目的 了解急进高原地区新战士生理生化指标的变化,评估曲美他嗪对急性高原反应的药物作用。方法 选取120名入高原服役新兵,随机分为曲美他嗪组和对照组。分别检测其高原反应性评分,心、肺功能,以及动脉血气及静脉血氧化应激指标。结果 与急进高原前指标比较,进入高原后战士的大部分心、肺功能、血气及氧化应激指标恶化(P<0.05);进入高原后与对照组比较,曲美他嗪组的心功能指数[(12.74±2.44 )vs (14.28±4.38)]、A-aDO₂、 H₂O₂和LA较低,pH、CAT和SOD较高(P<0.05)。结论 进入高原后,战士的心肺、酸碱平衡及抗氧化应激能力下降。曲美他嗪可明显提高战士的心功能,对酸碱平衡及抗氧化应激有一定益处,对呼吸功能则无明显作用。

Objective To learn physiological and biochemical changes in recruits who enter into high altitude area, and to evaluate the treatment effect of trimetazidine on acute high altitude reaction. Methods A group of 120 recruits who served in plateau area were chosen and randomized into a trimetazidine group and a control group. A high altitude reaction scale was conducted, cardiovascular and pulmonary function data were collected, and arterial blood gas and oxidative stress indexes of veins were measureds,respectively. Results Compared with indexes before entry into plateau, most indexes of cardiovascular and pulmonary function, blood gas and oxidative stress showed a deteriorated tendency after entry into plateau (P<0.05). Compared with the control group after entry into plateau, the cardiovascular function index [(12.74±2.44) vs　(14.28±4.38)], A-aDO₂, H₂O₂ and LA were lower, while pH, CAT and SOD were higher in the trimetazidine group (P<0.05). Conclusions Signs of cardiovascular and pulmonary function, acid-base equilibrium and anti-oxidative stress ability of recruits worsened after entry into plateau. Trimetazidine may increase soldiers’ cardiovascular function significantly, and offer certain benefit to acid-base equilibrium and anti-oxidative stress process, but in vain to improve pulmonary function.