Evaluation of Left Ventricular Wall Motion after Mitral Valve Replacement with Preservation of Both Anterior and Posterior or Only Posterior Chordae Tendineae.
10.4326/jjcvs.24.320
- VernacularTitle:僧帽弁置換術における両尖けん索，後尖けん索温存術式の左室局所壁運動の検討
- Author:
Masafumi Natsuaki
;
Tsuyoshi Itoh
;
Shinji Tomita
;
Masaru Yoshikai
;
Koujirou Furukawa
;
Kazuhisa Rikitake
;
Yoshihiro Nakayama
;
Hisao Suda
- Publication Type:Journal Article
- From:Japanese Journal of Cardiovascular Surgery
1995;24(5):320-325
- CountryJapan
- Language:Japanese
-
Abstract:
Left ventricular wall motion was evaluated after mitral valve replacement (MVR). MVR for mitral regurgitation (MR) was performed with preservation of both anterior and posterior chordae tendineae (Group I, n=12) or posterior chordae tendineae (Group II, n=9). MVR for mitral stenosis was performed with the preservation of the posterior chordae alone (MS Group, n=12). Postoperative regional wall motion was analyzed from the shortening fraction (SF) of the centerline method in 5 of antero-basal (AB), anterolateral (AL), apical (AP), diaphragmatic (DP) and posterobasal (PB) regions. The percentage of post-operative SF for preoperative value (%SF) was compared between Group I and Group II. The value of %SF improved much more in Group I than in Group II at the AL and AP regions. %EF was more significantly increased in Group I than in Group II, although postoperative ESVI and EDVI decreased in both groups. In the MS Group, EF, ESVI and EDVI did not change after surgery. The regional wall motion improved except in the calcified PB region. These results demonstrated that the preservation of both anterior and posterior chordae tendineae for MR was a useful procedure to improve postoperative LV regional wall motion. The preservation of posterior chordae for MS was sufficient to improve the regional wall motion except in the calcified submitral region.
