Impact of impaired mitral annular motor on atrial functional mitral regurgitation in patients with persistent atrial fibrillation
10.13929/j.issn.1672-8475.2024.08.006
- VernacularTitle:二尖瓣环运动受损对持续性心房颤动患者心房功能性二尖瓣反流的影响
- Author:
Ni ZHANG
1
;
Qian HU
;
Yu ZHOU
;
Qingxiong YUE
Author Information
1. 大连理工大学附属中心医院(大连市中心医院)超声科,辽宁 大连 116033
- Keywords:
atrial fibrillation;
echocardiography,three-dimensional;
mitral valve
- From:
Chinese Journal of Interventional Imaging and Therapy
2024;21(8):468-472
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the impact of impaired mitral annular motor on atrial functional mitral regurgitation(AFMR)in patients with persistent atrial fibrillation(AF).Methods Forty-four persistent AF patients who would undergo radiofrequency ablation(RFA)were prospectively enrolled.Two-dimensional transthoracic echocardiography and real-time three-dimensional transesophageal echocardiography(RT-3D TEE)parameters obtained 1 day before RFA and 3 months after RFA were compared.AFMR was assessed according to effective regurgitant orifice area(EROA),and the change rates of overall annular area(AA)and presystolic AA were evaluated.The difference of EROA before and after RFA was used to describe the improvement degree of AFMR,which was used as the dependent variable,and the related ultrasonic factors 1 day before RFA that affected the improvement degree of AFMR 3 months after RFA were screened.Results Compared with those before RFA,the left atrium global longitudinal strain and left ventricular ejection fraction increased,while the left atrial diameter,left atrial volume,EROA,anteroposterior diameter of valve ring,annular circumference of valve ring,AA,valve leaflet area and non-planar angle decreased,and both the overall AA change rate and presystolic AA change rate increased(all P＜0.05).The change rate of presystolic AA before RFA was an independent impact factor of the improvement degree of AFMR in persistent AF patients 3 months after RFA(P＜0.05).Conclusion Impaired mitral annular motor in persistent AF patients mainly manifested as decreased mitral annular motor function in presystolic period,which impacted the degree of AFMR.
