Objective To collect and summarize evidence for prevention of unplanned perioperative hypothermia. Methods We systematically search for evidence on prevention of unplanned perioperative hypothermia in PubMed,Up To Date,Cochrane Library,JBI,AHRQ,AORN,CINAHL,RNAO,NICE,CGC,CNKI,Wanfang,CBM and other data-bases,including guidelines,systematic reviews,best practices information sheet,evidence summary,expert consensus,etc. The retrieval period was from the inception of databases to August 29,2018. Two authors independently evaluated literature quality and extracted evidence. Results A total of 13 articles were included,including 2 guidelines,3 expert consensus,6 systematic reviews,1 best practice information sheet,and 1 evidence summary. The best evidence included preoperative assessment,temperature monitoring,preoperative interventions,intraoperative interventions,postoperative interventions and quality management. Conclusion Operating room nurses should regularly receive training on unplanned perioperative hypothermia,use scientific tools to assess the risks. Evidence users should select best evidence with consideration of hospital characteristics and clinical settings in order to reduce unplanned perioperative hypothermia.
