Evolution of human cardiac myocyte dimension during prolonged mechanical support.
J Thorac Cardiovasc Surg
; 101(2): 256-9, 1991 Feb.
Article
em En
| MEDLINE
| ID: mdl-1992235
In animal models using left ventricular assist systems over long time periods, myocardial cellular atrophy has been reported, raising concern that prolonged clinical use of such systems might lead to deterioration in left ventricular function. At the University of Pittsburgh, long-term clinical use of the Novacor (Baxter Healthcare Corp., Novacor Div., Oakland, Calif.) left ventricular support system for patients awaiting heart transplants has allowed study of the effects of long-term mechanical support on human subjects. This study determined that cardiac myocyte dimension is initially greater in patients with end-stage cardiac disease who require support rather than in patients with the same disease who do not require such support. Although myocyte dimension does decrease within a few days of the inception of support, this decrease merely brings cell size closer to the values usual in patients with chronic end-stage cardiac disease, and no further shrinkage is observed. Thus the Novacor left ventricular assist system does not appear associated with left ventricular atrophy, and its long-term use may not be detrimental to left ventricular function.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Coração Auxiliar
/
Miocárdio
Tipo de estudo:
Prognostic_studies
Limite:
Humans
/
Middle aged
Idioma:
En
Revista:
J Thorac Cardiovasc Surg
Ano de publicação:
1991
Tipo de documento:
Article
País de publicação:
Estados Unidos