The influence of anaesthetic depth on patient outcome after major surgery

全世界每年有数百万高危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和深度全身麻醉对6500名老年患者术后一年存活率的影响。如果光麻醉与更好的生存相关，这一结果将立即可实施，将拯救生命，并将降低护理成本。

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.