Cardiac remodeling in patients with atrial fibrillation reversing bradycardia-induced cardiomyopathy:A case report  

作　　者：De-Kui Gao Xiang-Lin Ye Zhen Duan Hong-Yang Zhang Tao Xiong Zheng-Hong Li Hai-Feng Pei 

机构地区：[1]Department of Cardiology,Jiangyou Second People's Hospital,Jiangyou 621701,Sichuan Province,China [2]Department of Cardiology,The General Hospital of Western Theater Command,Chengdu 610083,Sichuan Province,China [3]Department of Clinical Medicine,Southwest Medical University,Luzhou 646000,Sichuan Province,China [4]Department of Special Inspection,Jiangyou Second People's Hospital,Jiangyou 621701,Sichuan Province,China

出　　处：《World Journal of Clinical Cases》2024年第7期1339-1345,共7页世界临床病例杂志

基　　金：Supported by National Natural Science Foundation of China,No.81970241;Tianfu Qingcheng Project-Tianfu Science and Technology Elite,No.1358.

摘　　要：BACKGROUND Bradycardia-induced cardiomyopathy(BIC),which is a disease resulting from bradycardia,is characterized by cardiac chamber enlargement and diminished cardiac function.The correction of bradycardia can allow for significant improvements in both cardiac function and structure;however,this disease has been infrequently documented.In this case,we conducted a longitudinal followup of a patient who had been enduring BIC for more than 40 years to heighten awareness and prompt timely diagnosis and rational intervention.CASE SUMMARY A woman who presented with postactivity fatigue and dyspnea was diagnosed with bradycardia at the age of 7.Since she had no obvious symptoms,she did not receive any treatment to improve her bradycardia during the 42-year follow-up,except for the implantation of a temporary pacemaker during labor induction surgery.As time progressed,the patient's heart gradually expanded due to her low ventricular rate,and she was diagnosed with BIC.In 2014,the patient developed atrial fibrillation,her ventricular rate gradually increased,and her heart shape gradually returned to normal.This report describes the cardiac morphological changes caused by the heart rate changes in BIC patients older than 40 years,introduces another possible outcome of BIC,and emphasizes the importance of early intervention in treating BIC.CONCLUSION BIC can induce atrial fibrillation,causing an increased ventricular rate and leading to positive cardiac remodeling.

关 键 词：Bradycardia cardiomyopathy Heart rate Atrial fibrillation Cardiac dilatation Case report 

分 类 号：R542.2[医药卫生—心血管疾病]