本文選題：B型預(yù)激綜合征　切入點(diǎn)：斑點(diǎn)追蹤成像　出處：《南京醫(yī)科大學(xué)》2017年碩士論文

【摘要】：目的:分析 B 型預(yù)激綜合征(type B Wolff-Parkinson-White syndrome,B-WPW)患者左心室扭轉(zhuǎn)參數(shù)及左心室心肌縱向應(yīng)變參數(shù),探討B(tài)-WPW患者左心室運(yùn)動(dòng)模式的改變。方法:選取B-WPW患者38例,志愿者40例作為對(duì)照組,應(yīng)用二維斑點(diǎn)追蹤成像技術(shù)(two-dimensional speckle tracking imaging,2D-STI)測(cè)量 B-WPW 患者射頻消融術(shù)前(B-WPW-B組)、術(shù)后(B-WPW-A組)以及對(duì)照組左心室扭轉(zhuǎn)參數(shù)和心肌縱向應(yīng)變參數(shù);采用雙平面Simpson法測(cè)量各組左心室舒張末期容積(LVEDV)、收縮末期容積(LVESV)及左心室射血分?jǐn)?shù)(LVEF)。同步測(cè)量心電圖Ⅱ?qū)?lián)QRS波時(shí)限。結(jié)果:B-WPW患者左心室扭轉(zhuǎn)角度峰值及左心室心尖部、心底部旋轉(zhuǎn)角度峰值下降,心底部較心尖部明顯;心底部旋轉(zhuǎn)角度提前達(dá)峰,心底-心尖部旋轉(zhuǎn)角度達(dá)峰時(shí)間差值延長(zhǎng);左心室心肌整體縱向峰值應(yīng)變減低;左心室心肌后壁中間段、下壁心尖段、中間段及基底段、室間隔中間段及基底段縱向峰值應(yīng)變減低;左心室心腔擴(kuò)大,QRS波時(shí)限延長(zhǎng);射頻消融術(shù)后B-WPW患者左心室扭轉(zhuǎn)參數(shù)恢復(fù)明顯,心肌縱向應(yīng)變參數(shù)恢復(fù)較差,兩者均低于對(duì)照組。結(jié)論:B-WPW患者左心室運(yùn)動(dòng)模式發(fā)生變化,表現(xiàn)為左心室扭轉(zhuǎn)角度峰值及時(shí)序的改變,左心室心底-心尖旋轉(zhuǎn)的失同步;左心室心肌整體縱向峰值應(yīng)變及部分節(jié)段室壁縱向峰值應(yīng)變的改變;射頻消融術(shù)后近期患者運(yùn)動(dòng)模式改善,但未恢復(fù)至正常水平。
[Abstract]:Objective: to analyze the left ventricular torsion parameters and left ventricular longitudinal strain parameters in patients with type B Wolff-Parkinson-White syndrome (type B Wolff-Parkinson-White syndrome) and to explore the changes of left ventricular motion pattern in patients with B-WPW. Methods: 38 patients with B-WPW and 40 volunteers were selected as control group. Two-dimensional speckle tracking imaging2D-STI was used to measure the torsion parameters and longitudinal strain parameters of left ventricle in patients with B-WPW before radiofrequency ablation and after radiofrequency ablation. Left ventricular end-diastolic volume (LVEF), end-systolic volume (LVESVV), left ventricular ejection fraction (LVEF) and left ventricular ejection fraction (LVEF) were measured by biplane Simpson. Results the peak value of left ventricular torsion angle and left ventricular apex were measured simultaneously. The peak value of rotation angle at the bottom of the heart decreased, the peak value of the rotation angle in the bottom of the heart was higher than that in the apical part, the peak time difference of the rotation angle between the bottom and the heart was prolonged, the longitudinal peak strain of the whole left ventricular myocardium was decreased. The longitudinal peak strain of left ventricular posterior wall middle segment, inferior wall apical segment, middle segment and basal segment, interventricular septal segment and basal segment decreased, left ventricular cavity enlargement prolonged QRS wave duration. After radiofrequency ablation, the torsion parameters of left ventricle recovered significantly and the longitudinal strain parameters of myocardium recovered worse in B-WPW patients, both of which were lower than those in the control group. The changes of left ventricular torsion angle and timing, the loss of synchronization between left ventricular bottom and apex rotation, the changes of global longitudinal peak strain of left ventricular myocardium and the longitudinal peak strain of some segments of ventricular wall were observed. After radiofrequency ablation, the motility pattern of the patients improved, but did not return to normal level.
【學(xué)位授予單位】：南京醫(yī)科大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：R541.7

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