EC50 and EC95 of remifentanil to prevent rocuronium-induced withdrawal movements in children / 대한마취과학회지
Korean Journal of Anesthesiology
;
: 433-438, 2014.
Artículo
en Inglés
| 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:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Pediatría
/
Plasma
/
Reflejo
/
Modelos Logísticos
/
Propofol
/
Administración Intravenosa
/
Anestesia
/
Anestesia General
Tipo de estudio:
Factores de riesgo
Límite:
Niño
/
Humanos
Idioma:
Inglés
Revista:
Korean Journal of Anesthesiology
Año:
2014
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS