The influence of anaesthetic depth on patient outcome after major surgery

全世界每年有数百万高风险患者接受大手术的全身麻醉，但这些患者的最佳麻醉深度尚不清楚。这项大型随机试验的目的是确定轻度与深度全身麻醉对6,500名老年患者术后一年生存率的影响。如果轻度麻醉与更好的存活率有关，这一结果将立即实施，将挽救生命，并将减少护理费用。

Millions of high-risk patients have general anaesthesia for major surgery worldwide every year, but the optimal depth of anaesthesia for these patients is not known. The aim of this large randomised trial is to determine the impact of light versus deep general anaesthesia on survival at one year postoperatively in 6,500 older patients. If light anaesthesia is associated with better survival, this result will be immediately implementable, will save lives and will reduce the costs of care.