Outcome analysis of functional mitral regurgitation after transcatheter aortic valve replacement in patients with severe bicuspid aortic stenosis
10.3969/j.issn.1672-8467.2024.01.005
- VernacularTitle:功能性二尖瓣反流在二叶式主动脉瓣重度狭窄患者经导管主动脉瓣置换术后的转归分析
- Author:
Da-Wei LIN
1
,
2
;
Zi-Long WENG
;
Feng ZHANG
;
Wen-Zhi PAN
;
Da-Xin ZHOU
Author Information
1. 复旦大学附属中山医院心内科 上海 200032
2. 上海市心血管病研究所 上海 200032
- Keywords:
bicuspid aortic valve(BAV);
transcatheter aortic valve replacement(TAVR);
functional mitral regurgitation(FMR);
aortic valve stenosis(AS)
- From:
Fudan University Journal of Medical Sciences
2024;51(1):34-40
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the relationship between the types of bicuspid aortic valves(BAV)and the outcome of functional mitral regurgitation(FMR)and the affecting factors of FMR.Methods From Jun 2018 to Sep 2022,patients with severe BAV aortic valve stenosis(AS)complicated with FMR underwent post transcatheter aortic valve replacement(TAVR)in Zhongshan Hospital,Fudan University were retrospectively analyzed.The baseline information and imaging data of different BAV patients were collected.Logistic regression was used to analyze the factors affecting the outcome of FMR(improvement and non-improvement).Result A total of 100 patients with TAVR were included,including 49 patients with type 0 of BAV and 51 patients with type 1 of BAV.Compared with patients of type 1,patients of type 0 had younger age[(72.78±6.09)y vs.(77.00±8.35)y,P=0.050],lower male ratio(47%vs.73%,P= 0.009)higher BMI[(23.19±2.62)kg/m2 vs.(21.99±3.13)kg/m2,P=0.041],and lower incidence of aortic regurgitation(69%vs.92%,P=0.040).Compared with the non-improvement group,the improvement group had a lower incidence of coronary heart disease(5%vs.18%,P=0.042),higher incidence of pulmonary hypertension(20%vs.2%,P=0.007),larger left ventricular diastolic diameter[(51.98±6.74)mm vs.(48.04±7.72)mm,P=0.009]and higher maximum flow velocity[(4.86±0.95)cm/s vs.(4.47±0.75)cm/s,P= 0.023]of the aortic valve.The results of Logistic regression analysis showed that preoperative pulmonary hypertension,left ventricular end-diastolic diameter and maximum valvular flow velocity of BAV patients were the potential affecting factors of FMR improvement after TAVR.Conclusion No significant difference was found in FMR improvement between BAV patients of type 0 and type 1 after TAVR.For BAV patients with AS,preoperative pulmonary hypertension,larger left ventricular end-diastolic diameter,and faster aortic valve flow velocity were associated with higher FMR improvement rate.
