B-Aware研究中术中知晓患者的创伤后应激障碍

背景术中知晓的长期影响差异巨大，部分患者没有任何长期影响，而另一些患者则可导致严重和持久的心理障碍。本研究比较了随机化B—Aware研究中，发生明确术中知晓患者与未发生明确术中知晓患者创伤后应激障碍（postlraumaticstressdisorder，PTSD）的发生率。方法我们采用配对群体设计，旨在随访发生明确术中知晓的13例患者。每1例发生术中知晓的患者均按年龄、性别、手术类型、手术日期及手术医院配比4例对照。以临床术后应激障碍评分对每1例术中知晓及对照患者进行面对面的访谈。结果本研究收集数据资料的时间从2006年6月到2007年3月，随访的中位数时间5．3年（范围4．3-5．7年）。其间发生明确术中知晓的13例患者中6例去世，7例患者中的5例（71％）与25例对照中的3例（12％）在随访时点表现符合PTSD的诊断标准（校正的比值比=13．3[95％的可信区间为1．4-650]，P=0．02）。症状出现时间中位数时间为术后14天（范围7-243天），症状持续时间的中位数为4．7年（范围4．4-5．6年）。结论PTSD在B-Aware研究中有明确术中知晓的患者中常见而且持久。全麻下应强化预防患者术中知晓的措施。

BACKGROUND： The long-term consequences of an awareness episode vary. Some patients do not have any long-term disability, whereas others develop psychological problems that may be severe and persistent. In this study, we compared the incidence of posttraumatic stress disorder （FFSD） in patients with and without confirmed awareness who were randomized in the B-Aware Trial. METHODS： We used a matched cohort design, aiming to follow up the 13 patients with confirmed awareness. Each surviving awareness patient was matched with 4 controls for age, sex, surgery type, date of surgery, and hospital. A face-to-face interview was conducted with each awareness patient and matched controls using the Clinician Administered Posttraumatic Stress Disorder Scale. RESULTS： Data collection for this study occurred between June 2006 and March 2007, with a median follow-up time ofS. 3 yr （range, 4.3 -5.7 yr）. Six of the 13 confirmed awareness patients had died. Five of the 7 confirmed awareness patients （71% ） and 3 of the 25 controls （ 12% ） fulfilled the criteria for PTSD at the time of the interview （adjusted odds ratio 13.3 [ 95 % confidence interval： 1.4 -650 ]; P =0.02 ）. The median onset time of symptoms was 14 days （range, 7 -243 days） after surgery, and the median duration of symptoms was 4.7 yr （range, 4.4 -5.6 yr）. CONCLUSIONS： PTSD was common and persistent in the confirmed awareness patients of the B-Aware Trial. Strategies to prevent awareness in patients under general anesthesia are iustified.