Survival times in dogs with severe subvalvular aortic stenosis treated with balloon valvuloplasty or atenolol.
J Am Vet Med Assoc
; 227(3): 420-4, 2005 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-16121608
OBJECTIVE: To determine survival times in dogs with severe subvalvular aortic stenosis (SAS) treated by means of balloon valvuloplasty or with atenolol, a beta-adrenoceptor blocking drug. DESIGN: Prospective study. ANIMALS: 38 dogs < 24 months old with severe SAS (peak systolic pressure gradient > or = 80 mm Hg). PROCEDURE: 10 dogs underwent balloon valvuloplasty and were reexamined 6 weeks later to determine the feasibility of the procedure. The remaining 28 dogs were randomly assigned to undergo balloon valvuloplasty (n = 15) or to be treated with atenolol long term (13) and were reexamined annually for 9 years or until the time of death. RESULTS: For the first 10 dogs, mean pressure gradient 6 weeks after balloon valvuloplasty (mean +/- SD, 119 +/- 32.6 mm Hg) was significantly decreased, compared with mean baseline pressure gradient (167 +/- 40.1 mm Hg). Median survival time for dogs that underwent balloon valvuloplasty (55 months) was not significantly different from median survival time for dogs treated with atenolol (56 months). CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that balloon valvuloplasty can result in a significant decrease in the peak systolic pressure gradient in dogs with severe SAS, at least for the short term. No clear benefit in survival times was seen for dogs that underwent balloon valvuloplasty versus dogs that were treated with atenolol.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Estenosis Aórtica Subvalvular
/
Atenolol
/
Cateterismo
/
Antagonistas Adrenérgicos beta
/
Enfermedades de los Perros
Tipo de estudio:
Observational_studies
Límite:
Animals
Idioma:
En
Revista:
J Am Vet Med Assoc
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos