Long-term effect after mechanical valve replacement in adult patients with small aortic root
10.3760/cma.j.issn.1673-4904.2011.32.010
- VernacularTitle:成年人小主动脉瓣环者机械瓣膜置换术后远期疗效
- Author:
Chunxi ZHANG
;
Zhaoliu LUO
;
Dade HUANG
;
Daihong WU
- Publication Type:Journal Article
- Keywords:
Heart valve prosthesis implantation;
Small aortic root;
Left ventricular
- From:
Chinese Journal of Postgraduates of Medicine
2011;34(32):25-27
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the long-term effect after mechanical valve replacement in adult patients with small aortic root,and guide clinical practice.Methods From July 2003 to February 2005,36adult patients with small amtic root(diameter≤ 19 mm)received mechanical valve replacement,23 mm CarboMedics valve were implanted in 14 patients by using of Manougnian annulus enlargiW; technique(CM group),19 mm CarboMedics Top Hat Supra-Annular Aortic valve were implanted in 22 patients(CMSA group).All of the patients were examined for cardiac functions(CF),left ventricular end-diastolic diameter (LVDD),interventricular septal thickness(IVST),left ventricular posterior wall thickness(LVPWT),pressure gradients across aortic valve(PGav),and left ventricular fractional shortening(LVFS),calculating left ventricular ejection fraction(LVEF)before operation and 6 years after operation.Twenty healthy adults were as control group.Results Compared to the preoperation,there was no statistical difference in CMSA group in IVST[(10.37 ± 2.06)mm vs.(11.03 ± 2.45)mm]and LVPWT[(10.53 ± 2.18)mm vs.(11.24 ±degrees(P＜ 0.01 or ＜ 0.05).PGav in CM group was lower significantly than that in CMSA group after 6 years [(9.24 ±5.93)mm Hg(1 mm Hg =0.133 kPa)vs.(24.30 ± 12.50)mm Hg],the difference was statistically significant(P ＜ 0.05).The indicators in CM group were not statistically significant compared to control group,while CMSA group in IVST,LVPWT,PGav was significant difference(P ＜0.05).Conclusions The long-term effect after mechanical valve replacement is satisfied in adult patients with small aortic root,especially in left ventricular function.Line valve ring augmentation larger diameter valves implanted will help reverse the left vehicular morphology.
