超声心动图评价高血压患者右室重构与右室功能的研究

目的 探讨超声心动图评价高血压右室重构及右室功能的临床价值.方法 高血压患者62例,按左室重量指数分为无左室肥厚组(A组,33例)和左室肥厚组(B组,29例).对照组为28例健康者.二维超声测量右室前壁厚度(RVAWTd)、右室舒张期内径(RVEDd);三尖瓣反流法估测肺动脉收缩压(PASP);脉冲组织多普勒成像技术(PW-TDI)测量三尖瓣环心肌运动收缩期峰值速度(Sm)、舒张早期峰值速度(Em)、舒张晚期峰值速度(Am)和S峰速度时间积分(Sm-VTI),分别采用PW-TDI与脉冲多普勒测量右室Tei指数.结果 与对照组比较,A、B组Em和Em/Am下降,Am和Tei指数升高(均P＜0.01);与A组比较, B组Em、Em/Am、Sm下降,Am、Tei指数、RVAWTd及PASP升高(P＜0.05,P＜0.0 1).两种方法所测Tei指数存在相关性:对照组(r＝0.78,P＜0.01),高血压组(r＝0.72,P＜0.01).结论 高血压患者右室功能减低,在左室肥厚同时可发生右室重构并进一步影响右室功能,TDI测定右室Tei指数能简便有效评价高血压右室功能.     

超声心动图评价高血压病患者左心功能

目的运用超声心动图技术综合评价高血压病患者左室收缩功能和舒张功能。方法高血压病组56例和对照组36例,M-型和二维(2D)超声心动图检测:左房内径(LAd),舒张期室间隔厚度(IVST)和左室后壁厚度(PWT),左室舒张末期内径(LVDd),二尖瓣EF斜率,室间隔及左室后壁运动幅度,左室射血分数(EF),左室短轴缩短率(FS),每搏量(SV);脉冲多普勒(PW)检测二尖瓣口舒张早期充盈峰速度(VE),舒张晚期充盈峰速度(VA),E/A比值,等容舒张时间(IVRT)。结果高血压病患者左室壁与室间隔收缩期运动幅度普遍增强,与对照组比较P<0.01;左室收缩功能各项参数(EF、FS、SV)高于对照组(P<0.05),高血压病组左室舒张功能各参数异常,表现为VE减低,VA升高,E/A<1,IVRT延长,MV-EF斜率减慢,与对照组比较P<0.001;左房扩大(P<0.001)。结论超声心动图技术可反映高血压病患者左心结构和功能变化,为临床诊治提供客观依据。     

多普勒组织成像鉴别肥厚型心肌病舒张功能假性正常

目的　探讨应用多普勒组织成像 (DTI)二尖瓣环舒张速度鉴别肥厚型心肌病舒张功能假性正常。方法　在正常人与肥厚型心肌病患者中应用脉冲多普勒技术分别测量二尖瓣口舒张早期峰值速率 (E)、舒张晚期峰值速率 (A) ,肺静脉收缩波 (S)、舒张波 (D)及心房收缩波 (Ar)。转换DTI速度模式 ,测量二尖瓣环各点舒张早期峰值速率 (Ea)、舒张晚期峰值速率 (Aa)并计算Ea/Aa。结果　肥厚型心肌病舒张功能假性正常患者与正常人二尖瓣E、A、E/A差异无显著性意义 (均 P >0 .0 5 ) ,肺静脉S、S/D、Ar差异有显著性意义 (均 P <0 .0 1) ,二尖瓣环Ea及Ea/Aa差异有显著性意义 (P <0 .0 1) ,Aa差异无显著性意义 (P >0 .0 5 )。结论　多普勒组织成像二尖瓣环Ea及Ea/Aa可鉴别肥厚型心肌病舒张功能假性正常     

