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A clinical comparison of etomidate-lipuro, propofol and admixture at induction

Author(s): Saricaoglu Fatma | Uzun Sennur | Arun Oguzhan | Arun Funda | Aypar Ulku

Journal: Saudi Journal of Anaesthesia
ISSN 1658-354X

Volume: 5;
Issue: 1;
Start page: 62;
Date: 2011;
Original page

Keywords: Bispectral index | etomidate | propofol lipuro | hemodynamics | injection pain | myoclonus

Objective: The purpose of this study was to compare etomidate-lipuro and propofol and 50%, (1:1) admixture of these agents at induction with special reference to injection pain, hemodynamic changes, and myoclonus. Methods: Ninety patients were assigned at random to three groups in which induction was performed with either etomidate-lipuro, propofol or etomidate-lipuro−propofol admixture. After monitorization with bispectral index (BIS) all agents were given with infusion with a perfuser at a constant rate of 200 ml/min till the BIS values decreased to 40. Blood pressure and heart rate were measured every 30 s at this period. Patients were asked for pain at the injection site and observed visually for myoclonus. The time BIS values decreased to 40 (BIS 40 time) and total amounts of induction doses were measured. Results: BIS 40 time measurements were P > E > PE (199.4 ± 40.9, 176.9 ± 31.6, 163.5 ± 20.6 s). The hemodynamic (systolic, diastolic and mean blood pressures, heart rate) changes were minimal in group PE than other two groups (P = 0.017). The intensity of myoclonus was graded as mild in 9, moderate in 12, and severe in 5 patients in the group E (76.3%). Myoclonus was not observed in group PE and group P. There were no injection pain in group PE as the incidence were (83.8%) in group P and in (63.2%) group E. Conclusion: Incidence of hemodynamic changes, myoclonus, and injection pain is significantly lower in group PE. BIS 40 times is least in group PE. We concluded that 1:1 admixture of etomidate-lipuro and propofol is a valuable agent for induction.
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