LI Jingfeng,SHI Zhengyuan,ZHANG Mengjie,et al.Establishment of a method for detecting propofol concentration in plasma and its application in patients with lymphedema[J].ZHONGGUO YAOFANG,2024,35(04):476-480.
LI Jingfeng,SHI Zhengyuan,ZHANG Mengjie,et al.Establishment of a method for detecting propofol concentration in plasma and its application in patients with lymphedema[J].ZHONGGUO YAOFANG,2024,35(04):476-480. DOI: 10.6039/j.issn.1001-0408.2024.04.18.
Establishment of a method for detecting propofol concentration in plasma and its application in patients with lymphedema
To establish a method for the determination of propofol concentration in human plasma and apply it in patients with lymphedema.
METHODS
2
The concentration of propofol was determined by UPLC-MS/MS after protein precipitation of plasma samples using thymol as internal standard. The sample was eluted on a Kinetex C
18
column with a mobile phase consisting of acetonitrile (A)-water (B) for gradient elution at the flow rate of 200 μL/min. The sample size was 5 μL, and the column temperature was set at 40 ℃. The sample chamber temperature was 15 ℃. Using multi-reaction monitoring mode, the ion pairs for quantitative analysis were
m/z
177.0→161.2 (propofol) and
m/z
149.0→133.1 (internal standard), respectively. The above method was used to determine the plasma concentration of propofol in 6 patients with lymphedema.
RESULTS
2
The linear range of propofol was 50-5 000 ng/mL (
r
=0.995 0). RSDs of within- and between-batch precision were not more than 8.08%; no endogenous interference, carryover effect, or dilution effect was observed in blank plasma. The extraction recovery ranged from 89.80% to 93.73%, and matrix effects were within the range of 97.93%-101.73%. RSDs of the stability test were all lower than 3.27%. During intraoperative TCI 2-30 min, the plasma concentration of propofol in 6 patients was maintained in the range of 1 865.3-6 056.2 ng/mL, and the propofol was almost excreted within 4-8 h after operation.
CONCLUSIONS
2
The established UPLC-MS/MS method in this study can achieve the determination of propofol and a simple and fast sample pretreatment process without derivatization; it is proved to be suitable for the concentration monitoring of propofol in plasma samples of patients with lymphedema.
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