Article(id=1322929657053590064, tenantId=1146029695717560320, journalId=1220038315760373764, issueId=1322929547464815391, articleNumber=null, orderNo=null, doi=10.12102/j.issn.1009-6493.2026.14.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753804800000, receivedDateStr=2025-07-30, revisedDate=1776614400000, revisedDateStr=2026-04-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1793340609086, onlineDateStr=2026-10-30, pubDate=1784908800000, pubDateStr=2026-07-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793340609086, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793340609086, creator=13701087609, updateTime=1793340609086, updator=13701087609, issue=Issue{id=1322929547464815391, tenantId=1146029695717560320, journalId=1220038315760373764, year='2026', volume='40', issue='14', pageStart='2385', pageEnd='2576', issueExtLink='null', onlineDate='null', pubDate='1784908800000', pubDateStr='2026-07-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793340582958, creator='13701087609', updateTime=1793343111003, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322940150912790807, tenantId=1146029695717560320, journalId=1220038315760373764, issueId=1322929547464815391, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322940150912790808, tenantId=1146029695717560320, journalId=1220038315760373764, issueId=1322929547464815391, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2393, endPage=2403, ext={EN=ArticleExt(id=1322929658899083825, articleId=1322929657053590064, tenantId=1146029695717560320, journalId=1220038315760373764, language=EN, title=Correlation between 28-day mortality and the geriatric nutritional risk index in elderly patients with bacterial pneumonia, columnId=1220689484526572183, journalTitle=Chinese Nursing Research, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Objective

To investigate the correlation between adverse outcomes and the Geriatric Nutritional Risk Index(GNRI) in elderly patients with bacterial pneumonia.

Methods

Based on the MIMIC-Ⅳ 2.2 database,a total of 2 903 elderly patients with bacterial pneumonia were selected as the study subjects. Nutritional risk was classified into four grades according to GNRI.The relationship between 28-day mortality and GNRI in elderly patients with bacterial pneumonia was elucidated using restricted cubic splines(RCS),Kaplan-Meier regression analysis,Cox proportional hazards regression models,and subgroup analysis.The Boruta algorithm was employed to rank the importance of predictors for 28-day mortality.

Results

A non-linear negative correlation was observed between 28-day mortality and GNRI in elderly patients with bacterial pneumonia(P<0.001).GNRI value of 90.281 was identified as the critical point for clinical intervention.An elevated GNRI was associated with reduced mortality.The results of the Cox proportional hazards regression model indicated that GNRI was a significant predictor of 28-day mortality(P<0.001).Subgroup analysis revealed that factors such as demographic characteristics and comorbidities did not have statistically significant impact on the relationship between 28-day mortality and GNRI(P>0.05).GNRI was identified as one of the key influencing factors for 28-day mortality.

Conclusions

GNRI has demonstrated predictive value for short-term mortality in elderly patients with bacterial pneumonia.Nutritional support for elderly patients with bacterial pneumonia during treatment may reduce their mortality.

, authors=Yu WANG1, Liangzhen XIE2, Jintao XU2, Dongmei WANG2, authorsList=Yu WANG, Liangzhen XIE, Jintao XU, Dongmei WANG, authorCompany=null, correspAuthors=Dongmei WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322929660098654778, articleId=1322929657053590064, tenantId=1146029695717560320, journalId=1220038315760373764, language=CN, title=老年细菌性肺炎病人28 d病死率与老年营养风险指数的相关性, columnId=1220689484681761433, journalTitle=护理研究, columnName=科研论著, runingTitle=null, highlight=null, articleAbstract=
目的

研究老年细菌性肺炎病人不良结局与老年营养风险指数(GNRI)的相关性。

方法

基于MIMIC-Ⅳ 2.2数据库选取2 903例老年细菌性肺炎病人作为研究对象。基于GNRI将营养风险分为4个等级。采用限制性立方样条法(RCS)、Kaplan-Meier回归分析、Cox比例风险回归模型、亚组分析阐明老年细菌性肺炎病人28 d病死率与GNRI的关系,采用Boruta算法对28 d死亡率预测变量进行重要性排序。

结果

老年细菌性肺炎病人28 d死亡率与GNRI呈非线性负相关关系(P<0.001),GNRI=90.281为临床干预临界点。GNRI升高与死亡率降低相关。Cox比例风险回归模型结果显示,GNRI为病人28 d死亡率的重要预测因子(P<0.001)。亚组分析显示,人口统计学资料、合并症等因素对28 d死亡率与GNRI间关系影响不明显(P>0.05)。GNRI为28 d死亡率的关键影响因素之一。

结论

GNRI对老年细菌性肺炎病人短期死亡率具有一定预测价值,治疗期间补充营养可能降低死亡率。

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王雨,护士,硕士研究生

, correspAuthorsNote=
王东梅,E-mail:
WANG Dongmei, E-mail:
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pneumonia for mechanically ventilated icu patients:a systematic review and network Meta-analysis of randomized controlled trials[J].Frontiers in Nutrition,2022,9:919156., articleTitle=Probiotic supplementation prevents the development of ventilator-associated pneumonia for mechanically ventilated icu patients:a systematic review and network Meta-analysis of randomized controlled trials, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1322929660358701627, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322929657053590064, xref=1, ext=[AuthorCompanyExt(id=1322929660367090236, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322929657053590064, companyId=1322929660358701627, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Heilongjiang University of Chinese Medicine, Heilongjiang 150040 China), AuthorCompanyExt(id=1322929660375478845, tenantId=1146029695717560320, 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Comparison of baseline characteristics and clinical outcomes in elderly patients with bacterial pneumonia at different nutritional risk grades

