目的 对住院胃癌患者，应用 NRS 2002 及 PG-SGA 及 BMI、TF 测定，了解 NRS 2002、PG-SGA 在胃癌营养筛 查评估中的作用，分析BMI、TF 等与NRS 2002、PG-SGA 的相关性。方法  采用连续入组法，以本院2015 年 1 月至2016 年 9 月住院的胃癌患者 136 例为研究对象，入院 24 小时内应用 NRS 2002 进行营养风险筛查、PG-SGA 进行营养状况评估， 同时测定其BMI、TF。结果  应用NRS 2002进行营养风险筛查，无营养风险（NRS 2002＜3分）的患者共64例（47%）， 有营养风险（NRS 2002 ≥ 3 分）的患者共 72 例（53%）；应用 PG-SGA 进行营养评估，营养良好（PG-SGA 0~1 分）的患 者共5 例（4%），可疑营养不良（PG-SGA 2~3 分）的患者共21 例（15%），中度营养不良（PG-SGA 4~8 分）的患者共 49 例（36%），重度营养不良（PG-SGA ≥ 9 分）的患者共 61 例（45%）。年龄均与 NRS 2002、PG-SGA 呈正相关，具有 统计学意义（P ＜ 0.01），而 TF、BMI、体重均与 NRS 2002、PG-SGA 呈负相关，具有统计学意义（P ＜ 0.05）；而身高 与NRS 2002、PG-SGA呈正相关，但无统计学意义（P＞0.05）；NRS 2002与PG-SGA呈正相关，有统计学意义（r=0.565， P ＜ 0.01）。结论  胃癌患者术前营养不良发生率高，营养风险亦较高，NRS 2002 及 PG-SGA、BMI、TF 等均有助于胃癌 患者的营养筛查与评估，联合应用可能更有利于胃癌患者的围术期营养治疗。

Objective To understand the application of nutrition risk screening 2002 (NRS 2002), patient-generated subjective global assessment (PG-SGA), body mass index (BMI), serum transferrin (TF) in nutritional screening and assessment of the hospitalized patients with gastric cancer and analyze the correlation between them. Methods 136 patients with gastric cancer hospitalized in our hospital from January 2015 to September 2016 were consecutively enrolled in this study. Nutritional risk screening by NRS 2002 and assessment of nutritional status by PG-SGA were performed in their first 24 hours in hospital. Their BMI, TF were measured at the same time. Results There were 64 patients (47%) of non nutritional risk (NRS 2002<3), while 72 patients (53%) of nutritional risk (NRS 2002≥3). There were 5 patients (4%) of eutrophy (PG-SGA 0~1), 21 patients (15%) of suspected malnutrition (PG-SGA 2~3) and 49 patients (36%) of moderate malnutrition (PG-SGA 4~8) while there were 61 patients (45%) of severe malnutrition (PG-SGA≥9). The age was positively correlated with NRS 2002 and PG-SGA (P<0.01). The TF, BMI, body weight were negatively correlated with NRS 2002 and PG-SGA (P<0.05), and the body height was not correlated with NRS 2002 and PGSGA (P>0.05). There was a significant correlation between NRS 2002 and PG-SGA score (r= 0.565, P<0.01). Conclusions There is high incidence of preoperative malnutrition and nutritional risk in patients with gastric cancer. NRS 2002, PG-SGA and BMI, TF can be beneficial for the overall assessment of nutritional status and the analysis of nutritional risk for patients with gastric cancer. The combination of them may be more helpful in perioperative nutritional treatment in patients with gastric cancer.