The three dimensional annulus configuration changes after application of two dimensional artificial mitral annuloplasty
10.3760/cma.j.issn.1001-4497.2015.05.005
- VernacularTitle:二尖瓣成形术中使用二维平面人工环影响瓣环生理性空间构型
- Author:
Haibo ZHANG
;
Xu MENG
;
Yong GUO
;
Yihua HE
;
Jie HAN
;
Yan LI
- Publication Type:Journal Article
- Keywords:
Mitral repair;
Three dimensional configuration;
Artificial annulus
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2015;31(5):270-273
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the mitral annular three dimensional configuration changes after application of two dimensional mitral annuloplasty.Methods Includes criteria:serious mitral prolapse without other cardiac disorders,with age ranged from 18 to 60 years old.Three dimensional echocardiography was performed before the surgery in the operation room.The mitral annular three dimensional configuration,the mitral prolapse and regurgitation grades were examined.And same procedure was done after the mitral repair.All the measure results were expressed as x ± s and the statistical analysis was performed using SPSS 19.0 software.Results Totally 42 cases were enrolled,including 28 posterior prolapse and 14 anterior prolapse cases.All the mitral repair got satisfied none or mild regurgitation.The mitral annulus moved consistently as saddle shape during the whole cardiac cycle,the lowest annulus part was at the commissure and the highest part was at the anterior and posterior annulus centers.During the systolic phase the non-planer angel between anterior and posterior annuls was bigger than in diastolic phase.The annulus circumference,transverse,longitudinal diameters decreased compared with before the surgery.Preoperative mitral transverse diameter and longitudinal diameter values are almost the equal size,indicating the mitral annulus was in nearly round shape.However the longitudinal/transverse ratio reached 0.88 after surgery which implied the annulus configuration recovery after annuloplasty.After the mitral annuloplasty the annular height decreased from (8.4 ± 0.6) mm to (3.2 ±0.1) mm while the annular height/transverse diameter ratio decreased from 0.24 to 0.15,which may be affected by the application of the two dimensional rigid artificial annulus.Non-planar angle between the anterior and posterior mitral annuls increased from(136 ± 13)degrees to(145 ± 14) degrees after mitral repair.Conclusion The mitral annulus configuration may have planarization changes due 1o the apply of two dimentional artificial annulus.
