Orientation of tilting disc and bileaflet aortic valve substitutes for optimal hemodynamics.
Ann Thorac Surg
; 68(3): 1096-9, 1999 Sep.
Article
em En
| MEDLINE
| ID: mdl-10510028
ABSTRACT
Procedures for implantation of mechanical aortic valves have to consider eccentric flow in the aortic root. We describe how to optimize orientation of tilting disc (Medtronic Hall) and bileaflet (St. Jude Medical) valves. In tilting disc valves, an asymmetric design faces an asymmetric flow. Hemodynamic performance of this valve type, regarding turbulence and pressure gradients, is close to normal physiology and superior to the bileaflet valve design. This difference is more pronounced the smaller the valve size.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Valva Aórtica
/
Próteses Valvulares Cardíacas
/
Implante de Prótese de Valva Cardíaca
/
Hemodinâmica
Tipo de estudo:
Clinical_trials
/
Observational_studies
Limite:
Humans
Idioma:
En
Revista:
Ann Thorac Surg
Ano de publicação:
1999
Tipo de documento:
Article