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三維超聲評估二尖瓣成形患者二尖瓣器改變的研究

發(fā)布時間:2018-06-16 15:24

  本文選題:經食管超聲心動描記術 + 實時三維。 參考:《吉林大學》2014年碩士論文


【摘要】:目的: 研究二尖瓣脫垂患者成形術前、術后二尖瓣器各常規(guī)參數(shù)的改變,探討各參數(shù)與二尖瓣反流面積的關系。測量二尖瓣對合高度指數(shù),探討其用于評價二尖瓣成形效果的臨床意義。 方法: 選取2012年1月至2013年10月中日聯(lián)誼醫(yī)院心外科因單純二尖瓣脫垂行二尖瓣成形術患者,30例患者入選。采用經食管三維超聲探頭存儲圖像,二尖瓣定量分析(MVQ)軟件對二尖瓣成形術前、術后復跳即刻二尖瓣進行定量分析,常規(guī)分析參數(shù)包括:最大脫垂高度(HProl)、小葉脫垂體積(VProl)、環(huán)周長(C3D)、環(huán)的前外側至后內側直徑(DAIPm)、環(huán)前后徑(DAP)、前中部(A2)小葉節(jié)段的長度(L2DDA2)、后中部(P2)小葉節(jié)段的長度(L2DDP2)、前結合長度(LCA3dLf)、后結合長度(LCP3dLf)、后小葉面積(后A3DT)、前小葉面積(前A3DT)。同時記錄術前、術后即刻的二尖瓣反流量(MR)。應用三維分析(3DQ)軟件測量并計算二尖瓣成形術前、術后復跳即刻二尖瓣A1-P1區(qū)、A2-P2區(qū)、A3-P3區(qū)對合高度指數(shù)(CHI)。 結果: 術前HProl、VProl、C3D、DAIPm、DAP、L2DDA2、L2DDP2、LCA3dLf、LCP3dLf、后A3DT、前A3DT、MR分別為(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,術后上述參數(shù)分別為分別為(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,術后各參數(shù)均小于術前,差異均有統(tǒng)計學意義(t值分別為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)。術前LCP3dLf較LCA3dLf長,差異有統(tǒng)計學意義(t=-4.614,,P<0.05);術后LCA3dLf與LCP3dLf比較,差異無統(tǒng)計學意義(t=0.319,P0.05)。多元線性回歸分析方程為: Y(MR)=-0.191+0.031X1(后A3DT)-0.350X2(L2DDA2),L2DDA2、后A3DT是MR的獨立影響因素,且L2DDA2與MR成反比,后A3DT與MR成正比。二尖瓣CHI術前分別為: A1-P1區(qū)(11.56±0.92)%,A2-P2區(qū)(4.59±0.57)%,A3-P3區(qū)(5.6±0.68)%;術后復跳即刻分別為: A1-P1區(qū)(30.23±1.72)%,A2-P2區(qū)(35.12±1.65)%,A3-P3區(qū)(30.57±1.83)%。術后復跳即刻各區(qū)域二尖瓣CHI與術前比較差異均有統(tǒng)計學意義(t值分別為10.527、17.174和13.967,P均<0.05)。 結論: 二尖瓣成形術后,二尖瓣器各常規(guī)參數(shù)均較術前減小。術前LCA3dLf與LCP3dLf不等長,導致出現(xiàn)二尖瓣反流,術中保證LCA3dLf與LCP3dLf的等長意義重大。術中保留足夠而合理的L2DDA2,并限制后A3DT,可減少二尖瓣反流面積。三維圖像平面切割法獲得二尖瓣對合高度指數(shù),立體直觀、定位準確,能夠實時評估二尖瓣對合程度。
[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. 緇撴灉錛

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