Analysis of Left Atrial Remodeling in AMI Patients After PCI Based on Ultrasound and Spot Tracking Technology
Objective To explore left atrial remodeling analysis in patients with acute myocardial infarction(AMI)after per-cutaneous coronary intervention(PCI)based on ultrasound and spot tracking technology.Methods In all,111 AMI patients trea-ted in Nantong University Affiliated Hospital and Second Affiliated Hospital from January 2022 to February 2024 were selected as the observation group,while 53 healthy individuals were selected as the control group.Ultrasound spot tracking imaging was performed,the differences between the two groups were analyzed,as well as the differences before and after PCI surgery in the observation group.Results The left ventricular end diastolic diameter(LADd),two-dimensional maximum left atrial volume(2D-LAVmax),two-dimensional minimum left atrial volume(2D-LAVmin),two-dimensional left atrial volume index(2D-LAVI)in the observation group were(46.45±6.34)mm,(115.32±48.16)mL,(76.32±39.39)mL,(64.04±26.36),which were significantly higher than that in control group(P＜0.05).The two-dimensional left atrial ejection fraction(2D-LAEF)and left atrial expansion index(LAEI)were(35.09±7.52)％and(0.49±0.16),respectively,which was significantly lower than that in control group(P＜0.05).The mean negative peak strain(meanSs)of the left atrium during systole,the mean positive peak strain(meanSr)of the left atrium during diastole,the mean negative peak strain rate of the left atrium during late diastole,and the mean positive peak strain rate of the left atrium during systole in the observation group were(-18.28±2.23),(12.82±4.43),(-2.82±0.54),and(1.52±0.49),respectively,which were significantly lower than those in the control group(P＜0.05).The mean negative peak strain rate of the left atrium in early diastole was(-1.14±0.36),which was significantly higher than the control group(P＜0.05).2D-LAVmax was negatively correlated with mean SRs(r=-0.606,P＜0.05).2D-LAEF was positively correlated with meanSRa(r=0.549,P＜0.05).The observation group showed significant improvement in left atrial LADd、2D-LAVmax,2D-LAVmin,2D-LAEF,2D-LAVI,2D-LAEI,meanSs,meanSr,meanSRa,meanSRs and meanSRe at 1 week and 1 month after PCI compared to before surgery(P＜0.05).Conclusion Ultrasound speckle tracking technology can effectively evaluate left atrial remodeling in AMI patients after PCI.
万方数据
维普
