The Value of Echocardiography in Assessing Hemodynamic Changes after Valve Replacement in Patients with Aortic Stenosis
Obejective:To investigate the value of echocardiography in the assessment of hemody-namic changes after aortic valve replacement(AVR)in patients with aortic stenosis(AS).Methods:A ret-rospective analysis was conducted on the clinical data of 45 patients with AS who underwent AVR in our hospital from March 2021 to March 2022.The differences in the changes of electrocardiographic and echocardiographic parameters,including left ventricular ejection fraction(LVEF),left ventricular end-diastolic internal diameter(LVEDD),left ventricular posterior wall thickness(LVPWT),interventricular septal thickness(IVST),aortic root internal diameter(AO),S-wave amplitude in leads V1-V3(S1,S2,S3),R-wave amplitude in leads V5-V6(R5,R6),mean QRS wave duration,mean QT interval and mean QTc in all leads.Results:LVEF decreased at 3 days postoperatively(P＜0.05),but increased at 1 year postoperatively compared to 3 days postoperatively(P＜0.05),there was no statistical difference compared to 1 day preoperatively(P＞0.05).LVEDD decreased at 3 days postoperatively and late compared to 1 day preoperatively(P＜0.05).LVPWT,IVST,AO,QRSd,QT and QTc were not statistically different when compared 1 day preoperatively,3 days postoperatively,and 1 year postoperatively(P＞0.05).S1,S2,and S3 all decreased 3 days postoperatively and 1 year postoperatively(P＜0.05),but were not statistically dif-ferent between 3 days postoperatively and 1 year postoperatively(P＞0.05).R5 and R6 were lower at 1 year postoperatively compared to 1 day preoperatively and 3 days postoperatively(P＜0.05),but there was no statistical difference between R5 and R6 at 1 day preoperatively compared to 3 days postoperatively(P＞0.05).The log-rank linear regression revealed a positive correlation between AVR preoperative 1 day and postoperative 3 days and postoperative 1 year ECG index S2 and LVEDD(r=0.481,P＜0.05),with more significant correlations in the postoperative 3 days(r=0.545,P＜0.05)and postoperative 1 year(r=0.560,P＜0.05),and the greater the postoperative LVEDD,the higher the S2.The smaller the LVEDD,the lower the S2.The ECG index S2 was negatively correlated with LVEF at 3 days postoperatively and 1 year postoperatively(r=-0.374,P＜0.05).Conclusion:Echocardiography can provide accurate assessment of he-modynamic changes after 1 day before and after AVR surgery in patients with AS,and is a good guide in clinical practice.
Aortic stenosisEchocardiographyAortic valve replacementHaemodynamicsLeft Ventricular function
万方数据
维普
