摘要老年患者发生重症疾病时更容易出现营养不良、免疫功能低下等不良情况，如何改善老年重症患者营养状态是目前一个重要难题，尚无相关共识。为了进一步规范老年重症患者的营养支持策略，由中国老年医学学会和中国老年医学学会重症医学分会牵头，组织重症医学、老年医学、循证医学及临床营养领域的专家，对国内外老年重症患者肠内营养支持治疗领域出现的新证据进行总结，共同制定了《中国老年重症患者肠内营养支持专家共识（2022）》。本共识专家组采用GRADE系统推荐原则及改良的德尔菲法，从肠内营养时机、剂量/剂型、营养支持相关并发症、围手术期肠内营养支持等方面对共识的条目进行审阅，最终形成了19条推荐意见，为老年重症患者肠内营养支持治疗提供了参考依据。

abstractsElderly patients with critical illness are more prone to have malnutrition and impaired immune function. How to improve the nutritional status of elderly patients with critical illness is important. At present, no consensus has been reached. In order to standardize the nutritional support strategies for elderly patients with critical illness, Chinese Geriatric Society and Critical Care Medicine Division of Chinese Geriatric Society took the lead in organizing experts in the fields of critical medicine, geriatrics, evidence-based medicine and clinical nutrition to summarize the new evidence in the field of enteral nutrition support for elderly patients with severe illness at home and abroad, and jointly formulated the Expert consensus on enteral nutrition support for elderly patients with critical illness in China (2022). In the consensus, the GRADE recommendation principle and improved Delphi method were adopted to formed 19 recommendations, including the timing, the dose and dosage of enteral nutrition, nutrition support-related complications, perioperative enteral nutrition support, to provide reference basis for enteral nutrition support treatment of elderly severe patients.