Echocardiographic Evaluation Of The Effects Of Different Atrial Radiofrequency Ablation On Left Atrial Function

Objective To evaluate the left atrial function of patients with atrial fibrillation(AF)by echocardiography,and to explore its clinical application value.To explore the effect of different ablation methods on left atrial function after radiofrequency ablation of atrial fibrillation,and to evaluate which radiofrequency ablation procedure is more beneficial to the recovery of left atrial function.Methods 50 patients with atrial fibrillation and 30 healthy volunteers were selected.Basic information collection was performed on the subjects,including gender,age,height,weight,history of hypertension,history of diabetes;Measure and evaluate parameters related to left atrial function with conventional echocardiography,these parameters include left atrial anterior diameter(LAD),left atrial volume index(LAVI),end-diastolic left ventricular anteroposterior diameter(LVEDD),E/e,left atrial appendage size,and left atrial strain rate(SR).Logistic regression analysis of relevant parameters to analyze Which parameters are risk factors for atrial fibrillation.Patients with surgical pointers,the inclusion criteria and atrial fibrillation radiofrequency ablation were divided into a simple pulmonary vein vestibular annular ablation group(n=20)and a combined ablation group(n=18).The patients were followed up for 3 months after operation.Paired t-test was performed on the preoperative and postoperative indexes to evaluate the changes of left atrial function before and after operation.Results(1)The age of patients with AF,the history of hypertension and the history of diabetes were significantly different from those of the normal control group(p<0.05),the age of AF patients(64.42±12.29 vs 39.87±13.68),and the incidence of hypertension(The incidence of 54% vs 30%)and diabetes(51% vs 17%)were higher than the normal control group.(2)Inflammatory-related indicators of neutrophil/lymphocyte(NLR)were statistically significant,p < 0.05.(3)In this study,Logistic regression analysis of LAD(OR=0.78,95% CI 0.70-0.88),LAA maximum opening diameter(OR=1.10,95% CI 1.01-1.21)and LA strain rate(OR=1.31,95% CI 1.14-1.51)can be used as a risk factor for atrial fibrillation.(4)In patients undergoing radiofrequency ablation of atrial fibrillation,there was no statistically significant difference between preoperative and postoperative,LAD(36.52±5.89 vs 34.10±5.08),LAA maximum opening diameter(27.36±7.99 vs 25.63±7.63),SR(2.90±0.40 vs 3.16±0.30),LAEF(0.47±0.05 vs 0.50±0.05)Statistically significant,p < 0.05.(5)Preoperative and postoperative comparisons in the combined ablation group,LAD(39.36±7.61 vs 35.21±6.20),E/e(12.10±3.50 vs 10.26±1.88),LAA maximum opening diameter(25.74±3.54 vs 23.89±4.40),SR(3.10±0.88 vs 3.43±0.38),LAEF(0.49±0.03 vs 0.54±0.03)were statistically significant before and after surgery,p<0.05.(6)(6)There was a statistically significant relationship between SR and LAEF between the two surgical procedures.SR(3.43±0.38)and LAEF(LAEF)(0.53±0.03)were increased in the combined ablation group compared with SR(3.16±0.30)and LAEF(0.50±0.05)in the simple ablation group;postoperative systolic blood pressure in the simple ablation group(129.52±10.36)was reduced compared with the combined ablation group(136.68±10.98).Conclusion According to the results of this study,LAD,LAA maximum opening diameter and LA strain rate can be used as risk factors for evaluating atrial fibrillation.Radiofrequency ablation surgery has a positive effect on the recovery of left atrial function.In the short-term follow-up,the combined ablation group may be more conducive to the recovery of left atrial function;the postoperative systolic blood pressure in the simple ablation group was lower than that in the combined ablation group.