EC50 and EC95 of remifentanil to prevent rocuronium-induced withdrawal movements in children / 대한마취과학회지
Korean Journal of Anesthesiology
;
: 433-438, 2014.
Artigo
em Inglês
| WPRIM
| ID: wpr-86649
ABSTRACT
BACKGROUND:
Intravenous administration of rocuronium induces intense pain in most patients (60-100%). This could be harmful during anesthesia induction because of the unintended reflex movement of an unconscious patient in response to the pain. Previous studies have reported that remifentanil effectively reduces rocuronium-induced pain and withdrawal movements. This study was designed to evaluate the EC50 and EC95 of remifentanil to prevent withdrawal movements in children.METHODS:
We enrolled a total of 171 pediatric patients scheduled for general anesthesia in this study. Remifentanil was administrated by target-controlled infusion. Effect-site target concentrations ranged from 0.5 to 3.0 ng/ml. At each concentration, experiments were repeated in 10-20 patients. Propofol 2 mg/kg and rocuronium 0.9 mg/kg were administrated after equilibration of plasma and effect-site target remifentanil concentration. The withdrawal movements were graded on a 4-point scale. The EC50 and EC95 of remifentanil to prevent rocuronium-induced withdrawal movements were determined by using a logistic regression model.RESULTS:
The logistic regression model showed that the probability of preventing rocuronium-induced withdrawal movement was as follows exp (-3.49 + 2.07 x remifentanil concentration) / (1 + exp [-3.49 + 2.07 x remifentanil concentration]). EC50 and EC95 were 1.69 ng/ml (95% confidence intervals [CIs], 1.42-1.87) and 3.11 ng/ml (95% CIs, 2.79-3.72), respectively.CONCLUSIONS:
Administration of remifentanil at an effect-site target concentration of 3.1 ng/ml could effectively prevent rocuronium-induced withdrawal movements.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Pediatria
/
Plasma
/
Reflexo
/
Modelos Logísticos
/
Propofol
/
Administração Intravenosa
/
Anestesia
/
Anestesia Geral
Tipo de estudo:
Fatores de risco
Limite:
Criança
/
Humanos
Idioma:
Inglês
Revista:
Korean Journal of Anesthesiology
Ano de publicação:
2014
Tipo de documento:
Artigo
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