白细胞介素-18的变化对创伤后脏器并发症的预警价值

目的 研究创伤患者白细胞介素(IL)-18血浆水平的变化规律，并评估其对创伤后脏器并发症的预警价值。方法 对2001年3月～2002年9月收治的54例创伤患者进行前瞻性研究，根据损伤严重度评分(ISS)把患者分成低ISS(L-ISS)和高ISS(H-ISS)两组，在入院当天和第4，7和14天分别采集血标本，酶联免疫吸附法(ELISA)测量IL-18水平；此外，根据病历资料对发生全身炎症反应综合征(SIRS)、脓毒症(Sepsis)和多器官功能不全综合征(MODS)患者的IL-18血浆水平进行回顾性分析，计算其预警临界值。结果 IL-18在创伤后出现明显改变，在第4，7天达到峰值、并在第14天开始逐渐下降，其改变与创伤严重程度有关；发生脏器并发症的患者IL-8血浆水平相对较高，伤后7d内IL-18的水平越高，则预示伤后的脏器并发症越严重。结论 IL-18可以作为一项预测创伤后脏器并发症的敏感指标。

Value of interleukin-18 changes in early warning of organ dysfunction after trauma

Objective To detect the changes of interleukin-18 (IL-18) in plasma of trauma patients and evaluate their value in early warning of organ dysfunction. Methods A prospective study was carried out in 54 trauma patients admitted in from March 2001 to September 2002, which were divided into low injury severity score(ISS) group (Group L-ISS) and high ISS group (Group H-ISS). ELISA was applied to measure the level of IL-18 of blood samples that were collected on arrival, at days 4, 7 and 14 following admission. In the meantime, IL-18 level of plasma samples from patients with systemic inflammatory response syndrome (SIRS), sepsis and multiorgan dysfunction syndrome (MODS) was retrospectively analyzed so as to calculate the critical value of IL-18 in predicting organ dysfunction. Results After trauma, IL-18 concentration of plasma reached peak at days 4 and 7, and decreased gradually at day 14, which was significantly related to SIRS, sepsis and MODS, respectively. The IL-18 level was high relatively in plasma from patients with organ dysfunction. The higher IL-18 level in plasma within seven days after trauma indicated the severer organ dysfunction. Conclusion IL-18 is sensitive in early warning of organ dysfunction after trauma.