Annuloplasty with flexible or rigid ring does not alter left ventricular systolic performance, energetics, or ventricular-arterial coupling in conscious, closed-chest dogs.
J Thorac Cardiovasc Surg
; 105(4): 643-58; discussion 658-9, 1993 Apr.
Article
em En
| MEDLINE
| ID: mdl-8468998
ABSTRACT
Eighteen dogs were randomly chosen to undergo mitral annuloplasty with either a Carpentier-Edwards rigid ring (n = 6 in each group) or a Duran-Medtronic flexible ring or to undergo a sham procedure with an operation, but no ring. Tantalum markers were inserted to measure left ventricular volume and geometry. After 1 and 6 weeks, biplane videofluoroscopic images were obtained during steady-state conditions and during vena caval occlusion. Global and regional systolic function was assessed with load-insensitive indexes. Comparison of all three groups and both times (1 and 6 weeks) showed no significant differences among the three groups in global or regional (basal, equatorial, and apical) left ventricular systolic performance. Furthermore, neither type of annuloplasty ring significantly affected left ventricular pump efficiency, ventricular-arterial coupling ratio, or systolic circumferential contraction and rotation of the basal left ventricular sites.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Próteses Valvulares Cardíacas
/
Função Ventricular Esquerda
/
Valva Mitral
Limite:
Animals
Idioma:
En
Revista:
J Thorac Cardiovasc Surg
Ano de publicação:
1993
Tipo de documento:
Article