, figureFileSmall=null, figureFileBig=null, tableContent=
变量总计(n=2 903)无营养风险(n=531)低营养风险(n=665)中营养风险(n=1 158)高营养风险(n=549)P
年龄(岁)76.00(71.00,84.00)75.00(70.00,82.00)77.00(71.00,84.00)77.00(71.00,84.00)76.00(71.00,84.00)0.003
体重(kg)76.30(63.70,90.50)80.93(69.10,95.50)79.40(67.97,94.00)75.80(63.80,89.50)66.30(54.00,82.65)<0.001
身高(cm)168.00(160.00,175.00)170.00(160.00,178.00)168.00(160.00,175.00)168.00(160.00,175.00)168.00(157.00,175.00)0.023
BMI(kg/m²)26.80(23.13,31.53)27.84(24.40,32.74)28.33(24.53,32.80)26.82(23.24,31.05)23.63(19.41,28.41)<0.001
性别[例(%)] 女1 252(43.13)213(40.11)287(43.16)508(43.87)244(44.44)0.455
男1 651(56.87)318(59.89)378(56.84)650(56.13)305(55.56)
心率(/min)88.00(76.00,103.00)83.00(72.00,96.00)87.00(75.00,101.00)89.00(76.00,105.00)93.00(81.00,109.00)<0.001
呼吸频率(/min)20.00(16.00,25.00)19.00(15.00,24.00)20.00(16.00,25.00)20.00(16.00,25.00)21.00(17.00,26.00)<0.001
血氧饱和度(%)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)0.965
体温(℃)36.8(36.4,37.2)36.8(36.4,37.2)36.8(36.5,37.2)36.8(36.4,37.2)36.8(36.4,37.2)0.488
无创血压平均值(mmHg)79.00(68.00,91.00)82.00(71.00,93.00)80.00(70.00,93.00)79.00(67.00,91.00)77.00(65.00,89.00)<0.001
高血压[例(%)] 无1 784(61.45)317(59.70)407(61.20)730(63.04)330(60.11)0.502
有1 119(38.55)214(40.30)258(38.80)428(36.96)219(39.89)
脑卒中[例(%)] 无2 593(89.32)479(90.21)585(87.97)1 037(89.55)492(89.62)0.610
有310(10.68)52(9.79)80(12.03)121(10.45)57(10.38)
急性肾损伤[例(%)] 无1 300(44.78)265(49.91)294(44.21)512(44.21)229(41.71)0.047
有1 603(55.22)266(50.09)371(55.79)646(55.79)320(58.29)
肝硬化[例(%)] 无2 752(94.80)491(92.47)631(94.89)1 112(96.03)518(94.35)0.022
有151(5.20)40(7.53)34(5.11)46(3.97)31(5.65)
慢性肾衰竭[例(%)] 无2 043(70.38)375(70.62)450(67.67)804(69.43)414(75.41)0.023
有860(29.62)156(29.38)215(32.33)354(30.57)135(24.59)
恶性肿瘤[例(%)] 无2 265(78.02)443(83.43)514(77.29)889(76.77)419(76.32)0.011
有638(21.98)88(16.57)151(22.71)269(23.23)130(23.68)
2型糖尿病[例(%)] 无1 864(64.21)328(61.77)421(63.31)732(63.21)383(69.76)0.024
有1 039(35.79)203(38.23)244(36.69)426(36.79)166(30.24)
1型糖尿病[例(%)] 无2 887(99.45)530(99.81)659(99.10)1 150(99.31)548(99.82)0.208
有16(0.55)1(0.19)6(0.90)8(0.69)1(0.18)
高脂血症[例(%)] 无1 664(57.32)257(48.40)371(55.79)665(57.43)371(67.58)<0.001
有1 239(42.68)274(51.60)294(44.21)493(42.57)178(32.42)
慢性支气管炎[例(%)] 无2 338(80.54)408(76.84)530(79.70)941(81.26)459(83.61)0.035
有565(19.46)123(23.16)135(20.30)217(18.74)90(16.39)
心力衰竭[例(%)] 无1 489(51.29)249(46.89)297(44.66)596(51.47)347(63.21)<0.001
有1 414(48.71)282(53.11)368(55.34)562(48.53)202(36.79)
心肌梗死[例(%)] 无2 538(87.43)456(85.88)575(86.47)1 013(87.48)494(89.98)0.173
有365(12.57)75(14.12)90(13.53)145(12.52)55(10.02)
慢性阻塞性肺疾病[例(%)] 无2 034(70.07)360(67.80)467(70.23)814(70.29)393(71.58)0.584
有869(29.93)171(32.20)198(29.77)344(29.71)156(28.42)
脓毒症[例(%)] 无462(15.91)108(20.34)121(18.20)169(14.59)64(11.66)<0.001
有2 441(84.09)423(79.66)544(81.80)989(85.41)485(88.34)
动脉血二氧化碳分压(mmHg)25.00(22.00,29.00)26.00(23.00,29.00)25.00(22.00,29.00)25.00(22.00,29.00)25.00(21.00,29.00)<0.001
血清乳酸(mmol/L)1.60(1.10,2.50)1.60(1.10,2.30)1.70(1.10,2.60)1.60(1.10,2.40)1.80(1.20,2.60)0.033
动脉血二氧化碳(mmol/L)43.00(36.00,52.00)43.00(37.00,52.00)43.00(36.00,52.00)43.00(37.00,52.00)43.00(35.00,51.00)0.463
pH值7.37(7.30,7.42)7.37(7.31,7.42)7.37(7.30,7.43)7.36(7.29,7.42)7.36(7.28,7.42)0.014
动脉血氧分压(mmHg)81.00(49.00,140.00)93.00(54.00,182.00)83.00(49.00,146.00)79.00(49.00,128.00)78.00(48.00,129.00)<0.001
红细胞比容(%)31.80(27.20,36.60)34.80(29.20,38.80)32.80(27.80,37.10)31.30(27.20,35.50)29.90(26.00,33.90)<0.001
血红蛋白(g/L)102(87,118)112(94,128)106(89,121)101(86,115)95(81,108)<0.001
血小板计数(×109/L)196.00(138.00,276.00)189.00(139.00,250.00)190.00(143.00,261.00)199.00(135.00,278.00)218.00(136.00,328.00)0.001
红细胞体积分布宽度(%)15.10(14.00,16.80)14.50(13.50,16.30)14.90(13.80,16.40)15.20(14.10,17.00)15.50(14.50,17.20)<0.001
红细胞计数(×1012/L)3.47(2.95,4.00)3.79(3.17,4.29)3.58(3.03,4.06)3.40(2.94,3.91)3.25(2.76,3.70)<0.001
白细胞计数(×109/L)12.10(8.50,16.60)11.70(8.70,15.30)12.10(8.40,16.00)11.95(8.50,16.40)13.00(8.20,18.60)0.022
血清白蛋白(g/L)30(26,34)37(36,39)33(31,34)28(26,29)22(20,23)<0.001
阴离子间隙(mmol/L)14.00(12.00,17.00)15.00(13.00,18.00)15.00(12.00,17.00)14.00(12.00,17.00)14.00(12.00,16.00)<0.001
血钙(mmol/L)2.07(1.95,2.20)2.17(2.05,2.27)2.12(2.02,2.22)2.05(1.95,2.17)1.97(1.85,2.10)<0.001
血氯(mmol/L)103.00(99.00,107.00)102.00(98.00,106.00)102.00(98.00,106.00)104.00(99.00,108.00)105.00(100.00,110.00)<0.001
血糖(mmol/L)7.56(6.06,10.00)7.61(6.28,10.06)7.67(6.17,10.06)7.58(6.00,10.11)7.39(5.67,9.67)0.031
血钾(mmol/L)4.20(3.80,4.70)4.20(3.90,4.70)4.20(3.80,4.70)4.20(3.80,4.70)4.20(3.70,4.70)0.130
血钠(mmol/L)139.00(136.00,142.00)138.00(135.00,141.00)139.00(135.00,141.00)139.00(136.00,142.00)139.00(136.00,143.00)0.003
SOFA评分(分)6.00(4.00,9.00)5.00(3.00,8.00)6.00(3.00,8.00)6.00(4.00,9.00)7.00(4.00,10.00)<0.001
APSⅢ评分(分)50.00(39.00,65.00)43.00(33.00,58.00)47.00(38.00,59.00)52.00(40.00,66.00)60.00(47.00,77.00)<0.001
SIRS评分(分)3.00(2.00,3.00)3.00(2.00,3.00)3.00(2.00,3.00)3.00(2.00,3.00)3.00(3.00,4.00)<0.001
SAPSⅡ评分(分)43.00(36.00,53.00)39.00(32.00,47.00)42.00(35.00,51.00)44.00(37.00,54.00)49.00(40.00,58.00)<0.001
OASIS评分(分)36.00(30.00,42.00)34.00(28.00,40.00)34.00(29.00,40.00)37.00(31.00,42.00)39.00(33.00,45.00)<0.001
GCS评分(分)15.00(13.00,15.00)15.00(13.00,15.00)15.00(14.00,15.00)15.00(13.00,15.00)15.00(13.00,15.00)0.215
CCI(分)7.00(5.00,8.00)6.00(5.00,8.00)7.00(5.00,8.00)7.00(5.00,9.00)6.00(5.00,8.00)0.017
GNRI90.28(84.33,96.24)102.19(99.22,105.17)94.75(93.26,96.24)87.30(85.81,90.28)77.85(73.90,79.86)<0.001
机械通气[例(%)] 否175(6.03)25(4.71)38(5.71)83(7.17)29(5.28)0.176
是2 728(93.97)506(95.29)627(94.29)1 075(92.83)520(94.72)
应用肾毒性药物[例(%)] 否467(16.09)84(15.82)107(16.09)191(16.49)85(15.48)0.956
是2 436(83.91)447(84.18)558(83.91)967(83.51)464(84.52)
应用抗生素[例(%)] 否26(0.90)5(0.94)4(0.60)10(0.86)7(1.28)0.667
是2 877(99.10)526(99.06)661(99.40)1 148(99.14)542(98.72)
28 d死亡[例(%)] 否2 078(71.58)414(77.97)490(73.68)841(72.63)333(60.66)<0.001
是825(28.42)117(22.03)175(26.32)317(27.37)216(39.34)
14 d死亡[例(%)] 否2 289(78.85)439(82.67)530(79.70)916(79.10)404(73.59)0.003
是614(21.15)92(17.33)135(20.30)242(20.90)145(26.41)
7 d死亡[例(%)] 否2 575(88.70)482(90.77)602(90.53)1 027(88.69)464(84.52)0.003
是328(11.30)49(9.23)63(9.47)131(11.31)85(15.48)
入住ICU时间(d)28.00(18.65,28.00)28.00(28.00,28.00)28.00(20.48,28.00)28.00(20.32,28.00)28.00(13.32,28.00)<0.001
), ArticleFig(id=1322929664980824678, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322929657053590064, language=CN, label=表1, caption=

