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  • Title: Study on the Relationship between Rivaroxaban and Factor Xa Activity in Blood Based on HPLC-MS/MS.
    Author: Liu H, Zhao Z, Wang Y, Liu L, Yang Y, An Z.
    Journal: Curr Drug Metab; 2021; 22(14):1132-1138. PubMed ID: 34825867.
    Abstract:
    OBJECTIVE: The aim of the study was to investigate a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method for the determination of rivaroxaban and evaluate the correlation between plasma concentration and anti-Xa activity in patients using oral rivaroxaban. METHODS: In this study, the plasma concentration of rivaroxaban and anti-Xa factor activities was determined in 125 patients, and the relationship between the two variables was analysed by SPSS 21.0 software. RESULTS: The results showed that the plasma concentrations of oral rivaroxaban patients were significantly correlated with the activity of the anti-Xa factor (Spearman's r = 0.990, P < 0.05). CONCLUSION: The plasma concentrations of rivaroxaban are a potentially useful monitoring indicator to assess the patient's bleeding risk if testing for plasma anti-Xa activity is not available.
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