脉冲多普勒与组织多普勒技术对原发性高血压伴左室肥厚患者的右心室舒张功能的评价

目的:探讨组织多普勒与脉冲多普勒2种方法对原发性高血压伴左室肥厚患者右心室舒张功能的评价。材料与方法:对48例原发性高血压患者经超声检测左室肥厚患者和50例健康体检者先采用脉冲多普勒超声心动图测量右室舒张期三尖瓣口充盈早期血流峰值速度(E)和心房收缩峰值(A),并计算E/A值;再应用组织多普勒测量三尖瓣环舒张早期运动速度(e)、舒张晚期运动速度(a)及计算e/a值,并与健康组进行比较。结果:原发性高血压伴左室肥厚组脉冲多普勒与组织多普勒E、A比值均小于1(E/A1),而健康组E、A比值均大于1(E/A1);高血压伴左室肥厚组e、e/a值均较健康组显著减低(P0.01)。结论:原发性高血压患者伴左室肥厚可引起右室舒张功能减低,组织多普勒与脉冲多普勒显像均适合应用于评价原发性高血压伴左室肥厚对右室舒张功能的影响。组织多普勒与脉冲多普勒2种方法所测e、e/a值在原发性高血压伴左室肥厚患者的右心室舒张功能评价中均具有临床应用价值。     

Noninvasive indexes of left atrial diastolic function in hypertrophic cardiomyopathy.

OBJECTIVES: Our goal was to noninvasively assess left atrial diastolic function and its relation to the impaired left ventricular filling in patients with hypertrophic cardiomyopathy. METHODS AND RESULTS: We studied 34 patients with hypertrophic cardiomyopathy, 26 patients with secondary forms of left ventricular hypertrophy (aortic stenosis, fixed subaortic stenosis, hypertension), and 21 control subjects. Left atrial diastolic function was assessed by measuring acceleration time (SAT), deceleration time (SDT), and the EF (mean deceleration rate) slope of the pulmonary venous flow systolic wave (SW). Left ventricular diastolic function assessed by transmitral Doppler included peak early left ventricular and peak atrial filling velocities, the ratio of early-to-late peak velocities, isovolumic relaxation time, deceleration time, and EF slope. In patients with hypertrophic cardiomyopathy, acceleration time was significantly reduced (P<.05), deceleration time was significantly prolonged (P<.0001), and EF slope was significantly reduced (P<.01). These indexes were similar among the other two groups. No statistically significant difference existed between the subgroups of hypertrophic cardiomyopathy in the above indexes. Patients with hypertrophic cardiomyopathy and secondary forms of left ventricular hypertrophy had evidence of left ventricular diastolic dysfunction. In patients with hypertrophic cardiomyopathy, no correlation existed between left atrial and left ventricular diastolic function indexes (r = -0.26 to 0.33). CONCLUSIONS: Echocardiographic indexes of left atrial relaxation and filling are abnormal in patients with hypertrophic cardiomyopathy but not in secondary forms of left ventricular hypertrophy. These indexes are abnormal in all forms of hypertrophic cardiomyopathy irrespective of left ventricular outflow tract obstruction and distribution of hypertrophy; they are not solely attributable to left ventricular diastolic dysfunction. The above may imply that hypertrophic cardiomyopathy is a cardiac myopathic disease that involves the heart muscle as a whole, irrespective of distribution of hypertrophy and obstruction.     