不同营养风险等级的老年细菌性肺炎病人基线特征及临床结局比较

, figureFileSmall=null, figureFileBig=null, tableContent=
变量总计(n=2 903)无营养风险(n=531)低营养风险(n=665)中营养风险(n=1 158)高营养风险(n=549)P
年龄(岁)76.00(71.00,84.00)75.00(70.00,82.00)77.00(71.00,84.00)77.00(71.00,84.00)76.00(71.00,84.00)0.003
体重(kg)76.30(63.70,90.50)80.93(69.10,95.50)79.40(67.97,94.00)75.80(63.80,89.50)66.30(54.00,82.65)<0.001
身高(cm)168.00(160.00,175.00)170.00(160.00,178.00)168.00(160.00,175.00)168.00(160.00,175.00)168.00(157.00,175.00)0.023
BMI(kg/m²)26.80(23.13,31.53)27.84(24.40,32.74)28.33(24.53,32.80)26.82(23.24,31.05)23.63(19.41,28.41)<0.001
性别[例(%)] 女1 252(43.13)213(40.11)287(43.16)508(43.87)244(44.44)0.455
男1 651(56.87)318(59.89)378(56.84)650(56.13)305(55.56)
心率(/min)88.00(76.00,103.00)83.00(72.00,96.00)87.00(75.00,101.00)89.00(76.00,105.00)93.00(81.00,109.00)<0.001
呼吸频率(/min)20.00(16.00,25.00)19.00(15.00,24.00)20.00(16.00,25.00)20.00(16.00,25.00)21.00(17.00,26.00)<0.001
血氧饱和度(%)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)97.00(94.00,100.00)0.965
体温(℃)36.8(36.4,37.2)36.8(36.4,37.2)36.8(36.5,37.2)36.8(36.4,37.2)36.8(36.4,37.2)0.488
无创血压平均值(mmHg)79.00(68.00,91.00)82.00(71.00,93.00)80.00(70.00,93.00)79.00(67.00,91.00)77.00(65.00,89.00)<0.001
高血压[例(%)] 无1 784(61.45)317(59.70)407(61.20)730(63.04)330(60.11)0.502
有1 119(38.55)214(40.30)258(38.80)428(36.96)219(39.89)
脑卒中[例(%)] 无2 593(89.32)479(90.21)585(87.97)1 037(89.55)492(89.62)0.610
有310(10.68)52(9.79)80(12.03)121(10.45)57(10.38)
急性肾损伤[例(%)] 无1 300(44.78)265(49.91)294(44.21)512(44.21)229(41.71)0.047
有1 603(55.22)266(50.09)371(55.79)646(55.79)320(58.29)
肝硬化[例(%)] 无2 752(94.80)491(92.47)631(94.89)1 112(96.03)518(94.35)0.022
有151(5.20)40(7.53)34(5.11)46(3.97)31(5.65)
慢性肾衰竭[例(%)] 无2 043(70.38)375(70.62)450(67.67)804(69.43)414(75.41)0.023
有860(29.62)156(29.38)215(32.33)354(30.57)135(24.59)
恶性肿瘤[例(%)] 无2 265(78.02)443(83.43)514(77.29)889(76.77)419(76.32)0.011
有638(21.98)88(16.57)151(22.71)269(23.23)130(23.68)
2型糖尿病[例(%)] 无1 864(64.21)328(61.77)421(63.31)732(63.21)383(69.76)0.024
有1 039(35.79)203(38.23)244(36.69)426(36.79)166(30.24)
1型糖尿病[例(%)] 无2 887(99.45)530(99.81)659(99.10)1 150(99.31)548(99.82)0.208
有16(0.55)1(0.19)6(0.90)8(0.69)1(0.18)
高脂血症[例(%)] 无1 664(57.32)257(48.40)371(55.79)665(57.43)371(67.58)<0.001
有1 239(42.68)274(51.60)294(44.21)493(42.57)178(32.42)
慢性支气管炎[例(%)] 无2 338(80.54)408(76.84)530(79.70)941(81.26)459(83.61)0.035
有565(19.46)123(23.16)135(20.30)217(18.74)90(16.39)
心力衰竭[例(%)] 无1 489(51.29)249(46.89)297(44.66)596(51.47)347(63.21)<0.001
有1 414(48.71)282(53.11)368(55.34)562(48.53)202(36.79)
心肌梗死[例(%)] 无2 538(87.43)456(85.88)575(86.47)1 013(87.48)494(89.98)0.173
有365(12.57)75(14.12)90(13.53)145(12.52)55(10.02)
慢性阻塞性肺疾病[例(%)] 无2 034(70.07)360(67.80)467(70.23)814(70.29)393(71.58)0.584
有869(29.93)171(32.20)198(29.77)344(29.71)156(28.42)
脓毒症[例(%)] 无462(15.91)108(20.34)121(18.20)169(14.59)64(11.66)<0.001
有2 441(84.09)423(79.66)544(81.80)989(85.41)485(88.34)
动脉血二氧化碳分压(mmHg)25.00(22.00,29.00)26.00(23.00,29.00)25.00(22.00,29.00)25.00(22.00,29.00)25.00(21.00,29.00)<0.001
血清乳酸(mmol/L)1.60(1.10,2.50)1.60(1.10,2.30)1.70(1.10,2.60)1.60(1.10,2.40)1.80(1.20,2.60)0.033
动脉血二氧化碳(mmol/L)43.00(36.00,52.00)43.00(37.00,52.00)43.00(36.00,52.00)43.00(37.00,52.00)43.00(35.00,51.00)0.463
pH值7.37(7.30,7.42)7.37(7.31,7.42)7.37(7.30,7.43)7.36(7.29,7.42)7.36(7.28,7.42)0.014
动脉血氧分压(mmHg)81.00(49.00,140.00)93.00(54.00,182.00)83.00(49.00,146.00)79.00(49.00,128.00)78.00(48.00,129.00)<0.001
红细胞比容(%)31.80(27.20,36.60)34.80(29.20,38.80)32.80(27.80,37.10)31.30(27.20,35.50)29.90(26.00,33.90)<0.001
血红蛋白(g/L)102(87,118)112(94,128)106(89,121)101(86,115)95(81,108)<0.001
血小板计数(×109/L)196.00(138.00,276.00)189.00(139.00,250.00)190.00(143.00,261.00)199.00(135.00,278.00)218.00(136.00,328.00)0.001
红细胞体积分布宽度(%)15.10(14.00,16.80)14.50(13.50,16.30)14.90(13.80,16.40)15.20(14.10,17.00)15.50(14.50,17.20)<0.001
红细胞计数(×1012/L)3.47(2.95,4.00)3.79(3.17,4.29)3.58(3.03,4.06)3.40(2.94,3.91)3.25(2.76,3.70)<0.001
白细胞计数(×109/L)12.10(8.50,16.60)11.70(8.70,15.30)12.10(8.40,16.00)11.95(8.50,16.40)13.00(8.20,18.60)0.022
血清白蛋白(g/L)30(26,34)37(36,39)33(31,34)28(26,29)22(20,23)<0.001
阴离子间隙(mmol/L)14.00(12.00,17.00)15.00(13.00,18.00)15.00(12.00,17.00)14.00(12.00,17.00)14.00(12.00,16.00)<0.001
血钙(mmol/L)2.07(1.95,2.20)2.17(2.05,2.27)2.12(2.02,2.22)2.05(1.95,2.17)1.97(1.85,2.10)<0.001
血氯(mmol/L)103.00(99.00,107.00)102.00(98.00,106.00)102.00(98.00,106.00)104.00(99.00,108.00)105.00(100.00,110.00)<0.001
血糖(mmol/L)7.56(6.06,10.00)7.61(6.28,10.06)7.67(6.17,10.06)7.58(6.00,10.11)7.39(5.67,9.67)0.031
血钾(mmol/L)4.20(3.80,4.70)4.20(3.90,4.70)4.20(3.80,4.70)4.20(3.80,4.70)4.20(3.70,4.70)0.130
血钠(mmol/L)139.00(136.00,142.00)138.00(135.00,141.00)139.00(135.00,141.00)139.00(136.00,142.00)139.00(136.00,143.00)0.003
SOFA评分(分)6.00(4.00,9.00)5.00(3.00,8.00)6.00(3.00,8.00)6.00(4.00,9.00)7.00(4.00,10.00)<0.001
APSⅢ评分(分)50.00(39.00,65.00)43.00(33.00,58.00)47.00(38.00,59.00)52.00(40.00,66.00)60.00(47.00,77.00)<0.001
SIRS评分(分)3.00(2.00,3.00)3.00(2.00,3.00)3.00(2.00,3.00)3.00(2.00,3.00)3.00(3.00,4.00)<0.001
SAPSⅡ评分(分)43.00(36.00,53.00)39.00(32.00,47.00)42.00(35.00,51.00)44.00(37.00,54.00)49.00(40.00,58.00)<0.001
OASIS评分(分)36.00(30.00,42.00)34.00(28.00,40.00)34.00(29.00,40.00)37.00(31.00,42.00)39.00(33.00,45.00)<0.001
GCS评分(分)15.00(13.00,15.00)15.00(13.00,15.00)15.00(14.00,15.00)15.00(13.00,15.00)15.00(13.00,15.00)0.215
CCI(分)7.00(5.00,8.00)6.00(5.00,8.00)7.00(5.00,8.00)7.00(5.00,9.00)6.00(5.00,8.00)0.017
GNRI90.28(84.33,96.24)102.19(99.22,105.17)94.75(93.26,96.24)87.30(85.81,90.28)77.85(73.90,79.86)<0.001
机械通气[例(%)] 否175(6.03)25(4.71)38(5.71)83(7.17)29(5.28)0.176
是2 728(93.97)506(95.29)627(94.29)1 075(92.83)520(94.72)
应用肾毒性药物[例(%)] 否467(16.09)84(15.82)107(16.09)191(16.49)85(15.48)0.956
是2 436(83.91)447(84.18)558(83.91)967(83.51)464(84.52)
应用抗生素[例(%)] 否26(0.90)5(0.94)4(0.60)10(0.86)7(1.28)0.667
是2 877(99.10)526(99.06)661(99.40)1 148(99.14)542(98.72)
28 d死亡[例(%)] 否2 078(71.58)414(77.97)490(73.68)841(72.63)333(60.66)<0.001
是825(28.42)117(22.03)175(26.32)317(27.37)216(39.34)
14 d死亡[例(%)] 否2 289(78.85)439(82.67)530(79.70)916(79.10)404(73.59)0.003
是614(21.15)92(17.33)135(20.30)242(20.90)145(26.41)
7 d死亡[例(%)] 否2 575(88.70)482(90.77)602(90.53)1 027(88.69)464(84.52)0.003
是328(11.30)49(9.23)63(9.47)131(11.31)85(15.48)
入住ICU时间(d)28.00(18.65,28.00)28.00(28.00,28.00)28.00(20.48,28.00)28.00(20.32,28.00)28.00(13.32,28.00)<0.001
), ArticleFig(id=1322929665098265191, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322929657053590064, language=EN, label=Table 2, caption=

