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中华医学超声杂志(电子版) ›› 2020, Vol. 17 ›› Issue (06) : 540 -545. doi: 10.3877/cma.j.issn.1672-6448.2020.06.010

所属专题: 文献

心血管超声影像学

风湿性心脏病二尖瓣狭窄患者左心房功能对继发性三尖瓣反流的影响
孟红1, 潘世伟2, 孟庆龙1, 张冰1, 逄坤静1, 王浩1,()   
  1. 1. 100037 中国医学科学院北京协和医学院 国家心血管病中心 阜外医院超声影像中心
    2. 100037 中国医学科学院北京协和医学院 国家心血管病中心 阜外医院心外科
  • 收稿日期:2019-09-01 出版日期:2020-06-01
  • 通信作者: 王浩

Influence of left atrial function on secondary tricuspid valve regurgitation in patients with rheumatic mitral stenosis

Hong Meng1, Shiwei Pan2, Qinglong Meng1, Bing Zhang1, Kunjing Pang1, Hao Wang1,()   

  1. 1. Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Academy of Medical Sciences, Peking Union Medical College, Beijing 100037, China
    2. Department of Cardiac Surgery, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Disease, Fuwai Hospital, Academy of Medical Sciences, Peking Union Medical College, Beijing 100037, China
  • Received:2019-09-01 Published:2020-06-01
  • Corresponding author: Hao Wang
  • About author:
    Corresponding author: Wang Hao, Email: ;
引用本文:

孟红, 潘世伟, 孟庆龙, 张冰, 逄坤静, 王浩. 风湿性心脏病二尖瓣狭窄患者左心房功能对继发性三尖瓣反流的影响[J]. 中华医学超声杂志(电子版), 2020, 17(06): 540-545.

Hong Meng, Shiwei Pan, Qinglong Meng, Bing Zhang, Kunjing Pang, Hao Wang. Influence of left atrial function on secondary tricuspid valve regurgitation in patients with rheumatic mitral stenosis[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2020, 17(06): 540-545.

目的

探讨风湿性心脏病二尖瓣狭窄患者左心房大小及功能对继发性三尖瓣反流的影响。

方法

选取2015年2月至2017年2月来阜外医院就诊的中度或重度风湿性心脏病二尖瓣狭窄患者67例,所有患者均行二尖瓣人工瓣膜置换手术,并于术前行超声心动图检查,均明确存在继发性三尖瓣反流。选取2016年于阜外医院就诊的门诊患者20例作为正常对照组,且均于就诊时行超声心动图检查。对研究组与正常对照组各项超声参数及左心房功能进行比较,对研究组左心房功能与三尖瓣结构及功能的相关性及继发性三尖瓣反流的影响因素进行分析。

结果

研究组患者的三尖瓣瓣环直径指数与左心房面积变化率、排空分数及左心房平均应变呈强相关性(r=-0.65、-0.58和-0.59,P均<0.01)。肺动脉收缩压与左心房面积变化率、排空分数及左心房平均应变呈较强的负相关性(r=-0.60、-0.58和-0.59,P均<0.01)。Logistic多因素回归分析显示,三尖瓣瓣环直径指数、瓣叶闭合高度和肺动脉收缩压是影响术前继发性三尖瓣反流的相关因素(OR=1.916、2.382、1.059,95%CI:1.18~3.109、1.312~4.323、1.009~1.111,P均<0.05)。Logistic回归分析发现肺动脉收缩压、左心房面积变化率和左心房平均应变是影响三尖瓣瓣环增大的危险因素(OR=1.044、0.875、0.809,95%CI:1.002~1.088、0.761~0.964、0.656~0.997,P均<0.05)。

结论

左心房扩大、功能减低参与了继发性三尖瓣反流的发生,左心房面积变化率和房壁平均应变减低会引发三尖瓣瓣环增大,从而导致三尖瓣反流的发生及加重。二维斑点追踪技术分析左心房应变可以提供更早期的左心房功能信息。

Objective

To explore whether left atrial (LA) size and function influence secondary tricuspid regurgitation in patients with rheumatic mitral stenosis.

