What is an Optimal Dosage of Alfentanil for Minimizing the Hemodynamic Change to Endotracheal Intubation during Anesthesia Induction with Propofol Target-Controlled Infusion?.
10.4097/kjae.2004.47.4.455
- Author:
Hyoung Ki MIN
1
;
Woo Jae JEON
;
Serk Young JEONG
;
Jae Hang SHIM
;
Sang Yoon CHO
;
Jong Hoon YEOM
;
Woo Jong SHIN
;
Kyoung Hun KIM
Author Information
1. Department of Anesthesiology and Pain Medicine, College of Medicine, Hanyang University, Seoul, Korea. goldnan@hanyang.ac.kr
- Publication Type:Original Article
- Keywords:
alfentanil;
propofol;
target-controlled infusion (TCI);
tracheal intubation
- MeSH:
Alfentanil*;
Anesthesia*;
Arterial Pressure;
Blood Pressure;
Bradycardia;
Heart Rate;
Hemodynamics*;
Humans;
Hypotension;
Incidence;
Intubation;
Intubation, Intratracheal*;
Laryngoscopy;
Propofol*;
Vecuronium Bromide
- From:Korean Journal of Anesthesiology
2004;47(4):455-460
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Laryngoscopy and tracheal intubation are associated with hemodynamic pressor responses, which can have adverse effects. During anesthesia induction with propofol target-controlled infusion (TCI), we aimed to determine the most appropriate dosage of alfentanil required for intubation, using a steady effect-site concentration of propofol and with the use of vecuronium. METHODS: Eighty ASA class 1 or 2 patients presenting for elective surgery were allocated at random to one of four groups. Anesthesia was induced in all patients with TCI of propofol target concentration 8 microgram /ml, followed by vecuronium (0.12 mg/kg). This was reduced to 5microgram/ml when the effect-site concentration had been 4microgram/ml. After the effect-site concentrations had reached to 5microgram/ml, control group received normal saline, group 1 received alfentanil 10microgram/kg, group 2 received alfentanil 20microgram/kg, and group 3 received alfentanil 30microgram/kg. Laryngoscopy and intubation were performed 90 s later. Heart rate was monitored continuously. Systolic blood pressure, diastolic blood pressure and mean arterial pressure were measured at pre-induction, post-induction (pre-intubation) and post-intubation, respectively. Complications such as hypotention and bradycardia were recorded until 5 minutes had elapsed after tracheal intubation. RESULTS: Control group showed significant increases associated with tracheal intubation in all hemodynamic variables (P < 0.05). Post-intubation values decreased significantly from pre-induction values in groups 1, 2 and 3 (P < 0.05). In groups 2 and 3, hypotension and bradycardia occurred (zero in group 1) but there were no significant differences in their incidences between the three groups. CONCLUSIONS: We suggest that alfentanil 10microgram/kg constitutes the optimal dosage to obtund the hemodynamic responses to tracheal intubation, using propofol TCI (5microgram/ml) and vecuronium for induction of anesthesia.