组织多普勒成像技术评估慢性房颤患者左室壁运动

目的 应用组织多普勒成像技术（DTI）探讨慢性房颤患者的室壁运动特点,为临床诊治提供重要的信息,方法,将研究分为三组,A组为18例正常对照,B组为15例心房大小正常的房颤患者,C组为16例心房扩大的房颤患者,所有患者均无严重瓣膜病或节段性室壁运动异常,采用HP SONOS 5500超声显像仪和脉冲DTI,分别在心尖四腔心切面和胸骨旁长轴切面测定左室侧壁和后壁收缩期峰值速度（VS）,舒张期峰值速度（VE）,心电图QRS波起始至收缩期峰值速度的平均时间T1,心电图QRS波起始至舒张期峰值速度的平均时间T2,平均心率为R－R,结果 （1）A组正常人均有舒张早期和晚期两个波峰（E峰和A峰）,B组和C组房颤患者均只有一个舒张期波峰（E峰）,（2）A组与B组这间的DTI测值差异均无显著性意义（均为P＞0．05）,（3）C组左室侧的VS显著小于A组（P＜0．05）,C组左室后壁的VS,VE均显著大于A组（P均＜0．05）,C组侧壁的T1／（R－R）^1/2,Ts/(R-R)1/2显著高于A组（P均＜0．05）,C组后壁的T1／（R－R）^1/2,T2/(R-R)^1/2与A组比较差异无显著性意义（P均＞0．05）,结论 左房增大的房颤患者左室壁在长轴方向收缩活动减弱,舒张期峰值速度延迟,在短轴方向舒缝活动增强,DTI技术能精确地定量分析房颤患者的室壁活动,可成为评价房颤患者心肌舒缩功能的无创伤性新方法。     

超声组织多普勒成像评价儿童先天性心脏病并肺动脉高压患者心室功能研究

目的 探讨超声组织多普勒成像技术评价儿童先天性心脏病并肺动脉高压患者心室功能的价值.方法 20例先天性心脏病并肺动脉高压、20例先天性心脏病无肺动脉高压患儿及24例门诊体检健康儿童,分别行组织多普勒超声心动图检查.心尖四腔心切面测量左心室侧壁二尖瓣环附着处、右心室侧壁三尖瓣环附着处收缩期S波峰速度(Sm)、舒张早期负向E波峰速度(Em)、舒张晚期负向A波峰速度(Am)、等容收缩间期(ICT)、等容舒张间期(IRT)、射血时间(ET),计算左心室、右心室Tei指数,比较各组间差异,并分析先天性心脏病并肺动脉高压组患儿右心室组织多普勒参数与肺动脉收缩压(sPAP)的相关性.结果 先天性心脏病并肺动脉高压组患儿左心室、右心室Em及左心室ET降低,而左心室、右心室Am、ICT、IRT、Tei指数均异常升高.右心室IRT与sPAP具有良好的正相关.结论 儿童先天性心脏病并肺动脉高压患者左右心室功能均受损,以右心室舒张功能及左心室舒张收缩功能下降为主,右心室IRT可作为预测肺动脉高压的新无创指标.     

高血压病的P波改变与左室舒张功能相关性研究

目的：研究高血压病的ＰＩ皮改变与左室舒张功能相关性,为早期估测高血压病的心功能变化提供依据,方法：对８７例高血压患者测量血压、描记标准１ ２导联心电图及进行超声心动图检查,对比Ｐ波指标正常与异常组的其他参数（包括血压、年龄、病程及左室舒张功能等）差异。计算Ｐ波指标与其他参数的相关系数。结果：Ｍａｃｒｕｚ指数、Ｐ波宽度及Ｖ１导联心房终末电势（ＰＴＦＶ１）异常分别为６６％、６０％和４８％,且高血压患者Ａ峰、Ａ／Ｅ比值升高。Ｍａｃｒｕｚ指数和Ｐ波宽度与Ａ峰、Ａ／Ｅ比值和病程正相关,ＰＴＦＶ１与Ａ／Ｅ比值负相关。结论：高血压病的Ｐ波异常是普遍存在的。它反映了左室舒张功能障碍。     

