29名生育年龄正常女性超声心动图资料为对照组，比较3组各指标差异。结果 妊娠期间LA容积随孕周增加而加大。早孕组LA前后径、Vmax、Vmin、VpreA均高于对照组（P均<0.05），晚孕组LA前后径、Vmax、Vmin、VpreA、AEF及GLSct较早孕组及对照组均明显升高（P均<0.05），EI、PEF、GLSr及GLScd均降低（P均<0.05），而TEF组间差异无统计学意义（P>0.05）。结论 妊娠早期LA结构即开始发生变化，晚期LA结构和功能均发生改变。采用RT-3DE联合STI能更敏感地观察LA对左心室舒张功能的代偿调节作用。 |
| 英文摘要: |
| Objective To explore the effect of real-time three-dimensional echocardiography (RT-3DE) combined with speckle tracking imaging (STI) for evaluation on the structure and function of left atrium (LA) in pregnant women. Methods A total of 102 pregnant women underwent routine prenatal examinations were selected and examined by echocardiography twice in early pregnancy (8-12 weeks) and late pregnancy (32-36 weeks),respectively, and the data were enrolled into early pregnancy group and late pregnancy group. Meanwhile, 29 physical examinees in normal childbearing period were served as control group. RT-3DE was used to obtain LA maximum volume (Vmax), minimum volume (Vmin) and before atrial contraction volume (VpreA). LA total emptying fraction (TEF), expansion index (EI),active emptying fraction (AEF) and passive emptying fraction (PEF) were calculated. STI was used to obtain LA global longitudinal strain (GLS), which could be divided into reservoir phase (GLSr), conduit phase (GLScd) and contraction phase (GLSct). The above indexes were compared among three groups. Results The volume of LA increased with gestational age. The anteroposterior diameter, Vmax, Vmin and VpreA in early pregnancy group were higher than those in control group (all P<0.05). The anteroposterior diameter, Vmax, Vmin, VpreA, AEF and GLSct of late pregnancy group were higher, EI, PEF, GLSr and GLScd were lower than those in early pregnancy group and control group (all P<0.05), while there was no significant difference of TEF among groups(P>0.05). Conclusion The structure of LA began to change in the early pregnancy period, and both structure and function changed in the late pregnancy period. RT-3DE combined with STI could sensitively detect the compensatory regulation effect of LA on left ventricular diastolic function. |
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