Wu Christopher L, Hsu Wesley, Richman Jeffrey M, Raja Srinivasa N
Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Hospital, Carnegie 280, 600 North Wolfe Street, Baltimore, MD 21287, USA.
Reg Anesth Pain Med. 2004 May-Jun;29(3):257-68. doi: 10.1016/j.rapm.2003.11.007.
It has been suggested that intraoperative neuraxial (spinal, epidural) anesthesia may decrease postoperative cognitive dysfunction when compared with general anesthesia, but the issue remains controversial. We systematically reviewed the data from published studies to determine the effect of intraoperative neuraxial anesthesia versus general anesthesia on postoperative cognitive dysfunction and delirium.
Studies were identified by searching the PubMed database of the National Library of Medicine (1966 to 2003) for terms related to cognitive dysfunction after surgery. Inclusion criteria were a comparison of intraoperative neuraxial anesthesia versus general anesthesia, and the outcome of postoperative cognitive dysfunction. A total of 196 abstracts were identified, and 24 articles were analyzed. Each article was reviewed, and data were extracted from tables or text or extrapolated from figures as needed.
Of the 24 trials obtained, 19 were randomized and 4 were observational (nonrandomized) trials (1 trial was a combination of randomized and observational data). The age of patients studied was typically greater than 60 years, and a wide range of neuropsychometric tests were used to evaluate cognitive function. The majority of trials (23/24 of all trials and 18/19 of randomized trials) did not demonstrate a benefit from neuraxial anesthesia in decreasing the incidence of postoperative cognitive dysfunction.
The use of intraoperative neuraxial anesthesia does not appear to decrease the incidence of postoperative cognitive dysfunction when compared with general anesthesia. There are methodologic and study-design issues present in many studies, and further elucidation of the pathophysiology of postoperative cognitive dysfunction may provide a direction for future studies.
有观点认为,与全身麻醉相比,术中神经轴索(脊髓、硬膜外)麻醉可能会降低术后认知功能障碍的发生率,但这一问题仍存在争议。我们系统回顾了已发表研究的数据,以确定术中神经轴索麻醉与全身麻醉对术后认知功能障碍和谵妄的影响。
通过检索美国国立医学图书馆的PubMed数据库(1966年至2003年),查找与术后认知功能障碍相关的术语来确定研究。纳入标准为术中神经轴索麻醉与全身麻醉的比较,以及术后认知功能障碍的结果。共识别出196篇摘要,并分析了24篇文章。对每篇文章进行了回顾,并根据需要从表格、文本中提取数据或从图表中推断数据。
在获得的24项试验中,19项为随机试验,4项为观察性(非随机)试验(1项试验是随机和观察性数据的组合)。所研究患者的年龄通常大于60岁,并使用了广泛的神经心理测试来评估认知功能。大多数试验(所有试验中的23/24以及随机试验中的18/19)未显示神经轴索麻醉在降低术后认知功能障碍发生率方面有优势。
与全身麻醉相比,术中使用神经轴索麻醉似乎并未降低术后认知功能障碍的发生率。许多研究存在方法学和研究设计问题,进一步阐明术后认知功能障碍的病理生理学可能为未来研究提供方向。