Impact of chronic kidney disease on the presence and severity of aortic stenosis in patients at high risk for coronary artery disease.
Cardiovasc Ultrasound
; 9: 31, 2011 Nov 16.
Article
em En
| MEDLINE
| ID: mdl-22087774
ABSTRACT
OBJECTIVE:
We evaluated the impact of chronic kidney disease (CKD) on the presence and severity of aortic stenosis (AS) in patients at high risk for coronary artery disease (CAD).METHODS:
One hundred and twenty consecutive patients who underwent invasive coronary angiography were enrolled. Aortic valve area (AVA) was calculated by the continuity equation using transthoracic echocardiography, and was normalized by body surface area (AVA index).RESULTS:
Among all 120 patients, 78% had CAD, 55% had CKD (stage 3 81%; stage 4 19%), and 34% had AS (AVA < 2.0 cm²). Patients with AS were older, more often female, and had a higher frequency of CKD than those without AS, but the prevalence of CAD and most other coexisting conventional risk factors was similar between patients with and without AS. Multivariate linear regression analysis indicated that only CKD and CAD were independent determinants of AVA index with standardized coefficients of -0.37 and -0.28, respectively. When patients were divided into 3 groups (group 1 absence of CKD and CAD, n = 16; group 2 presence of either CKD or CAD, n = 51; and group 3 presence of both CKD and CAD, n = 53), group 3 had the smallest AVA index (1.19 ± 0.30*# cm²/m², *p < 0.05 vs. group 1 1.65 ± 0.32 cm²/m², and #p < 0.05 vs. group 2 1.43 ± 0.29* cm²/m²) and the highest peak velocity across the aortic valve (1.53 ± 0.41*# m/sec; *p < 0.05 vs. group 1 1.28 ± 0.29 m/sec, and #p < 0.05 vs. group 2 1.35 ± 0.27 m/sec).CONCLUSION:
CKD, even pre-stage 5 CKD, has a more powerful impact on the presence and severity of AS than other conventional risk factors for atherosclerosis in patients at high risk for CAD.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estenose da Valva Aórtica
/
Doença da Artéria Coronariana
/
Ecocardiografia
/
Falência Renal Crônica
Tipo de estudo:
Etiology_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
País/Região como assunto:
Asia
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article