| 刘红云,邓又斌,昌盛,陈忠华,常青,黎春雷,潘铁成.超声斑点追踪技术评价移植心脏右室功能[J].中国医学影像技术,2008,24(6):869~872 |
| 超声斑点追踪技术评价移植心脏右室功能 |
| Right ventricular function evaluated by speckle tracking echocardiography in heart transplant recipients |
| 投稿时间：2008-01-28 修订日期：2008-03-24 |
| DOI： |
| 中文关键词: 超声斑点追踪技术 心脏移植 排异反应 |
| 英文关键词:Speckle tracking echocardiography Heart transplantation Rejection |
| 基金项目: |
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| 中文摘要: |
| 目的 应用超声斑点追踪技术检测移植心脏右室游离壁峰值应变、应变率、速度及位移,探讨超声斑点追踪技术评价移植心脏右室功能的价值。方法 9例心脏移植受者共进行55次超声检查;54例正常人作为对照。记录心尖四腔切面的高频二维图像,应用超声斑点追踪技术测量右室游离壁各节段的收缩期峰值应变、应变率、速度、位移以及舒张早期、心房收缩期峰值应变率、速度。结果 无排异反应及急性排异反应的心脏移植受者与正常人相比,右室游离壁各节段收缩期峰值应变、应变率、速度、位移以及舒张早期、心房收缩期峰值应变率和速度均显著降低(P＜0.05)。急性排异反应与无排异反应的心脏移植受者相比,反映右室游离壁各节段收缩功能的收缩期峰值应变、应变率、速度及位移均有下降趋势,但仅中间段和心尖段收缩期峰值位移降低具有统计学意义(P＜0.05);反映舒张功能的舒张早期和心房收缩期应变率、速度各指标中,急性排异组各节段舒张早期的峰值应变率均较无排异组显著降低(P＜0.05),各节段舒张早期的峰值速度以及心尖段心房收缩期峰值速度均与无排异组具有显著差异(P＜0.05)。结论 超声斑点追踪技术可用于快速准确评价移植心脏右室功能,在排异反应诊断方面具有一定价值。 |
| 英文摘要: |
| Objective To evaluate the value of speckle tracking echocardiography for assessing right ventricular function in heart transplant recipients. Methods Nine heart transplant recipients underwent 55 echocardiographic studies after heart transplantation. High frame rate two-dimensional images were recorded from apical four-chamber view. Peak systolic strain, strain rate, velocity, displacement and peak strain rate and velocity in early diastole and during atrial contraction of right ventricular free wall were measured using speckle tracking echocardiography. Fifty-four healthy individuals were measured as controls. Results Peak systolic strain, strain rate, velocity, displacement and peak strain rate and velocity in early diastole and during atrial contraction of all segments in right ventricular free wall reduced significantly in transplant recipients with and without acute rejection when compared with the controls (P＜0.05). Although the peak systolic strain, strain rate, velocity, displacement of segments in right ventricular free wall in transplant recipients with acute rejection showed the tendency to decrease when compared with transplant recipients without rejection, only the peak systolic displacement of middle and apical segment decreased significantly (P＜0.05). However, the peak strain rate and velocity in early diastole of all segments and the peak velocity during atrial contraction of apical segment in transplant recipients with acute rejection showed significant difference when compared with transplant recipients without rejection (P＜0.05). Conclusion Speckle tracking echocardiography can precisely quantify right ventricular function noninvasively in heart transplant recipients and provide some value in rejection diagnosis. |
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