Hemodynamic and Auditory Evoked Potential Index Responses to Intubation during the Target-Effect Site-Controlled Infusion of Propofol.
10.4097/kjae.2003.45.5.589
- Author:
Yun Jin KIM
1
;
Hee Jung BAIK
;
Jong Hak KIM
Author Information
1. Department of Anesthesiology, College of Medicine, Ewha Womans University, Seoul, Korea. baikhj@mm.ewha.ac.kr
- Publication Type:Original Article ; Randomized Controlled Trial
- Keywords:
auditory evoked potential index;
effect site;
hemodynamic response;
intubation;
propofol;
target-controlled infusion
- MeSH:
Anesthesia;
Anesthesia, General;
Arterial Pressure;
Evoked Potentials, Auditory*;
Heart Rate;
Hemodynamics*;
Humans;
Intubation*;
Midazolam;
Premedication;
Propofol*;
Unconsciousness
- From:Korean Journal of Anesthesiology
2003;45(5):589-595
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: We evaluated the hemodynamic responses and the rapidly extracted auditory evoked potential index (A-line ARX index or AAI) responses during induction and intubation at different effect site concentration of propofol using target-controlled infusion. METHODS: Thirty patients scheduled for elective surgery under general anesthesia were randomly assigned to 3 groups (Groups I, II, and III). Anesthesia was induced using the infusion of propofol at three different effect site concentrations as a target (Group I: 3.0microgram/ml, Group II: 3.5microgram/ml, and Group III: 4.0microgram/ml) following midazolam premedication. We measured AAI, systolic, diastolic, and mean arterial blood pressures and the heart rate after midazolam premedication, loss of consciousness, just before intubation, immediately after intubation, and 1, 2, and 3 minutes after intubation. RESULTS: In Groups II and III, AAI were significantly lower than that in group I immediately after intubation, and % changes in diastolic and mean arterial blood pressures were significantly lower than that in group I 1 minute after intubation (P<0.05). CONCLUSIONS: Effect site concentration of propofol targeted at 3.5microgram/ml or 4.0microgram/ml produces better hemodynamic stability and AAI responses during intubation than that achieved at 3.0microgram/ml.
