Renal effects of amino acid infusion in cardiac surgery.
J Cardiothorac Vasc Anesth
; 14(1): 51-5, 2000 Feb.
Article
em En
| MEDLINE
| ID: mdl-10698393
ABSTRACT
OBJECTIVE:
To evaluate effects of amino acids on renal function and oxygen consumption and the role of individual amino acids on renal blood flow (RBF) changes.DESIGN:
Prospective, randomized, controlled study.SETTING:
Operating room in cardiothoracic surgery department, university hospital.PARTICIPANTS:
Twenty-two male patients submitted to elective first-time coronary artery bypass surgery.INTERVENTIONS:
A catheter was placed in the left renal vein for thermodilution RBF measurements and blood sampling. In 11 patients, a balanced mixed amino acid infusion was infused (200 mL/hr) for 30 minutes immediately after the operation. MEASUREMENTS AND MAINRESULTS:
RBF and glomerular filtration rate increased during amino acid infusion compared with the control group. Renal oxygen consumption increased in the amino acid group and correlated with the increase in RBF (r = 0.70, p<0.001). Amino acid infusion induced two- to fourfold increases in plasma concentrations of individual amino acid concentrations and promoted renal extraction of aspartate, glutamate, glycine, and histidine. No correlation was observed between arterial concentration or uptake of individual amino acids and RBF.CONCLUSIONS:
The increase in RBF from a mixed amino acid infusion was associated with increased glomerular filtration rate and renal consumption of oxygen. Changes in RBF of a mixed amino acid infusion could not be linked to plasma level or renal uptake of any individual amino acids.
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Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Circulação Renal
/
Ponte de Artéria Coronária
/
Aminoácidos
Tipo de estudo:
Clinical_trials
/
Observational_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Aged80
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Cardiothorac Vasc Anesth
Assunto da revista:
ANESTESIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Suécia