Long-term Mortality Predictors in Patients with Small Aortic Annulus Undergoing Aortic Valve Replacement with a 19- or 21-mm Bioprosthesis.
Braz J Cardiovasc Surg
; 31(4): 275-280, 2016.
Article
em En
| MEDLINE
| ID: mdl-27849298
ABSTRACT
Introduction:
Replacement of the aortic valve in patients with a small aortic annulus is associated with increased morbidity and mortality. A prosthesis-patient mismatch is one of the main problems associated with failed valves in this patient population.Objective:
To evaluate the long-term mortality predictors in patients with a small aortic annulus undergoing aortic valve replacement with a bioprosthesis.Methods:
In this retrospective observational study, a total of 101 patients undergoing aortic valve replacement from January 2000 to December 2010 were studied. There were 81 (80.19%) women with a mean age of 52.81±18.4 years. Severe aortic stenosis was the main indication for surgery in 54 (53.4%) patients. Posterior annulus enlargement was performed in 16 (15.8%) patients. Overall, 54 (53.41%) patients underwent concomitant surgery 28 (27.5%) underwent mitral valve replacement, and 13 (12.7%) underwent coronary artery bypass graft surgery.Results:
Mean valve index was 0.82±0.08 cm(2)/m(2). Overall, 17 (16.83%) patients had a valve index lower than 0.75 cm(2)/m(2), without statistical significance for mortality (P=0.12). The overall 10-year survival rate was 83.17%. The rate for patients who underwent isolated aortic valve replacement was 91.3% and 73.1% (P=0.02) for patients who underwent concomitant surgery. In the univariate analysis, the main predictors of mortality were preoperative ejection fraction (P=0.02; HR 0.01) and EuroSCORE II results (P=0.00000042; HR 1.13). In the multivariate analysis, the main predictors of mortality were age (P=0.01, HR 1.04) and concomitant surgery (P=0.01, HR 5.04). Those relationships were statistically significant.Conclusion:
A valve index of < 0.75 cm(2)/m(2) did not affect 10-year survival. However, concomitant surgery and age significantly affected mortality.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estenose da Valva Aórtica
/
Bioprótese
/
Implante de Prótese de Valva Cardíaca
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Child
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Braz J Cardiovasc Surg
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Brasil