Cox proportional hazards regression model for 28-day mortality and GNRI

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模型特征HR值95%CIP
模型1无营养风险
低营养风险1.223[0.968,1.546]0.092
中营养风险1.281[1.036,1.583]0.022
高营养风险1.955[1.561,2.448]<0.001
模型2无营养风险
低营养风险1.200[0.949,1.517]0.128
中营养风险1.258[1.018,1.556]0.034
高营养风险1.922[1.534,2.408]<0.001
模型3无营养风险
低营养风险1.120[0.882,1.421]0.353
中营养风险1.137[0.909,1.422]0.262
高营养风险1.656[1.285,2.135]<0.001
), ArticleFig(id=1322929665207317096, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322929657053590064, language=CN, label=表2, caption=

28 d死亡率与GNRI的Cox比例风险回归模型

, figureFileSmall=null, figureFileBig=null, tableContent=
模型特征HR值95%CIP
模型1无营养风险
低营养风险1.223[0.968,1.546]0.092
中营养风险1.281[1.036,1.583]0.022
高营养风险1.955[1.561,2.448]<0.001
模型2无营养风险
低营养风险1.200[0.949,1.517]0.128
中营养风险1.258[1.018,1.556]0.034
高营养风险1.922[1.534,2.408]<0.001
模型3无营养风险
低营养风险1.120[0.882,1.421]0.353
中营养风险1.137[0.909,1.422]0.262
高营养风险1.656[1.285,2.135]<0.001
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老年细菌性肺炎病人28 d病死率与老年营养风险指数的相关性
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王雨 1 , 谢梁震 2 , 徐金涛 2 , 王东梅 2, *, *
护理研究 | 科研论著 2026,40(14): 2393-2403
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护理研究 |科研论著 2026 , 40 (14) : 2393 -2403
老年细菌性肺炎病人28 d病死率与老年营养风险指数的相关性
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王雨1, 谢梁震2, 徐金涛2, 王东梅2, *, *
作者信息
  • 1黑龙江中医药大学,黑龙江 150040
  • 2黑龙江中医药大学附属第一医院
通讯作者:
王东梅,E-mail:
WANG Dongmei, E-mail:
作者简介:

王雨,护士,硕士研究生

Correlation between 28-day mortality and the geriatric nutritional risk index in elderly patients with bacterial pneumonia
Yu WANG1, Liangzhen XIE2, Jintao XU2, Dongmei WANG2
Affiliations
  • 1Heilongjiang University of Chinese Medicine, Heilongjiang 150040 China
  • 2The First Affiliated Hospital of Heilongjiang University of Chinese Medicine
出版时间: 2026-07-25 doi: 10.12102/j.issn.1009-6493.2026.14.002
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目的

研究老年细菌性肺炎病人不良结局与老年营养风险指数(GNRI)的相关性。

方法

基于MIMIC-Ⅳ 2.2数据库选取2 903例老年细菌性肺炎病人作为研究对象。基于GNRI将营养风险分为4个等级。采用限制性立方样条法(RCS)、Kaplan-Meier回归分析、Cox比例风险回归模型、亚组分析阐明老年细菌性肺炎病人28 d病死率与GNRI的关系,采用Boruta算法对28 d死亡率预测变量进行重要性排序。

结果

老年细菌性肺炎病人28 d死亡率与GNRI呈非线性负相关关系(P<0.001),GNRI=90.281为临床干预临界点。GNRI升高与死亡率降低相关。Cox比例风险回归模型结果显示,GNRI为病人28 d死亡率的重要预测因子(P<0.001)。亚组分析显示,人口统计学资料、合并症等因素对28 d死亡率与GNRI间关系影响不明显(P>0.05)。GNRI为28 d死亡率的关键影响因素之一。

结论

GNRI对老年细菌性肺炎病人短期死亡率具有一定预测价值,治疗期间补充营养可能降低死亡率。

老年营养风险指数  /  细菌性肺炎  /  28 d死亡率  /  相关性
Objective

To investigate the correlation between adverse outcomes and the Geriatric Nutritional Risk Index(GNRI) in elderly patients with bacterial pneumonia.