多普勒组织成像技术在评价糖尿病患者心脏功能方面的临床研究

目的　探讨多普勒组织成像技术 (DTI)评价 型糖尿病患者左室整体功能的临床应用价值。方法　采用 HP Sonos 5 5 0 0型超声诊断仪 ,对 34例 型糖尿病患者和 1 6例正常人进行了二尖瓣环运动速度的测定 ,并用常规超声心动图法检测左室收缩舒张功能指标 ,对这两组参数对比分析。结果　发现糖尿病组 Em、 Am、Em/Am与对照组比较有显著性差异 ;同时 L Ad、 E、 A、 E/A、 EDT、 IVRT等指标在两组间亦有显著性差异 ;以Em/Am<1为标准 ,对糖尿病患者舒张功能异常的检出率为 2 7/34(79.4 1 % ) ,而以 E/A<1或 E/A>2为标准其检出率为 2 2 /34(6 4 .71 % )。结论　 型糖尿病患者舒张功能异常早于收缩功能异常 ;DTI技术能敏感、准确评价左室舒张功能 ,尤其是对二尖瓣血流频谱呈假性正常化的舒张功能减退者     

Tei指数和组织多普勒联合N端B型钠尿肽前体评价右心早期放射性损伤

目的探讨Tei指数和组织多普勒成像(TDI)联合N端B型钠尿肽前体(NT-proBNP)评价胸部肿瘤患者放疗后右心早期损伤的价值。方法对21例接受胸部全程放疗的胸部肿瘤患者,于放疗前、放疗后1天和1个月行NT-proBNP和超声心动图检查,检查指标:①Tei指数;②常规指标,包括三尖瓣血流舒张早期峰值流速(E)、心房收缩期峰值流速(A)、E/A和E峰减速时间;右心室舒张末期内径和右心房收缩末期内径,右心室面积变化率及三尖瓣瓣环运动幅度;③TDI:三尖瓣环内侧和外侧处收缩期峰值速度(Sa)、舒张早期峰值速度(Ea)、舒张晚期峰值速度(Aa)及E/Ea。结果与放疗前相比,NT-proBNP在放疗后1天明显升高(P<0.05),放疗后1个月降低;放疗后Tei指数升高,Sa、Ea减低,Aa和E/Ea均升高;常规指标在放疗前后无明显变化。结论胸部肿瘤患者放疗后出现右心功能早期轻度损伤;Tei指数、DTI联合NT-proBNP可对其进行评价。     

Left ventricular diastolic dysfunction in patients with hypertension and preserved systolic function

OBJECTIVE: To assess prospectively diastolic function in hypertensive patients with preserved left ventricular function, particularly focusing on the limitation of the transmitral flow velocity curve alone to detect diastolic dysfunction. PATIENTS AND METHODS: Comprehensive Doppler analysis was performed in 51 hypertensive patients with preserved left ventricular systolic function. RESULTS: The ratio of the peak early diastolic filling wave velocity to the peak velocity of filling wave at atrial contraction was less than the age-adjusted mean value minus 2 SD in 16 patients, and the other 35 patients had a "normal" transmitral Doppler signal. However, the combined transmitral and pulmonary venous Doppler analysis revealed that 12 of these 35 patients had a "pseudonormal" pattern. The prevalence of diastolic dysfunction was estimated at 31% with use of transmitral Doppler alone but increased to 55% when comprehensive Doppler analysis was used (P < .05). CONCLUSION: The presence of diastolic dysfunction has been frequently overlooked in hypertensive patients with transmitral Doppler analysis alone, and an assessment of diastolic function with a comprehensive Doppler analysis is needed in patients at risk for diastolic dysfunction.     