Methods

Sixty-seven patients diagnosed with moderate or severe rheumatic mitral stenosis from February 2015 to February 2017 at Fuwai Hospital were enrolled in our study. All patients underwent mitral valvular replacement and preoperative echocardiography. Secondary tricuspid regurgitation occurred in all patients. Twenty outpatients were enrolled as normal controls in our study and they also underwent echocardiography. Various echocardiography parameters and LA function were compared between the patients and normal controls. The correlations among LA function, tricuspid valvular morphology and function, and the influencing factors of secondary tricuspid regurgitation were analyzed.

Results

LA fraction of area change, LA ejection fraction, and average LA strain were strongly negatively correlated with tricuspid annular diameter index (r=-0.65, -0.58, and -0.59, respectively; P<0.01) and pulmonary artery systolic pressure (r=-0.60, -0.58, and -0.59, respectively; P<0.01). Logistic regression analysis demonstrated that tricuspid annular diameter index, leaflet tethering distance, and pulmonary artery systolic pressure were influencing factors of secondary tricuspid regurgitation (OR=1.916, 2.382, and 1.059; 95%CI: 1.18-3.109, 1.312-4.323, and 1.009-1.111, respectively; P<0.05). Logistic regression also showed that pulmonary artery systolic pressure, LA fraction of area change, and average LA strain were risk factors for increased tricuspid annular diameter index (OR=1.044, 0.875,and 0.809; 95%CI: 1.002-1.088, 0.761-0.964, and 0.656-0.997, respectively; P<0.05).

Conclusion

Secondary tricuspid regurgitation is influenced by enlarged LA and decreased LA function. Decreased LA fraction of area change and average LA strain can lead to tricuspid annular diameter dilatation, and induce or worsen secondary tricuspid regurgitation. Two dimensional speckle tracking technique could provide early information of LA function.

图1 三维超声心动图定量测量左心房容积并进行左心房功能分析。分别选定四腔心切面间隔(S)及侧壁(L)的二尖瓣环,二腔心切面的下壁(I)及前壁(A)的二尖瓣环,左心房顶部(Apex)的5个左心房心内膜取样点后,软件自动描绘出左心房的动态三维心内膜轮廓。图a为在四腔心切面选择间隔侧及侧壁的二尖瓣环S点和L点,描绘左心房内膜轮廓;图b为在二腔心切面的下壁及前壁的二尖瓣环I点和A点,描绘左心房内膜轮廓;图c为短轴切面显示心内膜描绘曲线,必要时可手动调节追踪曲线;图d为获取左心房容积
图2 在心尖四腔心切面利用二维斑点追踪技术测量风湿性心脏病二尖瓣狭窄患者的左心房长轴应变。在心尖四腔心切面自动勾划左心房心内膜,分为6个节段(房间隔和心房侧壁的基底段、中间段、顶部),得出左心房6个节段的应变和整体应变。红色曲线代表侧壁基底段,深蓝色曲线代表侧壁中间段,紫色曲线代表侧壁顶部,黄色曲线代表间隔基底段,浅蓝色曲线代表间隔中间段,绿色曲线代表间隔顶部,白色虚点曲线代表左心房平均应变
表1 风湿性心脏病二尖瓣狭窄患者(研究组)与正常对照组一般资料比较
表2 风湿性心脏病二尖瓣狭窄患者(研究组)与正常对照组术前各项超声指标比较(±s
图3 左心房面积变化率、左心房平均应变与三尖瓣瓣环直径指数的相关性分析散点图。图a为左心房面积变化率与三尖瓣瓣环直径指数的相关性分析散点图;图b为左心房平均应变与三尖瓣瓣环直径指数的相关性分析散点图
图4 左心房面积变化率、左心房平均应变与肺动脉收缩压的相关性分析散点图。图a为左心房面积变化率与肺动脉收缩压的相关性分析散点图;图b为左心房平均应变与肺动脉收缩压的相关性分析散点图
表3 继发性三尖瓣反流程度的多因素Logistic回归分析
表4 三尖瓣瓣环直径增大的多因素Logistic回归分析
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