Methods

Based on the MIMIC-Ⅳ 2.2 database,a total of 2 903 elderly patients with bacterial pneumonia were selected as the study subjects. Nutritional risk was classified into four grades according to GNRI.The relationship between 28-day mortality and GNRI in elderly patients with bacterial pneumonia was elucidated using restricted cubic splines(RCS),Kaplan-Meier regression analysis,Cox proportional hazards regression models,and subgroup analysis.The Boruta algorithm was employed to rank the importance of predictors for 28-day mortality.

Results

A non-linear negative correlation was observed between 28-day mortality and GNRI in elderly patients with bacterial pneumonia(P<0.001).GNRI value of 90.281 was identified as the critical point for clinical intervention.An elevated GNRI was associated with reduced mortality.The results of the Cox proportional hazards regression model indicated that GNRI was a significant predictor of 28-day mortality(P<0.001).Subgroup analysis revealed that factors such as demographic characteristics and comorbidities did not have statistically significant impact on the relationship between 28-day mortality and GNRI(P>0.05).GNRI was identified as one of the key influencing factors for 28-day mortality.

Conclusions

GNRI has demonstrated predictive value for short-term mortality in elderly patients with bacterial pneumonia.Nutritional support for elderly patients with bacterial pneumonia during treatment may reduce their mortality.

