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目的:调查天津市三级甲等医院倒班护士的昼夜节律类型、睡眠质量与职业倦怠现状，分析昼夜节律类型、睡眠质量对职业倦怠的影响，为降低倒班护士职业倦怠水平提供理论依据。方法:采用一般资料调查表、昼夜节律类型量表中文版（CTI-11）、匹兹堡睡眠质量指数量表（PSQI）、工作倦怠量表（MBI-GS）对天津市22家三级甲等医院491名倒班护士进行调查。结果:CTI-11量表中，491名护士的灵活性/刚性分量表得分为（10.64 ± 4.14）分，困倦/活力分量表得分为（17.67 ± 4.80）分；PSQI量表得分为（7.47 ± 3.66）分；MBI-GS量表总得分为（51.14 ± 15.11）分。多元回归分析结果显示，灵活性/刚性、困倦/活力、睡眠质量是倒班护士情绪耗竭的影响因素（n t值为7.415、- 5.281、7.153，n P < 0.01）；灵活性/刚性、困倦/活力、睡眠质量是倒班护士人格解体的影响因素（ n t值为4.828、- 4.079、4.959，n P < 0.01）；灵活性/刚性是倒班护士成就感低的影响因素（ n t值为- 3.887，n P < 0.01）。n 结论:天津市三级甲等医院倒班护士职业倦怠处于较高水平，昼夜节律类型、睡眠质量是影响护士职业倦怠的重要因素，护理管理者可根据不同护士昼夜节律特点合理调整班次安排，使人员配置更加合理，通过指导护士根据自身睡眠特点采取多种技巧改善自身睡眠质量，减少倒班对个体造成的负面影响，降低其职业倦怠水平。“,”Objective:To investigate the status of shift nurses′ circadian rhythm, sleep quality and job burnout in 3A-level hospitals, and analyze the influence of circadian rhythm and sleep quality on job burnout, so as to provide theoretical basis for reducing the level of job burnout of shift nurses.Methods:A total of 491 shift nurses were investigated with General Information Questionnaire, Circadian Type Questionnaire(CTI-11), Pittsburgh Sleep Quality Index (PSQI) and Maslach Burnout Inventory General Survey(MBI-GS).Results:The Flexibility or Rigidity score of shift nurses was 10.64±4.14, the Languid or Vigorous score was 17.67±4.80, the PSQI score was 7.47±3.66, the MBI-GS score was 51.14±15.11. The results of multiple regression analysis showed that flexibility or rigidity, languid or vigorous, sleep quality were the influencing factors of emotional exhaustion(n t value was 7.415, - 5.281, 7.153, n P<0.01); flexibility or rigidity, languid or vigorous, sleep quality were the influencing factors of depersonalization (n t value was 4.828, - 4.079, 4.959, n P<0.01); flexibility or rigidity was the influencing factors of professional efficacy(n t value was - 3.887, n P<0.01).n Conclusions:The job burnout of shift nurses in Tianjin 3A-level hospitals were serious. The circadian rhythm and sleep quality are the important factors that affect the job burnout of shift nurses. According to the type of circadian rhythm and sleep quality of nurses, nursing managers can take personalized measures to reduce their level of job burnout.