Analysis of athletes’ heart by tissue Doppler and strain/strain rate imaging

After regular and prolonged training, some physical and structural changes occur in the heart. Strain (S) imaging and Strain Rate (SR) imaging are new and effective techniques derived from tissue Doppler imaging (TDI) which examine systolic and diastolic functions. The aim of the present study was to evaluate left ventricular TDI and S/SR imaging properties in athletes and sedentary controls. The study population consisted of 26 highly trained athletes (group I) and age, sex and body mass index (BMI) adjusted 23 control subjects (group II) who had no pathological conditions. Using standard transthoracic and Doppler echocardiographical measurements and reconstructed spectral pulsed wave tissue Doppler velocities, the S/SR imaging of six different myocardial regions were evaluated. There was a significant increase in left ventricular systolic (LVSD) and diastolic (LVDD) diameter, inter-ventricular septum (IVS), left ventricular mass (LVm), left atrial diameter (LA), and transmitral Doppler peak E velocity (flow velocity in early diastole) between group I and group II in the case of echocardiographic findings. In athletes, TDI analysis showed a significantly increased mitral annulus lateral TDI peak early diastolic (E) velocity (18.8 ± 4.1 cm/s vs. 15 ± 3.5 cm/s, P < 0.01), septal TDI peak E velocity (15.8 ± 2.8 cm/s vs. 12.8 ± 2.4 P < 0.001). There were no significant differences in myocardial velocity imaging parameters between group I and group II. Peak systolic strain/strain rates of septal and lateral walls in group I were significantly higher than group II. This study demonstrates that left ventricular S/SR imaging was higher in athletes than in healthy subjects. In addition to traditional echocardiographic parameters, SI/SRI could be utilised as a useful echocardiographic method for cardiac functions of athletes.     

超声心动图评价原发性高血压病不同左心室构型舒张功能的变化

目的探讨超声心动图多项指标评价原发性高血压病不同左室构型患者左心室舒张功能的改变。方法选择正常对照组29例,原发性高血压患者116例,按照Ganau分型法,即根据左室质量指数（LVMI）和相对室壁厚度（Rwr）将其分为4组。常规脉冲多普勒（PWD）测量二尖瓣口舒张早期峰值流速（VE）、舒张晚期峰值流速（VA）及两者比值E／A。测量右上肺静脉收缩期峰值流速（VS）、舒张期峰值流速（VD）、心房收缩期负向峰值流速（AR）,计算S／D。PWD测量等容舒张期时间（IVRT）。组织多普勒技术（TDI）测量二尖瓣后瓣环处舒张早期与舒张晚期峰值速度及其比值（Ea／Aa）。结果与正常对照组比较,CR、CH及EH组的E／A比值降低,差异有统计学意义（P〈0．05）;CR组的S／D比值增大（P〈0．01）;高血压各组的AR及IVRT明显增大及延长（P〈0．001）;CR组、CH组、EH组的Ea／Aa比值明显降低（P〈0．01）;TDI对舒张功能减低的检出率（81％）高于PWD检出率（71．6％）j差异有统计学意义（P〈0．01）。结论原发性高血压患者无论左心室构型如何,左心室舒张功能均已发生改变,以向心性肥厚组及离心型肥厚组明显。多指标联合应用能较全面地反映左心室舒张功能变化,且TDI较PWD更能敏感、简便及准确地判断高血压患者左心室舒张功能异常。     

Cardiac performance during exercise in hypertensive patients without ventricular hypertrophy

Background  Reduced systolic reserve on effort may be present in subjects with hypertension but no evidence of hypertensive cardiomyopathy. We assessed the determinants of abnormal cardiac performance during exercise in hypertensive patients without left ventricular hypertrophy.
Materials and methods  Thirty-five newly diagnosed, never-treated-earlier hypertensive patients without definite indication for left ventricular hypertrophy at echocardiography underwent radionuclide ambulatory monitoring of left ventricular function at rest and during upright bicycle exercise testing.
Results  The patients were classified into two groups according to their ejection fraction response to exercise. In 21 patients (group 1), the ejection fraction increased ≥ 5% with exercise and in 14 patients (group 2), the ejection fraction either increased < 5% or decreased with exercise. Patients of group 1 had lower peak filling rate at rest and less augmentation in end-diastolic volume during exercise (both P  <   0·01) when compared with patients of group 2. A significant relationship between the magnitude of change in ejection fraction with exercise and both peak filling rate at rest ( r  = 0·58, P  <   0·01) and exercise-induced change in end-diastolic volume ( r  = 0·45, P  <   0·01) was found.
Conclusions  In newly diagnosed, never-treated-earlier hypertensive subjects with no evidence of hypertensive cardiomyopathy, the cardiac response to exercise is dependent on adequate diastolic filling volume to maintain systolic performance.     

