目的 探讨应用超声心动图评价肺动脉高压(PAH)致心肌损伤的临床价值及氧化应激损伤的相关性。方法 12周龄SD大鼠48只。随机均分为4组:空白对照组、NaCl对照组、PAH 2周组及PAH 4周组。建模后,采用超声检测相关参数。HE及Masson染色观察右心室的心肌细胞及胶原纤维分布情况,测定超氧化物歧化酶(SOD)活力,还原型谷胱甘肽(GSH)和丙二醛(MDA)水平,并评价其与超声参数的相关性。结果 PAH组大鼠超声相关参数均变化明显,且逐渐加重。HE及Masson染色显示心肌细胞增大,心肌间隙中的胶原纤维明显增多,且4周组较明显。PAH组大鼠心肌组织中的SOD活力及GSH水平较低,而MDA水平较高,有变化趋势,且与超声参数有显著相关性,差异均有统计学意义(P<0.05)。结论 PAH导致大鼠右心室心肌组织结构改变,同时引起氧化应激相关指标的变化。

Objective To explore the clinical value of echocardiographic evaluation of myocardial injury caused by pulmonary hypertension (PAH) and the correlation of oxidative stress injury. Methods Forty-eight 12-week-old SD rats were collected. They were randomly divided into 4 groups: blank control group, NaCl control group, PAH 2-week group and PAH 4-week group. After modeling, ultrasound was used to detect relevant parameters. HE and Masson staining were used to observe the distribution of myocardial cells and collagen fibers in the right ventricle. Superoxide dismutase (SOD) activity, reduced glutathione (GSH) and malondialdehyde (MDA) levels were measured, and their correlations with ultrasound parameters were evaluated. Results The ultrasound-related parameters of rats in the PAH group changed significantly and gradually increased.HE and Masson staining showed that cardiac myocytes were enlarged and collagen fibers in myocardial interstices were increased, and it was more obvious in the 4-week group.In the PAH group, the SOD activity and GSH levels were lower, while the MDA levels were higher, and there was a trend of change, and there was a significant correlation with ultrasound parameters. The difference was statistically significant (P<0.05). Conclusion PAH causes changes in the myocardial tissue structure of the rat right ventricle, as well as changes in oxidative stress-related indicators.

目的 观察结直肠癌患者使用联合药物FOLFOX化疗前后左心室应变参数的变化。方法 选取健康人30例作为正常组,收集病理确诊为结直肠癌并采用FOLFOX(5-氟尿嘧啶+奥沙利铂+亚叶酸钙)化疗的患者30例,以自身对照做研究,分别在化疗前、化疗1个周期后、化疗6个周期后、化疗12个周期后48 h内完成心脏超声检查,采集左心室的动态图像,获取常规参数:LVEDd、LVEDs、IVSd、LVPWd、LVEDV、LVESV、LVEF、LVFS;三维参数:SPI、SV、CO、LVEDMass、LVESMass、GAS、GRS、GLS、GCS,并比较化疗前后这些数值的变化。结果 正常组与各化疗组相比对,LVEDd、LVEDs、IVSd、LVPWd、LVPW、LVESV、SPI的变化均无统计学意义(P>0.05);LVEF、LVFS、SV、CO在化疗中、后期出现了降低,差异有统计学意义(P<0.05),HR、LVEDMass、LVESMass略升高,差异有统计学意义(P<0.05);化疗后GLS及GAS较化疗前明显减低(P<0.05),其中GAS的ROC曲线下面积为0.883,P<0.001,选30%为诊断界点,灵敏度为86.7%,特异度为80%;GLS的ROC曲线下面积为0.888,P<0.001,选19%为诊断界点,灵敏度为73.3%,特异度为90.0%。结论 三维斑点追踪技术能够早期发现FOLFOX致结直肠癌患者左心室功能的变化,其中LVGLS、LVGAS是有力的观测指标。

