D Teshima1, H Nagahama, K Makino, Y Kataoka, R Oishi. 1. Department of Hospital Pharmacy, Faculty of Medicine, Kyushu University, Maidashi, Fukuoka, Japan. dteshima@st.hosp.kyushu-u.ac.jp
Abstract
OBJECTIVE: To develop a simple analytical method for monitoring the low serum levels of propofol found when administered for the sedation of patients in the intensive care unit (ICU). METHODS: A high-performance liquid chromatographic method (HPLC) was used with UV detection. Solid-phase extraction (SPE) cartridges and a semi-microcolumn (TSK gel ODS-80Ts, 2.0 mm i.d. x 25 cm, 5 microm) were used to improve sensitivity. Propofol in the eluate obtained from the SPE cartridge was concentrated to about five times the initial concentration. RESULTS: The sensitivity using the semi-microcolumn was amplified by about three-fold. The assay showed a good linearity with a quantification limit 20 ng/mL. Intra- and inter-assay coefficients of variation were less than 2.2% and 10.0%, respectively. The mean recoveries ranged from 97.6 to 109.5%. CONCLUSION: The HPLC method described should be useful for measuring the low serum propofol levels found when the drug is used for ICU sedation.
OBJECTIVE: To develop a simple analytical method for monitoring the low serum levels of propofol found when administered for the sedation of patients in the intensive care unit (ICU). METHODS: A high-performance liquid chromatographic method (HPLC) was used with UV detection. Solid-phase extraction (SPE) cartridges and a semi-microcolumn (TSK gel ODS-80Ts, 2.0 mm i.d. x 25 cm, 5 microm) were used to improve sensitivity. Propofol in the eluate obtained from the SPE cartridge was concentrated to about five times the initial concentration. RESULTS: The sensitivity using the semi-microcolumn was amplified by about three-fold. The assay showed a good linearity with a quantification limit 20 ng/mL. Intra- and inter-assay coefficients of variation were less than 2.2% and 10.0%, respectively. The mean recoveries ranged from 97.6 to 109.5%. CONCLUSION: The HPLC method described should be useful for measuring the low serum propofol levels found when the drug is used for ICU sedation.
Authors: L McGaughran; L J Voss; R Oliver; M Petcu; P Schaare; J P M Barnard; J W Sleigh Journal: J Clin Monit Comput Date: 2006-05-13 Impact factor: 2.502