摘要：

目的 调查ICU患者替代决策者决策疲劳现状并分析其影响因素。 方法 采用便利抽样法，2022年1月—10月，选取山东省某三级甲等医院314名ICU患者的替代决策者为调查对象。使用一般资料调查表、决策疲劳量表、决策准备量表、家庭成员决策自我效能量表、社会支持评定量表进行调查。 结果 ICU患者的替代决策者决策疲劳量表得分为（12.33±4.88）分。多重线性回归分析结果显示，患者入住ICU天数、家庭人均月收入、替代决策者性别、文化程度、职业状态、是否了解该疾病、决策准备度、决策自我效能及主观支持是决策疲劳的影响因素。 结论 ICU患者替代决策者决策疲劳处于中等水平；患者入住ICU天数较长、家庭人均月收入低、女性、文化程度高、在职、不了解该疾病的替代决策者的决策疲劳水平较高，提高决策准备度、决策自我效能感及主观支持水平有利于减轻替代决策者决策疲劳，改善其决策质量。

Abstract:

Objective To investigate the current status of decision fatigue of substitutive decision-makers in ICU patients，and to analyze its influencing factors. Methods By the convenient sampling method，314 substitutive decision-makers of ICU patients were selected from February to October 2022 in a tertiary hospital in Shandong. General information questionnaire，decision fatigue scale，preparation for decision making scale，family decision making self-efficacy scale，and social support rating scale were used for investigation. Results The score of decision fatigue scale for substitutive decision-makers in ICU patients was（12.33±4.88）. The results of multiple linear regression analysis showed that the number of days patients stayed in the ICU，gender of the substitutive decision-makers，education level，per capita monthly income of the family，occupational status，whether they knew about the disease，decision-making readiness，decision-making self-efficacy and subjective support were the influencing factors of decision fatigue. Conclusion The decision fatigue of substitutive decision-makers in ICU patients was at a middle level. Patients with long stay in ICU，female substitutive decision-makers，high education level，low per capita monthly income of families，being employed，and not knowing about the disease have a high level of decision fatigue tended to have a higher level of decision fatigue. The improvement of decision-making readiness，decision-making self-efficacy，and subjective support level is conducive to reducing the decision-making fatigue level of substitutive decision-makers and improving their decision-making quality.

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