Application Value Of Implantable ECG Monitor In Evaluating The Efficacy Of Atrial Fibrillation After Radiofrequency

Objective(s):To investigate the application value of insertable cardiac monitor(ICM)in evaluating the efficacy of patients with atrial fibrillation after radiofrequency ablationMethods:This study included 24 patients with atrial fibrillation who were admitted to People’s Hospital of Yuxi City between September 2021 and March 2022 and had ICMs implanted after radiofrequency ablation of atrial fibrillation.Patients’ basic information,medical history,cardiac color ultrasound and medication were collected before surgery.Patients were followed up for 24 hours with dynamic electrocardiogram and ICM program control at 3,6,9,and 12 months after surgery.By analyzing the difference between ICM program control information and 24-hour dynamic electrocardiogram results in patients during the follow-up period,as well as the detection of other arrhythmias by ICM,we also discussed the difference between the two detection methods in the detection of asymptomatic and asymptomatic atrial fibrillation,so as to explore the application value of ICM in the postoperative efficacy of atrial fibrillation.Results:1.All 24 patients were successfully implanted with ICM and were followed up for an average of 13±1.2 months.No capsular infection or ICM-related discomfort was found.2.The accuracy of ICM in identifying patients with atrial fibrillation was 98.2%.The burden of atrial fibrillation after radiofrequency ablation of atrial fibrillation by ICM: the median burden of atrial fibrillation within 3 months was 0.1(0.00,5.55),the minimum value was 0%,and the maximum value was 30.8%.From March to June,the median burden of atrial fibrillation was 0(0.00,0.20),the minimum value was 0%,and the maximum value was 19.4%.From June to September,the median burden of atrial fibrillation was 0(0.00,0.10),the minimum value was 0% and the maximum value was 50.9%.The median burden of atrial fibrillation from September to December was 0(0.00,1.83).3.After radiofrequency ablation of atrial fibrillation,the detection rate of ICM for recurrence of atrial fibrillation was higher than that of 24-hour dynamic ECG,with statistical difference(P<0.05);4.There was no significant difference in the recurrence rate of atrial fibrillation in symptomatic patients after radiofrequency ablation compared with 24-hour holter ECG,P > 0.05;5.The recurrence detection rate of ICM in asymptomatic patients after radiofrequency ablation of atrial fibrillation was higher than that of 24-hour holter ECG,with statistical difference(P<0.05);6.After radiofrequency ablation of atrial fibrillation,ICM detected not only the recurrence of atrial fibrillation,but also sinus arrest in 2 cases and paroxysmal supraventricular tachycardia in 1 case.These 3 patients were not captured by holter electrocardiogram.Conclusion:ICM is safe and effective,with a higher rate of recurrence of atrial fibrillation after radiofrequency ablation compared with 24-hour holter ECG,especially in asymptomatic patients.Based on reliable information,the efficacy of atrial fibrillation can be evaluated and targeted treatment interventions can be provided.