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Korean J Anesthesiol > Volume 47(6); 2004 > Article
Korean Journal of Anesthesiology 2004;47(6):767-771.
DOI: https://doi.org/10.4097/kjae.2004.47.6.767   
The Influence of Bispectral Index and Hemodynamics during Propofol TCI with Intravenous Injection of Lidocaine.
Tae Ha Ryu, Si Oh Kim, Woon Yi Baek, Jin Woong Park, Young Hoon Jeon
Department of Anesthesiology and Pain Medicine, College of Medicine, Kyungpook National University Hospital, Daegu, Korea. toohoonn@yahoo.co.kr
Abstract
BACKGROUND
Lidocaine has been used for attenuating cardiovascular responses to endotracheal intubation and thought to have the sedative effect. The sedative effect of lidocaine has not been known well. The BIS (bispectral index) has been used an indicator of the sedative state and has been considered to be related to anesthetic agents and noxious stimulus. The purpose of this study is to evaluate sedative and cardiovascular effects of lidocaine during TCI (target controlled infusion) of propofol by monitoring BIS and hemodynamics.
METHODS
Fifty ASA patient status 1 and 2, aged from 20 to 65 years patients (n = 50, 2 groups) undergoing elective surgeries with general anesthesia. These patients were randomly allocated to group C or L. Patients in Group L received 1.5 mg/kg injection and 40microgram/kg/min infusion of lidocaine. Patients in Group C received normal saline. The BIS, blood pressure and heart rate were mesasured before injection of drug, 1, 2 minute after injection of drug, just before intubation, 1, 2, 5 and 10 min after intubation.
RESULTS
The BIS of group L more decreased than group C at 1, 2, 5 and 10 min after endotracheal intubation. The blood pressure and heart rate did not show any differences between two groups.
CONCLUSIONS
Intravenous injection of lidocaine reduced BIS. Lidocaine had sedative effects under propofol target controlled infusion. But Cardiovascular variables of this study failed to show any differences between two groups (P < 0.05).
Key Words: bispectral index; cardiovascular response; endotracheal intubation; lidocaine; sedation; target controlled infusion
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