Objective To observe the changes of left ventricular strain parameters in patients with colorectal cancer before and after combined chemotherapy with FOLFOX. Methods 30 healthy people were selected as normal group, and 30 patients with pathologically diagnosed colorectal cancer and FOLFOX (5-fluorouracil +oxaliplatin+calcium leucovorin) chemotherapy were collected. Before, after 1 cycle of chemotherapy, after 6 cycles of chemotherapy, and within 48 hours after 12 cycles of chemotherapy, cardiac ultrasound examination was performed, and dynamic images of the left ventricle were collected to obtain conventional parameters: LVEDd, LVEDs, IVSd, LVPWd, LVEDV, LVESV, LVEF, LVFS; three-dimensional parameters: SPI, SV, CO, LVEDMass, LVESMass, GAS, GRS, GLS, GCS, and the changes of these values before and after chemotherapy were compared. Results Compared with the chemotherapy group, the normal group had no statistically significant changes in LVEDd, LVEDs, IVSd, LVPWd, LVPW, LVESV, and SPI (P>0.05); LVEF, LVFS, SV, CO were in the middle and late stages of chemotherapy. There was a decrease, the difference was statistically significant (P<0.05), HR, LVEDMass, LVEESMass were slightly increased, the difference was statistically significant (P<0.05); LGS and GAS after chemotherapy were significantly lower than before chemotherapy (P<0.05), the area under the ROC curve of GAS is 0.883, P=0.000, 30% is selected as the diagnostic boundary, the sensitivity is 86.7%, and the specificity is 80%; the area under the ROC curve of GLS is 0.888, P=0.000, 19% as a diagnostic boundary, the sensitivity is 73.3% and the specificity is 90.0%. Conclusion Three-dimensional speckle tracking technology can detect the changes of left ventricular function in patients with colorectal cancer caused by FOLFOX in early stage, of which LVLGS and LVGAS are powerful observation indicators.

目的 运用三维斑点追踪成像(3D-STE)技术,检测系统性红斑狼疮(SLE)患者的左室收缩期峰值应变(S)和应变率(Sr)及舒张指数,探讨其评价 SLE 患者左室整体收缩及舒张功能的临床应用价值。方法 选择 30 例 SLE 患者(SLE 组)和 30 例正常人(对照组),分别对其进行二维超声心动图和3D-STI检查,获取心尖四腔、两腔、三腔及心尖长轴二维超声及M型超声切面,测量左心室舒张末期内径(LVEDd)、左心室收缩末期内径(LVEDs)、室间隔舒张末期厚度(IVSd)、室间隔收缩末期厚度(IVSs)、左心室后壁舒张末期厚度(LVPWd)、左心室后壁收缩末期厚度(LVPWs)、左心室射血分数(LVEF)、左心室缩短分数(LVFS)、每搏输出量(SV)、左室舒张末期容积(EDV)、收缩末期容积(ESV)、心输出量(CO)、球形指数(SPI)、左室舒张末期质量(LV EDmass)、左室收缩末期质量(LV ESmass)。应用3D-STI行心肌运动分析, 测量左心室整体纵向、圆周、径向及面积收缩期峰值应变(GLS、GCS、GRS、GAS),经胸采集四维全容积图像,应用公式计算各方向相应的舒张期前1/3点时的应变显像舒张指数(SI-DI),公式为(SI-DI=(A-B)/A×100%)。应用统计学分析上述指标在各组间的差异性及其之间的相关性。结果 SLE 组超声心动图的测量数值(LVEF、 LVFS、SV、EDV、CO、LV EDmass、LV ESmass)较对照组降低,差异有统计学意义(P＜0.05),(LVEDd、LVEDs、IVSd、IVSs、LVPWd、LVPWs、ESV、SPI) 与对照组比较, 差异亦均无统计学意义(P＞0.05)。SLE组左心室 GLS、GCS、GRS、GAS均较对照组减低, 差异均有统计学意义(P<0.05)。GAS诊断SLE的敏感度为93.3%,高于GLS(80%)、GCS(66.7%)、GRS(86.7%),GCS诊断SLE的特异度为(93.3%),高于GLS(86.7%)、GAS(86.7%)和GRS(73.3%);应用公式计算得出,SLE组左心室L-SI-DI、C-SI-DI、R-SI-DI 及A-SI-DI均低于正常对照组,差异均有统计学意义(P<0.05);ROC 曲线显示C-SI-DI敏感度(93.3%)及L-SI-DI敏感度(86.7%)高于R-SI-DI(80.0%)、A-SI-DI(80.0%);A-SI-DI特异度(93.3%)及R-SI-DI特异度(93.3%)高于L-SI-DI(73.3%)、C-SI-DI(73.3%)。结论 SLE 患者左室总体收缩及舒张功能减低,4D-STI超声斑点追踪技术可早期检测 SLE 患者左心室收缩及舒张功能的异常。