geriatric nutritional risk index  /  bacterial pneumonia  /  28-day mortality  /  correlation
王雨, 谢梁震, 徐金涛, 王东梅. 老年细菌性肺炎病人28 d病死率与老年营养风险指数的相关性. 护理研究, 2026 , 40 (14) : 2393 -2403 . DOI: 10.12102/j.issn.1009-6493.2026.14.002
Yu WANG, Liangzhen XIE, Jintao XU, Dongmei WANG. Correlation between 28-day mortality and the geriatric nutritional risk index in elderly patients with bacterial pneumonia[J]. Chinese Nursing Research, 2026 , 40 (14) : 2393 -2403 . DOI: 10.12102/j.issn.1009-6493.2026.14.002
细菌性肺炎(bacterial pneumonia)是由细菌感染引起的肺部炎症性疾病,主要累及肺泡和终末气道,其病理特征包括肺组织充血、炎性细胞浸润以及肺泡内渗出物积聚,严重时可导致肺实变和呼吸功能受损[1]。常见的致病菌包括肺炎链球菌(streptococcuspneumoniae)、流感嗜血杆菌(haemophilusinfluenzae)、金黄色葡萄球菌(staphylococcusaureus)等[2-3]。社区获得性肺炎(community acquired pneumonia,CAP)是指在医院外环境中感染的肺炎,涵盖多种病原体(细菌、病毒等),细菌性肺炎是CAP的主要类型之一。已有研究结果显示,细菌性肺炎在老年人中的发病率高于其他年龄段,且随着年龄增长呈上升趋势,65岁以上非住院老年人的年发病率是65岁以下人群的4倍[4]。老年细菌性肺炎病人常合并急性肾损伤、脓毒症等严重并发症,住院期间死亡率较高,重症监护室(ICU)死亡率为39.7%,住院死亡率为47.6%[5-7],合并心血管疾病或营养不良的病人预后较差[8]。老年营养风险指数(GNRI)是一种基于体质指数(BMI)和血清白蛋白水平计算的营养评估工具,主要用于评估老年病人的营养风险及其与临床结局(如死亡率、并发症等)的关联[9],对急性肾损伤病人的研究结果显示,GNRI可用于预测其死亡风险,GNRI较低(≤88)与30 d全因死亡率升高显著相关[10-11];对老年ICU病人的研究结果显示,GNRI较低与拔管后不良结局(如再插管、ICU再入院、住院死亡)风险增加相关[12-13];对老年创伤病人的研究结果显示,GNRI<82与更高的并发症(如肺炎、深静脉血栓)发生率和住院时间延长相关[14-16];对老年重症肺炎病人的研究结果显示,GNRI越低,提示营养风险越高,≥65岁的重症CAP病人住院期间死亡率、机械通气需求及ICU住院时间均增高[17];对老年误吸性肺炎病人的研究结果显示,GNRI较低与较高的30 d死亡率和更长的住院时间相关[18]。尽管现有证据支持了GNRI在呼吸性疾病相关领域的预后价值,但研究设计存在局限,如样本量较小、缺乏针对不同类型肺炎(如细菌性肺炎、病毒性肺炎)的具体分析。本研究依托MIMIC-Ⅳ 2.2数据库整合的多中心临床数据资源,系统分析GNRI对老年细菌性肺炎病人28 d死亡率的预测效能,以期为病人的危重症管理提供循证依据。
MIMIC-Ⅳ 2.2数据库为电子健康记录数据集,包含2008—2019年马萨诸塞州波士顿贝斯以色列女执事医疗中心(BIDMC)中ICU收治的5万多例病人数据。BIDMC的机构审查委员会批准免除知情同意,并批准共享研究资源,此外,鉴于MIMIC-Ⅳ 2.2数据库数据为公开可得且不包含病人的身份信息,本研究可免除知情同意及伦理审批[19]。本研究已获得数据库访问权限(证书编号:69100823)。
共纳入2 903例老年细菌性肺炎病人。纳入标准:1)年龄≥65岁;2)以国际疾病分类(ICD)-9或ICD-10相应编码为诊断依据,诊断为细菌性肺炎;3)多次入院但首次入ICU,提取ICU第1次测量值。排除标准:1)入住ICU时间≤24 h;2)ICU住院期间身高数据缺失。
采用PostgreSQL结构化查询语言从MIMIC-Ⅳ 2.2数据库中提取数据。1)人口统计信息:年龄、性别、体重、身高、BMI;2)合并症:高血压、急性肾损伤、肝硬化、脑卒中、慢性肾衰竭、恶性肿瘤、1型糖尿病、2型糖尿病、高脂血症、慢性支气管炎、心力衰竭、心肌梗死、慢性阻塞性肺疾病、脓毒症;3)入住ICU第1天生命体征:心率、呼吸频率、血氧饱和度、体温、无创血压平均值;4)入住ICU第1天的实验室检查结果:动脉血二氧化碳分压、血清乳酸、动脉二氧化碳、pH值、动脉血氧分压、红细胞比容、血红蛋白、血小板计数、红细胞体积分布宽度、红细胞计数、白细胞计数、血清白蛋白、阴离子间隙、血钙、血氯、血糖、血钾、血钠;5)入住ICU第1天量表评分:序贯器官衰竭评估(Sequential Organ Failure Assessment,SOFA)评分、急性生理学评分Ⅲ(Acute Physiology Score Ⅲ,APSⅢ)评分、全身炎症反应综合征(systemic inflammatory response syndrome,SIRS)评分、简化急性生理学评分Ⅱ(Simplified Acute Physiology ScoreⅡ,SAPSⅡ)评分、牛津急性疾病严重程度评分(Oxford Acute Severity of Illness Score,OASIS)评分、格拉斯哥昏迷评分(Glasgow Coma Scale,GCS)评分、查尔森合并症指数(Charlson Comorbidity Index,CCI);6)ICU住院期间使用的药物:肾毒性药物、抗生素;7)ICU住院期间治疗干预:机械通气;8)预后:入住ICU时间、ICU的7 d死亡率、ICU的14 d死亡率、ICU的28 d死亡率。数据提取代码可于GitHub(https://github.com/MIT,LCP/mimic,iv)访问。
