Abstract Objective To investigate the plasma concentration of endogenous morphine and the value of endogenous morphine in predicting shock, death, and multiple organ dysfunction syndrome (MODS) in children with sepsis.Methods A total of 31 children with sepsis who met the diagnostic criteria were enrolled. According to the presence or absence of shock, they were divided into non-shock group with 19 children and shock group with 12 children. According to the outcome, they were divided into survival group with 22 children and death group with 9 children. According to the presence or absence of MODS, they were divided into non-MODS group with 13 children and MODS group with 18 children. In addition, 16 children with common infection and 31 who underwent physical examination were enrolled as controls. High-performance liquid chromatography-mass spectrometry was used to measure the plasma concentration of endogenous morphine. The receiver operating characteristic (ROC) curve was used to evaluate the value of endogenous morphine in predicting shock, death, and MODS in children with sepsis.Results No endogenous morphine was detected in the healthy control group. Endogenous morphine was detected in 3 children from the common infection group and in all of 31 children with sepsis. The shock group had a significantly higher plasma concentration of endogenous morphine than the non-shock group (P < 0.05). The death group had a significantly higher plasma concentration of endogenous morphine than the survival group (P < 0.05). The MODS group had a significantly higher plasma concentration of endogenous morphine than the non-MODS group (P < 0.05). The ROC curve showed that endogenous morphine had certain value in predicting shock, death, and MODS in children with sepsis (P < 0.05).Conclusions There is a significant increase in the plasma concentration of endogenous morphine in children with sepsis, and endogenous morphine has a good value in predicting the risk of shock, death, and MODS.
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