Mitral valve replacement and remodeling of the left ventricle in dilated cardiomyopathy with mitral regurgitation. Initial results
Arq. bras. cardiol
; 78(2): 224-229, Feb. 2002. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-303907
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVE:
This study evaluated the effects of a new method of mitral valve replacement on left ventricular (LV) remodeling and heart failure functional class.METHODS:
Eight patients (6 men) with severe mitral regurgitation from end-stage dilated cardiomyopathy underwent surgery. Five patients were in functional class (FC) IV, 2 were in FC III and 1 was in FC III/IV. Age ranged from 33 to 63 years. Both the anterior and posterior leaflets of the mitral valve were divided into hemileaflets. The resultant 4 pedicles were displaced under traction toward the left atrium and anchored between the mitral annulus and an implanted valvular prosthesis. The beating heart facilitated ideal chordae tendineae positioning.RESULTS:
All patients survived and were discharged from the hospital. After a mean follow-up period of 6.5 months (1-12 m), 5 patients were in FC I; 2 in FC I/II; and 1 in FC II. The preoperative ejection fraction ranged from 19 percent to 30 percent (mean 25.7±3.4 percent), and the postoperative ejection fraction ranged from 21 percent to 40 percent (mean 31.1± 5.8 percent). Doppler echocardiography showed evidence of LV remodeling in 4 patients, including lateral wall changes and a tendency of the LV cavity to return to its elliptical shape.CONCLUSION:
This technique of mitral valve replacement, involving new positioning of the chordae tendineae, allowed LV remodeling and improvement in FC during this brief follow-up period
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Cardiomiopatia Dilatada
/
Implante de Prótese de Valva Cardíaca
/
Remodelação Ventricular
/
Valva Mitral
/
Insuficiência da Valva Mitral
Tipo de estudo:
Estudo observacional
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Arq. bras. cardiol
Assunto da revista:
Cardiologia
Ano de publicação:
2002
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade de Säo Paulo/BR