Surgical treatment of left ventricular outflow tract obstruction due to accessory mitral valve: case report and review of literature
- VernacularTitle:手术治疗二尖瓣附瓣致左室流出道狭窄2例报告
- Author:
Shengli JIANG
;
Changqing GAO
;
Bojun LI
- Publication Type:Journal Article
- Keywords:
heart valve diseases;
accessory mitral valve;
ventricular outflow obstruction
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the clinical characteristics and surgical treatment of left ventricular outflow tract obstruction (LVOTO) caused by congenital accessory mitral valve (AMV) tissue. Methods Two cases were treated in our department. Pre-operatively, case 1 was diagnosed as congenital heart disease with severe LVOTO and anterior mitral valve cleft; case 2 was diagnosed as congenital atrial septal defect combined with AMV and mild LVOTO as well as mild mitral valve regurgitation. Both patients were operated on under CPB. In case 1, LVOTO was caused by AMV which belonged to Type I (fixed type). In case 2, the AMV was type II (mobile type). Results Both AMV tissues were resected through atrial septum, and combined cardiac disorders were repaired simultaneously. The operations were successful and the patients were discharged with good results. Echocardiography revealed that the LVOTO almost disappeared. Conclusions LVOTO caused by AMV is a rare congenital heart disorder. AMV may be removed with acceptable postoperative outcome. Prophylactic removal of AMV tissue should not be attempted in patients with no or mild LVOTO and no other associated heart defects. These patients should be followed and observed periodically by Doppler echocardiography to identify any progression in LVOTO.