多普勒组织成像对高血压左心室肥厚患者左心室舒张功能的评价

目的 应用多普勒组织成像（DTI）技术评价高血压左心室肥厚患者左心室舒张功能，并与二尖瓣血流频谱作对比。方法 研究对象为35例临床与超声诊断的高血压左心室肥厚患者（高心组）和20例正常人（对照组）。采用心尖四腔观，选取室间隔中段，左室侧壁中段，二尖瓣环-室间隔交界处、二尖瓣环一侧壁交界处为取样点，分别显示各部位组织的运动情况，并测量心肌收缩峰速度（Vs）、心肌舒张早期峰值速度（Ve）、舒张晚期峰值速度（VA）及VE与VA比值（VE/VA）。常规测量二尖瓣血流频谱，与DTI参数作对比。结果 与对照组相比，高心组室间隔中段，侧壁中段、二尖瓣环VE、VE/VA均显著下降，各部位VE/VA均与二尖瓣血流频谱E/A之间存在高度相关性；DTI对高血压左心室肥厚患者左心室舒张功能异常的诊断灵敏度高于二尖瓣血流频谱。结论 DTI技术可以定量评价高血压左心室肥厚患者的左心室舒张功能，并且比常规脉冲波多普勒二尖瓣血流参数更加敏感。     

组织多普勒成像技术对不同心肌肥厚模型大鼠心功能的研究

目的探讨组织多普勒成像(TDI)技术对不同心肌肥厚模型大鼠心脏舒张功能评价的可行性。方法将25只大鼠采用两种方法制备心肌肥厚模型,分别为自发性高血压心肌肥厚组(SH)15只和以缩窄腹主动脉形成的心肌肥厚组(SAAC)10只,并以10只正常Wistar Kyoto大鼠作为对照组,比较各组血压、心率、体重、组织多普勒和常规超声心动图心功能指标的变化。结果SH和SAAC组血压及心率均高于对照组(P<0.05),各组间体重差异无统计学意义。SH和SAAC组心肌厚度均大于对照组(P<0.05),其前后壁厚度均大于2.0mm;SH及SAAC组左心室收缩末期内径(LVEDs)均小于对照组(P<0.05);3组间左心室射血分数(LVEF)和短轴缩短率(LVFS)差异无统计学意义。SH和SAAC组二尖瓣环后室间隔侧TDI各峰值均较对照组增高(P<0.01),而收缩期与舒张期峰值速度比值(Ea/Aa)减低;SH和SAAC两组相比,二尖瓣环TDI各个指标之间差异均无统计学意义(P>0.05)。大鼠二尖瓣口血流频谱和二尖瓣环TDI频谱在心率增快时,失去正常的舒张期双峰形态,呈现为单峰状;两者融合率均随心率增快而增加,且均在心率350次/min时出现双峰融合率明显增加。但TDI二尖瓣环频谱的融合率远远小于二尖瓣口血流频谱(29%和63%)。结论大鼠二尖瓣环后间隔Ea/Aa是反映早期心室舒张功能变化的敏感指标;两组心肌肥厚大鼠模型心腔变化和TDI指标改变类似。二尖瓣环TDI指标在评价大鼠舒张功能方面优于二尖瓣血流指标。     

Abnormal diastolic flow patterns in hypertrophic cardiomyopathy: evaluation by simultaneous Doppler echocardiography, cineangiography, and hemodynamics

A 62-year-old woman with an 8-year history of hypertrophic cardiomyopathy and recent septal myotomy and/or myectomy underwent simultaneous hemodynamic and two-dimensional and Doppler echocardiographic evaluation. Evidence of abnormal diastolic relaxation in the absence of obstruction or systolic cavity obliteration was observed. Two abnormal patterns of diastolic blood flow were detected: flow from the left ventricular outflow tract toward the left ventricular body during isovolumetric relaxation, and middiastolic blood flow from the left ventricular body toward the mitral apparatus. This case provides evidence of abnormal diastolic function and two patterns of abnormal diastolic blood flow in a patient with hypertrophic cardiomyopathy but without a systolic gradient or cavity obliteration. These findings support the importance of disturbed diastolic function in the pathogenesis of hypertrophic cardiomyopathy.     

