title: Educating patients about anesthesia: a systematic review of randomized controlled trials of media-based interventions.
abstract: In this systematic review, we compared the effectiveness of media-based patient education about anesthesia. Fifteen randomized controlled trials (n = 1506) were identified after a systematic search of electronic databases (MEDLINE, EMBASE, CINAHL, PSYCINFO, The Cochrane Controlled Trials Registry), published articles, and contact with authors. Outcomes assessed were anxiety, knowledge, and patient satisfaction. Anxiety levels before anesthesia were less intense in subjects receiving the video and printed information compared with those receiving no intervention (weighted mean difference of 3; 95% confidence interval [95%CI], 1-5 Spielberger's State and Trait Anxiety Inventory). Patients in the video group were more likely to answer all knowledge questions correctly compared with patients with no intervention (relative risk of 6.64; 95%CI, 2.05-21.52). The level of knowledge about pain management was higher in the video group compared with patients with no intervention (weighted mean difference of 17%; 95%CI, 9-25). However, the level of patient satisfaction with the intervention (expectation versus actual anesthetic experience) was similar between the groups (relative risk of 1.06; 95%CI, 0.93-1.22). This systematic review supports the use of video and printed information about general process and risks of anesthesia for patient education before surgery.
  
  
  CONCLUSIONS
  The effectiveness of media-based interventions for educating patients about general process and risks of anesthesia were compared in this systematic review. The use of video and/or printed information can decrease patient anxiety and increase patient knowledge. However, patient satisfaction was similar between media-based intervention and nonintervention groups.
authors.affiliation: Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.
authors.forename: Anna
authors.initials: A
authors.lastname: Lee
authors.forename: Po Tong
authors.initials: PT
authors.lastname: Chui
authors.forename: Tony
authors.initials: T
authors.lastname: Gin
mesh_terms: D000328:Adult; D000758:Anesthesia; D001007:Anxiety / Q000517:prevention & control; D002648:Child; D003146:Communications Media; D003627:Data Interpretation, Statistical; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D016247:Information Storage and Retrieval; D010353:Patient Education as Topic / Q000379:methods*; D017060:Patient Satisfaction; D011785:Quality Assurance, Health Care; D016032:Randomized Controlled Trials as Topic / Q000592:standards; D016896:Treatment Outcome