Objective To detect left ventricular systolic peak strain(S), strain rate(Sr) and diastolic index in patients with systemic lupus erythematosus(SLE) by three-dimensional speckle tracking imaging(3D-STE), and to evaluate the left ventricular total in SLE patients and clinical application value of systolic and diastolic function. Methods Thirty patients with SLE(SLE group) and 30 normal controls(control group) were enrolled. Two-dimensional echocardiography and 4D-STI were performed to obtain sections of apical four-chamber, two-chamber, three-chamber and apical long axis of ultrasound and m-mode ultrasound. To measure left ventricular end-diastolic diameter(LVEDd), left ventricular end-systolic diameter(LVEDs), ventricular septal end-diastolic thickness(IVSd), ventricular septal end-systolic thickness(IVSs), left ventricular posterior wall diastolic end-stage thickness(LVPWd), left ventricular posterior wall end-systolic thickness(LVPWs), left ventricular ejection fraction(LVEF), left ventricular shortening fraction(LVFS), stroke volume(SV), left ventricular end-diastolic volume(EDV), end-systolic volume(ESV), cardiac output(CO), spherical index(SPI), left ventricular end-diastolic mass(LV EDmass), left ventricular end-systolic mass(LV ESmass). 4D-STI myocardial motion analysis, the total longitudinal, circumferential, and radial and area systolic peak strains(GLS, GCS, GRS, GAS) of the left ventricle were measured, and the four-dimensional full-volume images were collected through the thoracic, and the formula was used to calculate the first 1/3 of the diastolic phase in each direction. The formula of strain imaging diastolic index(SI-DI) is(SI-DI=(AB)/A×100%). Statistical analysis was used to analyze the differences between the above indicators and the correlation between the groups. Results The measured values of two-dimensional echocardiography(LVEF, LVFS, SV, EDV, CO, LV EDmass, LV ESmass) in the SLE group were lower than those in the control group, and the difference was statistically significant(P＜0.05). In LVEDd, LVEDs, IVSd, IVSs, LVPWd, LVPWs, SPI, there were no significant differences compared with that of control group(P＞0.05). The left ventricular GLS, GCS, GRS, and GAS in the SLE group were lower than those in the control group. The differences were statistically significant(P<0.05). The sensitivity of GAS in the diagnosis of SLE was 93.3%, higher than GLS(80%), GCS(66.7%), and GRS(86.7%). The specificity of GCS for the diagnosis of SLE was(93.3%), higher than GLS(86.7%), GAS(86.7%) and GRS(73.3%). The left ventricle L-SI-DI, C-SI-DI, in the SLE group was calculated by the formula. R-SI-DI and A-SI-DI were lower than the normal control group, the difference was statistically significant(P<0.05);the ROC curve showed C-SI-DI sensitivity(93.3%) and L-SI-DI sensitivity(86.7%) was higher than R-SI-DI(80.0%), A-SI-DI(80.0%);A-SI-DI specificity(93.3%) and R-SI-DI specificity(93.3%) was higher than L-SI-DI(73.3%) and C-SI-DI(73.3%). Conclusion Total left ventricular systolic and diastolic function in patients with SLE are reduced. 4D-STI ultrasound speckle tracking technique can detect left ventricular systolic and diastolic dysfunction in patients with SLE.

目的 探讨红细胞分布宽度(RDW)与稳定性冠心病的冠脉病变严重程度的关系,评价RDW对稳定性冠心病的预测价值。方法 收集我院2016年11月—2018年11月期间因胸痛住院的患者330例,根据冠脉造影确诊稳定性冠心病组200例,除外冠心病130例为对照组。比较2组RDW水平的差异,分析RDW与冠脉病变严重程度(Gensini评分)的相关性及稳定性冠心病的独立危险因素。结果 稳定性冠心病组RDW水平高于对照组(P<0.05),稳定性冠心病组RDW与 Gensini评分之间存在正相关(r=0.217,P=0.002);多因素logistic回归分析显示RDW(OR=2.950,95%CI: 1.986~4.381,P<0.001)是稳定性冠心病的独立危险因子。结论 RDW与稳定性冠心病的冠脉病变严重程度呈正相关,RDW是稳定性冠心病的独立危险因素,为稳定性冠心病的诊断提供一定预测价值。

Objective To investigate the relationship between the distribution width of red blood cells (RDW) and the severity of coronary artery disease in stable coronary artery disease(SCAD), and to evaluate the predictive value of RDW for SCAD. Methods Patients who were hospitalized for chest pain from November 2016 to November 2018 were enrolled (n=330). According to coronary angiography,200 patients were divided into SCAD group (n=200),except for the SCAD group, the remaining 130 cases were the control group(n=130). The differences of RDW levels between the two groups were compared, and the correlation between RDW and severity of coronary artery disease (Gensini score) and independent risk factors for SCAD were analyzed. Results The RDW level in the SCAD group was higher than that in the control group (P<0.05). There was a positive correlation between the RDW and Gensini scores in the SCAD group (r=0.217,P=0.002). Multivariate logistic regression analysis showed RDW (OR=2.950, 95% CI: 1.986~4.381, P<0.001) is an independent risk factor for SCAD. Conclusion RDW is positively correlated with the severity of coronary artery disease in SCAD. RDW is independent risk factor of SCAD and provides predictive value for the diagnosis of SCAD.