按照GNRI将老年营养风险分为4个等级,高营养风险(<82)、中营养风险(82~<92)、低营养风险(92~<98)和无营养风险(≥98)。主要结局为28 d死亡率,次要结局为7 d死亡率、14 d死亡率。
GNRI=14.89×血清白蛋白+41.7×(实际BMI/最佳BMI)。最佳BMI定义为22 kg/m2。病人的实际BMI等于或超过最佳值时,实际BMI与最佳BMI的比率计为1[20]。
排除缺失数据率超过25%的变量,对于缺失数据率低于25%的变量采用多重插补[21]。
采用R 4.4.1和SPSS 27.0进行统计分析。采用Shapiro-Wilk检验对定量资料进行正态性检验,不符合正态分布的定量资料以中位数(四分位数)[M(P25,P75)]表示,组间比较采用秩和检验;定性资料以频数及百分比(%)表示,组间比较采用χ2检验或Fisher精确概率法。采用限制性立方样条法(RCS)分析探讨GNRI与28 d死亡率的关系。采用Kaplan-Meier回归分析比较不同GNRI分级预后。采用Cox比例风险回归模型评估GNRI与28 d死亡率间的关联,以风险比(HR)和95%置信区间(95%CI)为效应量。绘制森林图,评估GNRI与不同亚组28 d死亡率间的关联,分析其交互作用。采用Boruta算法对28 d死亡率预测能力的重要特征排序。
根据GNRI水平将老年细菌性肺炎病人分为4个等级,2 903例老年细菌性肺炎病人中,无营养风险531例,低营养风险665例,中营养风险1 158例,高营养风险549例,其基线特征及临床结局比较结果见表1。
老年细菌性肺炎病人的28 d死亡率与GNRI间存在非线性负相关(P<0.001)。随着GNRI增加,死亡率呈下降趋势。当GNRI<90.281时,28 d死亡率较高,提示该值为临床干预临界点。见图1。
Kaplan-Meier曲线显示,高营养风险病人28 d生存概率最低(P<0.000 1)。见图2。
共构建3个模型,以无营养风险为参考组,逐步调整协变量,结果显示,模型1高营养风险的HR值(1.955)最高,风险最显著;模型2中中营养风险和高营养风险的HR值均比模型1略低,但趋势一致,高营养风险的HR值(1.922)仍最高;模型3中,仅高营养风险有统计学意义(HR=1.656,P<0.001)。病人基线特征在GNRI对老年细菌性肺炎病人预后的预测方面影响不明显。见表2。
基于临床常见的细菌性肺炎影响因素(年龄、高脂血症、心力衰竭、脓毒症、SOFA评分、OASIS评分)绘制森林图,结果显示,不同变量亚组间的交互作用均无统计学意义(均P>0.05),说明不同营养风险等级间的处理效应差异不明显。在OASIS评分亚组中,低评分组(<25分)有无营养风险间有统计学意义[HR=0.103,95%CI(0.018,0.607)],提示低评分(<25分)对老年细菌性肺炎病人28 d病死率具有保护作用,但其样本量(237例)较少,需进一步验证。见图3。
纳入所有研究变量,采用Boruta算法进行重要性排序,最终筛选出重要变量及影子变量,其中GNRI被确定为重要因素,其在模型中具有重要作用。表明GNRI为预测老年细菌性肺炎病人28 d死亡率的关键因素之一。见图4。
本研究基于MIMIC-Ⅳ 2.2数据库开展回顾性队列分析,结果显示,老年细菌性肺炎病人28 d死亡率与GNRI存在非线性关联关系(P<0.001)。且研究结果显示,高营养风险病人28 d死亡率较高(P<0.000 1)。Cox比例风险回归模型使用检验比例风险假定,有利于确保模型有效性。模型1作为基线模型未调整变量,反映了GNRI与结局的初始关联强度。方法学共识指出,人口学因素是强混杂变量,可能独立影响结局[22]。故模型2调整了年龄、性别,为后续分析提供可比基准。模型3在模型2基础上,进一步纳入多个协变量,其目的是通过调整已知混杂因素判断GNRI与死亡率间的独立关联,从而实现对GNRI预后价值的无偏倚评估。Cox比例风险回归模型结果表明,GNRI是28 d死亡的独立预测因子,在高营养风险病人中,HR值(1.656)最高。Kaplan-Meier生存曲线进一步验证了GNRI分层病人的生存差异,亚组分析显示这种关联在不同人口学特征和合并症病人中结果一致。此外,Boruta算法将GNRI列为预测28 d死亡率的关键因素之一。上述结果为GNRI在老年细菌性肺炎预后评估中的临床应用提供了重要依据。
血清白蛋白是GNRI的核心参数,其水平下降可能反映慢性炎症状态或肝功能受损,导致蛋白质合成减少和分解代谢增加[9]。同时,低白蛋白水平与重症肺炎病人的高炎症反应相关,可能加剧氧化应激和组织损伤,导致多器官功能障碍,影响病人预后[23-24]。营养不良会削弱细胞免疫和体液免疫功能,降低中性粒细胞趋化性、吞噬功能及杀菌活性,削弱对细菌的清除能力[25]。已有研究结果显示,对于严重营养不良的儿童,中性粒细胞功能受损可导致下呼吸道感染(如肺炎)易感性增加[9]。低GNRI病人更易出现免疫功能抑制,导致感染控制能力下降[26]。营养不良可导致促炎与抗炎细胞因子失衡,加剧全身性炎症反应,促进细胞因子(如白细胞介素-6、肿瘤坏死因子-α)释放,进一步抑制白蛋白合成并加速肌肉消耗,形成恶性循环。对于营养不良老年病人而言,慢性炎症状态可能加重肺部感染后的组织损伤[23,26]。营养不良病人对抗生素的药代动力学改变(如分布容积增大、白蛋白结合率降低),可能影响疗效[27]。且老年细菌性肺炎病人长期使用广谱抗生素可进一步发生多重耐药菌感染,严重影响疗效,形成恶性循环[27-30]。基于上述机制,GNRI通过反映营养状况、炎症水平及免疫功能,成为预测老年细菌性肺炎病人死亡的有效指标。
GNRI作为一种基于血清白蛋白和体重变化构建的客观、量化营养评估工具,已在临床展现了重要的应用价值[31],其兼具科学性、实用性和经济性,对于推动精准医疗和改善病人预后具有重要意义,具体包括死亡率预测[32]、并发症预测[33]、病人风险分层、指导营养干预[34]等。黄佩佩等[32-34]研究结果显示,GNRI可以在多种疾病背景下(如慢性肾脏病、心血管疾病、恶性肿瘤)显示出对不良临床结局的良好预测能力。Hua等[35-36]研究结果表明,低GNRI与术后感染、吻合口瘘、住院时间延长等不良事件风险增加相关。GNRI通过将营养风险量化为具体数值,帮助临床医生对病人进行风险分层,从而指导个体化治疗[37]。其不仅可用于初始营养风险筛查,还可作为动态监测指标评估营养支持治疗的有效性,为调整营养干预方案提供参考依据。