组织多普勒评价高血压性和运动性心脏重塑的差异

目的探讨TDI技术在评价高血压性心脏重塑与运动性心脏重塑差异上的价值。方法收集高血压性心肌肥厚患者31例(高血压组)、运动员35名(运动员组)和健康志愿者50名(对照组),采用M型及TDI超声心动图观测心脏重塑后左心室结构和功能的变化。结果高血压组与运动员组的室间隔、左心室后壁厚度、左心室舒张末期内径以及左心室心肌质量指数均高于对照组。脉冲多普勒测量结果中,与对照组相比,高血压组A峰升高、E/A值降低(P均<0.05),运动员组A峰降低、E/A值升高(P均<0.05);TDI测量结果中,与对照组和运动员组相比,高血压组舒张早期(Em)、收缩期(Sm)心肌运动速度及E/Em值均出现明显变化(P均<0.05)。结论 TDI超声心动图有助于区分高血压性和运动性心脏重塑。     

组织多普勒成像评价急性心肌梗死患者自体骨髓干细胞移植治疗后左室舒张功能

目的应用组织多普勒成像(TDI)技术评价心肌干细胞移植治疗急性心肌梗死对左室舒张功能的影响。方法自体骨髓干细胞移植治疗急性心肌梗死患者共26例,随访3个月,治疗前、后用TDI技术分别测量左室二尖瓣环水平的收缩期峰值速度(Sm),舒张早期峰值速度(Em),舒张晚期峰值速度(Am)及Em/Am,并与血流多普勒指标E峰速度(E),A峰速度(A)、E/A及E峰减速时间(EDT)进行比较,评价自体骨髓干细胞移植治疗急性心肌梗死对左室舒张功能的影响。结果治疗后EDT较治疗前降低(P<0.05),治疗后Em及Em/Am较治疗前升高(P<0.05),治疗后E、A、E/A、Sm、Am较治疗前比较差异无统计学意义。结论自体骨髓干细胞移植治疗急性心肌梗死后,左室舒张功能明显改善,TDI技术在评价左室舒张功能方面较二尖瓣血流频谱更准确、敏感。     

Systolic dysfunction as evaluated by tissue Doppler imaging echocardiography and mortality in septic patients: A systematic review and meta-analysis

PurposeSeptic induced cardiomyopathy has a wide spectrum of presentation, being associated with systolic and/or diastolic dysfunction. There is currently no evidence of association between left ventricular (LV) systolic dysfunction and mortality in septic patients.MethodsWe conducted a systematic review and meta-analysis to investigate the association between systolic wave (s') obtained with Tissue Doppler Imaging (TDI) and mortality in septic patients. Secondary outcome was the association of LV ejection fraction with mortality.ResultsIn the primary analysis we included a total of 13 studies (1197 patients, mortality 39.9%); overall s' wave was not significantly different between survivors and non-survivors (Standardized Mean Difference 0.20, 95%Confidence-Interval − 0.18, 0.59). This result was confirmed also in sub-groups analyses according to regional criteria of TDI sampling. A post-hoc analysis including only septic shock patients confirmed that s' wave was not associated with mortality. Several sensitivity analyses confirmed these results. We found no evidence of publication bias. The secondary analysis (11 studies, 1081 patients, mortality 36.7%) showed that LV ejection fraction was not associated with mortality (Mean Difference 0.98, 95% Confidence-Interval − 1.79,3.75).ConclusionsThere is no association between mortality and LV systolic function as evaluated by TDI s' wave in septic patients.