英语翻译（这些不用翻————题目：俯卧位对急性呼吸衰竭病人生存的影响背景 虽然将有呼吸衰竭（acute respirat

英语翻译
（这些不用翻————题目：俯卧位对急性呼吸衰竭病人生存的影响
背景 虽然将有呼吸衰竭（acute respiratory failure）的病人置于俯卧位（prone position）,可使他们当时的氧合作用（oxygenation）提高60% - 70%,但尚不知道对病人生存的作用.
方法 在一项多中心随机化的临床试验（multicenter,randomized trial）中,我们对患急性肺损伤（acute lung injury）或急性呼吸窘迫综合征（acute respiratory distress syndrome）的病人,进行了常规治疗（仰卧位）（supine position）与预先规定将病人置于俯卧位连续10天、每天≥6小时策略的比较.我们纳入304例病人,分为两组,每组152例.————不用翻）
请翻译以下的：
结果 10天研究期间的死亡率为23.0%,离开加强监护病房（intensive care unit）时的死亡率为49.3%,6个月时的死亡率为60.5%.与仰卧组相比,俯卧组的死亡相对危险在研究期结束时为0.8（95%可信区间为0.56 – 1.17）；在离开加强监护病房时为1.05（95%可信区间为0.84 – 1.32）；在6个月时为1.06（95%可信区间为0.88 – 1.28）.研究期间,每天早晨在病人仰卧位时所测定的动脉氧分压（the partial pressure of arterial oxygen）与吸入氧分数（the fraction of inspired oxygen）的比值,俯卧组高于仰卧组（63.0±66.8对44.6±68.2,p=0.02）.与体位相关的并发症（例如褥疮和意外脱管）（sores and accidental extubation）的发生率两组相似.
结论 虽然将呼吸衰竭的病人置于俯卧位能提高其氧合作用,但不能提高生存率.

The result for this trail is that the death rate during the 10 days trial is 23.0%. The death rate after leaving the intensive care unit is 49.3%. The death rate after six months is 60.5%. Compared with the group on supine position, the rate of death versus terminally ill of the prone position group is 0.8 by the end of the trial. (95% of the confidence interval is between 0.56 and 1.17.) The rate of death versus terminally ill after leaving the intensive care unit is 1.05. (95% of the confidence interval is between 0.84 and 1.32.) The rate of death versus terminally ill after six months is 1.06. (95% of the confidence interval is between 0.88 and 1.28). During the study period, the rate of the partial pressure of arterial oxygen versus the fraction of inspired oxygen monitored on the patients on prone position in the morning is higher than that gained from supine position group. (63.0±66.8 Vs 44.6±68.2,p=0.02). The complication related to body position such as sores and accidental extubation is similar to each other between the two groups.
Conclusion
Although treating patients with acute respiratory failure on prone position can improve oxygenation, the life survival rate can not be improved.