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目的:应用应变率成像(SRI)技术评价冠心病患者冠状动脉支架置入术前、后的左心房功能的变化。方法:分别于冠状动脉支架置入术前、术后1周和术后1月应用SRI技术对28例冠心病患者左心房功能进行定量评价。结果:与术前比较,术后1周左心房收缩期前容积(LAVp)、最大左心房容积(LAVmax)、右心房被动排空分数(LAVmin)、最小左心房容积(LAPEF)、左心房射血力(AEF)及左室射血分数(LVEF)变化差异无统计学意义(P>0.05);术后1月,LAVp、LAVmax、LAVmin和AEF减小,LAPEF和LVEF增加,差异均有统计学意义(P<0.05)。与术前比较,术后1周左心房SRs、SRe和SRa差异无统计学意义(P>0.05);术后1月SRs和SRe升高,SRa降低,差异均有统计学意义(P<0.05)。结论:SRI可定量评价左心房功能,动态观察冠状动脉支架置入术前、后左心房功能的变化。
Objective: To evaluate the change of left atrial function before and after coronary stent implantation in patients with coronary heart disease by using strain rate imaging (SRI) technique. Methods: The left atrial function of 28 patients with coronary heart disease was evaluated by SRI technique before coronary stent implantation, 1 week after surgery and 1 month after surgery. Results: Compared with the preoperative values, the values of LAVp, LAVmax, LAVmin, LAPEF, There was no significant difference in AEF and LVEF between the two groups (P> 0.05). At 1 month after operation, LAVp, LAVmax, LAVmin and AEF decreased, LAPEF and LVEF increased Significance (P <0.05). There was no significant difference in SRs, SRe and SRa between the two groups at 1 week after operation (P> 0.05), but at 1 month after operation, SRs and SRe were significantly increased while SRa was lower (P <0.05) ). Conclusion: SRI can quantitatively evaluate left atrial function and dynamically observe the changes of left atrial function before and after coronary stent implantation.