| 摘要: |
| 目的 探讨左心室心肌做功参数评价完全性左束支传导阻滞（CLBBB）患者左心室功能中的应用价值。
方法 选取56例完全性左束支传导阻滞患者，按照射血分数是否减低分为射血分数正常组（n=30）及射血分数减低组（n=26），以40例健康成年志愿者作为对照组。对比各组常规超声心动图参数，纵向峰值应变离散程度（PSD）、整体纵向应变（GLS）及左室心肌做功（LVMW）参数，包括整体做功效率（GWE）、整体做功指数（GWI）、整体有用功（GCW）、及整体无用功（GWW）。
结果 EFpreserved 组、EFlow 组分别与对照组PSD、GLS、GWE、GWI、GWW差异有统计学意义（P＜0.05）； EFpreserved 组与EFlow 组PSD、GLS、GWE、GWI、GWW差异有统计学意义（P＜0.05）； EFpreserved组与对照组GCW差异无统计学意义（P＞0.05）； EFlow 组分别与EFpreserved 组和对照组GCW差异有统计学意义（P＜0.05）。PSD、GLS均与EF、E、e，室间隔、e，侧壁呈负相关（P＜0.01），PSD与EDV、ESV呈正相关（P＜0.05）；GLS与EDV、ESV呈正相关（P＜0.01），与A呈正相关（P＜0.05）；GWE、GWI、GCW均与EF、E、e，室间隔、e，侧壁呈正相关（P＜0.01），GWE与EDV、ESV呈负相关（P＜0.01），与A呈负相关（P=0.02）；GWI、GCW与EDV、ESV呈负相关（P＜0.01）；GWW与EF、E、A、e，室间隔、e，侧壁呈负相关（P＜0.01），与EDV、ESV呈正相关（P＜0.01）
结论 LVMW参数对定量评价CLBBB患者左心室功能有一定潜在临床价值。 |
| 关键词: 超声心动描记技术 心肌做功 完全性左束支传导阻滞 心室功能，左 |
| DOI： |
| 投稿时间：2024-05-07修订日期：2024-06-21 |
| 基金项目:云南省教育厅科学研究基金项目 |
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| Myocardial work parameters for evaluating left ventricular function in patients with complete left bundle branch block |
| Song xiaolei,Zhao li,Qi yi,Wang qinghui,Su xuan,Ding yunchuan |
| (Yanan Hospital Affiliated To Kunming Medical University) |
| Abstract: |
| Objective To evaluate the value of left ventricular myocardial work parameters in evaluating left ventricular function in patients with complete left bundle branch block (CLBBB).
Methods 56 patients with CLBBB were selected. According to the decrease of ejection fraction, the patients were divided into two groups: normal ejection fraction group (n=30) and low ejection fraction group (n=26)， while 40 healthy adult volunteers were recruited as control group. The parameters of routine echocardiography, longitudinal peak strain dispersion (PSD), global longitudinal strain (GLS) and left ventricular myocardial work (LVMW) were compared in each group. ，including global work efficiency (GWE), global work index (GWI), global useful work (GCW) and global useless work (GWW).
Results There were significant differences in PSD, GLS, GWE, GWI and GWW between EFpreserved group, EFlow group and control group(P＜0.05). There were significant differences in PSD, GLS, GWE, GWI and GWW between EFpreserved group and EFlow group(P＜0.05). There was no significant difference in GCW between EFpreserved group and control group(P＞0.05). There was significant difference in GCW between EFlow group and EFpreserved group and control group (P<0.05). PSD and GLS were negatively correlated with EF, E, e,septal, e,lateral（P＜0.01）. PSD was positively correlated with EDV and ESV(P < 0.05). GLS was positively correlated with EDV、ESV(P＜0.01) and A（P<0.05）.GWE, GWI and GCW were positively correlated with EF, E, e,septal, e,lateral. GWE was negatively correlated with EDV、ESV（P＜0.01）,and A (P=0.02). GWI and GCW were negatively correlated with EDV and ESV（P＜0.01）. GWW was negatively correlated with EF, E, A, e,septal, e,lateral (P＜0.01), but positively correlated with EDV and ESV(P＜0.01).
Conclusion LVMW parameters have certain potential clinical value in quantitative evaluation of left ventricular function in patients with CLBBB. |
| Key words: Echocardiography Myocardial work Complete left bundle branch block Ventricular function, left |