本研究将入住ICU后的28 d死亡率作为主要结局指标,入住ICU的28 d常被作为评估ICU病人急性期干预效果的关键时间窗,这一时期能反映初始治疗(如抗生素、机械通气)对老年细菌性肺炎病人的治疗效果,与≥90 d死亡率相比,更聚焦于细菌性肺炎本身的直接后果,而非病人基础疾病或长期并发症的影响,可一定程度上避免长期混杂因素的影响[38]。
GNRI针对老年人开发,通过血清白蛋白和体重变化评估营养风险,能更精准地反映老年病人的营养状态及代谢特点,其操作简便,无须复杂或侵入性检测,适用于快速筛查。与其他营养评价工具比较,GNRI具有一定的临床优势。1)危重症病人营养风险(NUTRIC)评分需结合多种临床生理参数,包括年龄、急性生理学与慢性健康状况评分Ⅱ(APACHEⅡ)评分、SOFA评分等,总分为0~9分,得分越高表示营养风险越高。NUTRIC评分适用于ICU场景,但缺乏在细菌性肺炎群体中的直接应用证据,导致临床价值受限。已有研究发现,在ICU肺炎病人中,更高的NUTRIC评分与短期内基本日常生活能力下降等残疾风险相关,但与死亡风险相关性不明显[39],而GNRI能明确识别高死亡风险人群[12]。2)预后营养指数(Prognostic Nutritional Index,PNI)是基于血清白蛋白和淋巴细胞计数(ALC)计算得出[40],与GNRI等相比,PNI在预测病人预后中并未表现出明显优势[41]。且在呼吸衰竭ICU病人的30 d死亡率预测方面,GNRI优于PNI,显示出更强的预后价值[42]。3)微型营养评估法简表(Mini Nutritional Assessment-Short Form,MNA-SF)包括体重变化、饮食摄入和整体健康状态等要素,是评估营养状态依赖的主观问卷,受病人认知或沟通能力限制,而GNRI为量化的客观指数,较少受主观偏差影响,更适用于意识不清的ICU病人或急性期肺炎病人[43]。4)已有研究显示,GNRI可用于评估不同疾病老年病人的营养风险和长期营养监测,与微型营养评估(MNA)、营养不良筛查工具(MST)、营养不良通用筛查工具(MUST)、营养风险筛查2002(NRS 2002)和主观全面评定(SGA)等相比,GNRI在识别病人营养风险、预测危重症病人死亡风险方面具有较好的准确性、敏感性和特异性[31]。GNRI与其他营养指标相比更客观、便捷,适用于老年细菌性肺炎病人。
为了提高老年细菌性肺炎病人生存率,应尽早评估病人GNRI。可建立由重症病人医师、营养师、药剂师和护士组成的营养支持团队,制定标准化喂养流程,以提高营养达标率[44]。可根据病人耐受性选择高蛋白配方的肠内营养(如短肽配方)。高蛋白摄入可改善严重肺炎病人的肌肉质量,减少ICU获得性衰弱,并缩短康复时间[45]。可结合免疫营养与微生态调节,在肠内营养中添加益生菌(如乳杆菌),降低多重耐药菌(MDRO)感染风险[46]。可通过早期、渐进式、个体化的营养支持满足病人能量与蛋白质需求,提高病人免疫力,降低机体炎症强度,控制病情。同时,应兼顾代谢需求与器官功能保护,定期对病人进行营养评估。
本研究利用大型公共数据库作为数据来源,共纳入2 903例病人,样本量较大,一定程度上避免了因样本量小、代表性不足造成的局限,为GNRI在高危人群中的应用提供了较高级别的循证证据。研究结合Kaplan-Meier生存分析、亚组分析、Boruta机器学习算法,从多个维度验证GNRI的预测价值,明确了GNRI在危重环境下的重要地位,为该工具的临床应用提供了坚实的方法学基础。
本研究为检验研究结果的有效性,对混杂因素进行多因素校正和亚组分析,验证了结果的稳健性,但回顾性研究无法排除未测量的混杂因素,研究仅能对相关性进行分析,无法评估因果关系。未来研究方向包括:1)探索GNRI与炎症指标(如中性粒细胞及淋巴细胞比值)的组合模型,提升预后预测精度。2)与其他营养指标进行预测比较,寻求更多的多中心临床研究进行精准指导。3)对不同营养风险病人定期随访,定时评估营养状况,及时发现潜在营养不良风险,及时采取个体化干预措施,研究病人营养水平变化轨迹。

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2026年第40卷第14期
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doi: 10.12102/j.issn.1009-6493.2026.14.002
  • 接收时间:2025-07-30
  • 首发时间:2026-10-30
  • 出版时间:2026-07-25
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  • 收稿日期:2025-07-30
  • 修回日期:2026-04-20
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    1黑龙江中医药大学,黑龙江 150040
    2黑龙江中医药大学附属第一医院

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2种不同金属材料的力学参数
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属数
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genus
种数
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species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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