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目的探讨创伤性ARDS发生率与各种危险因素的关系，提出一个比较简便的计算创伤性ARDS发生率的公式，以便更早、更准确地预测ARDS的发生，提高诊疗水平。方法研究1103例严重创伤的病人，分析22例发生ARDS病人的各种因素，找出导致ARDS发生的最危险的因素，继而提出了一个计算创伤性ARDS发生指数（I）的公式：I＝PF-（N十T＋F＋M＋X）。结果如果I值大于10，将不发生ARDS：如果I值在-2～10之间，则95％的病例不发生ARDS；如果I值小于-2，则90％病例发生ARDS。结论本公式是预测创伤性ARDS发生率的可靠途径，其方法简便可信，有推广价值。
Objective To explore the relationship between the incidence of traumatic ARDS and various risk factors and to propose a simple formula for calculating the incidence of traumatic ARDS in order to predict the occurrence of ARDS earlier and more accurately and improve the diagnosis and treatment. Methods A total of 1103 patients with severe trauma were studied. Various factors of 22 ARDS patients were analyzed to find out the most dangerous factors leading to ARDS. Then a formula to calculate traumatic ARDS index (I) was proposed: I = PF - (N + T + F + M + X). Results ARDS will not occur if the I value is greater than 10: ARDS does not occur in 95% of cases if the I value is between -2 and 10; ARDS occurs in 90% of cases if the I value is less than -2. Conclusion This formula is a reliable way to predict the incidence of traumatic ARDS. The method is simple, credible and has the promotion value.