营养不良在恶性肿瘤放疗患者中发生率高,降低治疗疗效,增加治疗副反应,因此应该对放疗患者常规进行营养风险筛查(推荐采用NRS 2002 量表)和营养评估(推荐采用PG-SGA 量表)。恶性肿瘤放疗患者在“围放疗期”需要进行全程营养管理。放疗前需根据PG-SGA 评分,放疗中需根据PG-SGA 评分和RTOG 急性放射损伤分级,放疗后需根据 PG-SGA 评分和RTOG 晚期放射损伤分级,规范化、个体化选择营养治疗方式。营养治疗方式遵循“五阶梯模式”。肠内 营养途径选择遵循“四阶梯模式”。当患者无法通过肠内营养获得足够的营养需要或出现严重放射性黏膜炎、放射性肠炎 或肠功能衰竭时,推荐及时联合部分或全肠外营养。恶性肿瘤放疗患者能量目标量推荐为25~30kcal/(kg·d)。在放疗过程中, 患者能量需求受到肿瘤负荷、应激状态和急性放射损伤的影响而变化,因此需要个体化给予并进行动态调整。恶性肿瘤放 疗患者推荐提高蛋白质摄入量,对于一般患者推荐 1.2~1.5g/(kg·d),对于严重营养不良患者,推荐 1.5~2.0g/(kg·d),对于并 发恶液质的患者可提高到 2.0g/(kg·d)。
Abstract: The incidence of malnutrition was high in cancer patients receiving radiotherapy. Malnutrition may reduce the antitumor effect and increase the radiotherapy adverse reactions. NRS 2002 is recommended for nutritional risk screening, and PG-SGA is recommended for nutritional assessment. The cancer patients receiving radiotherapy should carry out whole-process nutrition management during the peri-radiation period. We should correctly assess the nutritional status of patients using PG-SGA before, during and after radiotherapy and acute radiation injury during and after radiotherapy according to RTOG criteria. Then, we can select the standardized and individualized nutrition treatment method according to the assessment result. Nutritional therapy should follow the "five-stage model". Enteral nutrition access should follow the "four-stage model". Only when the patient is unable to obtain adequate nutritional needs through enteral nutrition or the presence of severe radioactive mucositis, radiation enteritis or intestinal failure, it is recommended to combine partal or whole enteral nutrition in time. The recommended amount of energy intake for radiotherapy patients with malignant tumor is 25~30kcal/(kg·d). It should be adjusted dynamically according to tumor burden, stress state and acute radiation injury during radiotherapy. Cancer patients receiving radiotherapy are recommend higher protein intake, and 1.5~ 2.0g/(kg·d) is recommended for patients with severe malnutrition. For patients with cachexia, it can be increased to 2.0g/(kg·d).