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三维超声评估二尖瓣成形患者二尖瓣器改变的研究

发布时间:2018-06-16 15:24

  本文选题:经食管超声心动描记术 + 实时三维 ; 参考:《吉林大学》2014年硕士论文


【摘要】:目的: 研究二尖瓣脱垂患者成形术前、术后二尖瓣器各常规参数的改变,探讨各参数与二尖瓣反流面积的关系。测量二尖瓣对合高度指数,探讨其用于评价二尖瓣成形效果的临床意义。 方法: 选取2012年1月至2013年10月中日联谊医院心外科因单纯二尖瓣脱垂行二尖瓣成形术患者,30例患者入选。采用经食管三维超声探头存储图像,二尖瓣定量分析(MVQ)软件对二尖瓣成形术前、术后复跳即刻二尖瓣进行定量分析,常规分析参数包括:最大脱垂高度(HProl)、小叶脱垂体积(VProl)、环周长(C3D)、环的前外侧至后内侧直径(DAIPm)、环前后径(DAP)、前中部(A2)小叶节段的长度(L2DDA2)、后中部(P2)小叶节段的长度(L2DDP2)、前结合长度(LCA3dLf)、后结合长度(LCP3dLf)、后小叶面积(后A3DT)、前小叶面积(前A3DT)。同时记录术前、术后即刻的二尖瓣反流量(MR)。应用三维分析(3DQ)软件测量并计算二尖瓣成形术前、术后复跳即刻二尖瓣A1-P1区、A2-P2区、A3-P3区对合高度指数(CHI)。 结果: 术前HProl、VProl、C3D、DAIPm、DAP、L2DDA2、L2DDP2、LCA3dLf、LCP3dLf、后A3DT、前A3DT、MR分别为(7.12±3.86)mm、(1.26±1.11)ml、(150.30±22.08)mm、(43.89±8.42)mm、(39.39±5.73)mm、(23.82±6.23)mm、(17.24±3.72)mm、(42.52±10.24)mm、(45.92±11.64)mm、(796.63±226.71)mm2,(1240.10±418.93)mm2、(17.56±5.94)cm2,术后上述参数分别为分别为(3.35±1.64)mm、(0.18±0.15)ml、(107.37±12.97)mm、(31.79±4.19)mm、(28.64±4.57)mm、(21.53±3.14)mm、(9.33±3.67)mm、(29.56±8.06)mm、(29.33±7.76)mm、(358.23±115.55)mm2,(736.22±167.80)mm2、(1.61±1.27)cm2,术后各参数均小于术前,差异均有统计学意义(t值分别为5.260、5.582、14.620、9.054、14.967、2.354、8.712、7.221、9.335、13.046、8.681、15.485,P均<0.05)。术前LCP3dLf较LCA3dLf长,差异有统计学意义(t=-4.614,,P<0.05);术后LCA3dLf与LCP3dLf比较,差异无统计学意义(t=0.319,P0.05)。多元线性回归分析方程为: Y(MR)=-0.191+0.031X1(后A3DT)-0.350X2(L2DDA2),L2DDA2、后A3DT是MR的独立影响因素,且L2DDA2与MR成反比,后A3DT与MR成正比。二尖瓣CHI术前分别为: A1-P1区(11.56±0.92)%,A2-P2区(4.59±0.57)%,A3-P3区(5.6±0.68)%;术后复跳即刻分别为: A1-P1区(30.23±1.72)%,A2-P2区(35.12±1.65)%,A3-P3区(30.57±1.83)%。术后复跳即刻各区域二尖瓣CHI与术前比较差异均有统计学意义(t值分别为10.527、17.174和13.967,P均<0.05)。 结论: 二尖瓣成形术后,二尖瓣器各常规参数均较术前减小。术前LCA3dLf与LCP3dLf不等长,导致出现二尖瓣反流,术中保证LCA3dLf与LCP3dLf的等长意义重大。术中保留足够而合理的L2DDA2,并限制后A3DT,可减少二尖瓣反流面积。三维图像平面切割法获得二尖瓣对合高度指数,立体直观、定位准确,能够实时评估二尖瓣对合程度。
[Abstract]:Objective: to study the changes of mitral valve regurgitation area in patients with mitral valve prolapse before and after mitral valvuloplasty. To investigate the clinical significance of mitral valvuloplasty by measuring mitral involutional height index. Methods: from January 2012 to October 2013, 30 patients underwent mitral valvuloplasty in Sino-Japanese Friendship Hospital for simple mitral valve prolapse. Before mitral valvuloplasty, mitral valve was analyzed immediately after mitral valvuloplasty by means of three dimensional transesophageal ultrasound probe and mitral valve quantitative analysis (MVQ) software. Conventional analysis parameters include: maximum height of prolapse HProln, lobular prolapse volume, circumference of ring C3DX, anterolateral to posterior medial diameter of the ring, anterior and posterior diameters of DAPP, length of L2DDA2, L2DDP22, anterior nodule of the microlobular segment of the posterior middle part of the lobular segment of the L2DDA2, the length of the L2DDA2 of the microlobular segment of the posterior middle part of the lobular segment, and the length of the anterior node of the L2DDP22 segment of the lobular segment. LCA 3 d LfU, LCP 3 d LfU, posterior lobular area (posterior A3 DTT), anterior lobular area (pre A3 DTT), LCA 3 d LfU, LCP 3 d LfU, posterior lobular area (posterior A3 DTT, anterior lobular area). MRN of mitral regurgitation was recorded immediately before and after operation. Before mitral valvuloplasty, mitral valve A1-P1 region, A2-P2 region A3-P3 region involutive height index of mitral valve was measured and calculated by using 3D analysis software before mitral valvuloplasty. 缁撴灉锛

本文编号:2027159

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