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晚期早产儿中小于胎龄儿的铁代谢状态分析

Analysis of iron metabolism status of small for gestational age among late preterm infants

来源期刊: 广州医药 | 782-786 发布时间:2025-06-20 收稿时间:2025/7/24 15:30:59 阅读量:28
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关键词:
铁代谢早产儿小于胎龄儿
iron metabolismpreterm infantssmall for gestational age
DOI:
10. 20223 / j. cnki. 1000-8535. 2025. 06. 008
收稿时间:
2024-04-16 
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       目的  探讨晚期早产儿中小于胎龄儿(SGA)与适于胎龄儿(AGA)出生时的铁代谢状态。方法 取2020年1—12月合肥市妇幼保健院收治的150例晚期早产儿(胎龄34~36+6周)作为研究对象。按照出生体质量和胎龄将早产儿分为SGA组(36例)和AGA组(114例),分析比较两组早产儿出生时的铁代谢状态,并应用多因素线性回归分析血清铁的影响因素。结果  与AGA组相比,SGA婴儿的更低的血清铁[14.5 μmol /L (11.4,17.1) vs 16.4 μmol /L(14.1,18.4),P=0.004]、更低的血清铁蛋白[135.6 μg/L(101.8,176.2) vs 172.5 μg/L(123.0,218.3),P=0.009]和更低的总铁结合力[30.4 μmol/L(26.8,34.9)vs 35.4 μmol/L(29.5,44.6),P=0.001]。两组早产儿的血红蛋白、平均红细胞体积、平均红细胞血红蛋白含量和平均红细胞血红蛋白浓度比较差异均无统计学意义(P>0.05)。在早产儿围生期特征中,胎盘异常(β= –1.949,P=0.009)和母亲糖尿病的发生(β= –2.324,P=0.001)与血清铁水平呈负相关。结论  与早产AGA相比,早产SGA铁储备水平较低,适量补充铁元素对小于胎龄新生儿身体发育有促进作用。
      Objective   To explore the iron metabolism status in late preterm infants who are small for gestational age(SGA)compared to those appropriate for gestational age(AGA)at birth.Methods   A total of 150 late preterm infants(gestational age 34 to 36+6 weeks)admitted to the Maternal and Child Health Hospital of Hefei from January to December 2020 were selected as the study subjects.The preterm infants were divided into the SGA group(36 cases)and the AGA group(114 cases)according to birth weight and gestational age.The iron metabolism status at birth was analyzed and compared between the two groups of preterm infants,and multiple linear regression analysis was applied to identify the influencing factors of serum iron.Results   Compared with the AGA group,SGA infants had lower serum iron(14.5[11.4,17.1] vs 16.4 [14.1,18.4],P=0.004),lower serum iron protein(135.6[101.8,176.2] vs 172.5[123.0,218.3],P=0.009),and lower total iron binding capacity(30.4[26.8,34.9] vs35.4[29.5,44.6]P=0.001).There were no statistically significant differences in hemoglobin,mean corpuscular volume,mean corpuscular hemoglobin,and mean corpuscular hemoglobin concentration between the two groups of preterm infants(P>0.05).Among the perinatal characteristics of preterm infants,placental abnormalities(β= –1.949,P=0.009)and the occurrence of maternal diabetes(β= –2.324,P=0.001)were significantly negatively correlated with serum iron levels.Conclusions  Compared with preterm infants appropriate for gestational age,preterm infants who are small for gestational age have lower iron reserves at birth.Adequate supplementation of iron has a promoting effect on the physical development of small for gestational age newborns.
       铁是神经发育、神经元能量代谢和髓鞘形成所必需的微量营养素,特别是在胎儿期和早期大脑生长阶段[1]。早期铁缺乏与一系列不良健康结果相关,包括贫血、免疫功能下降、生长迟缓和神经发育异常[2-3]。胎儿期间铁的获取主要通过胎盘转运完成,而在妊娠的最后3个月,铁的积累明显增加[4]。然而,由于早产儿的提前出生,他们可能无法在这一关键时期获得足够的铁储备,因此早产儿可能在出生时表现出较低的铁储备[5-6]。小于胎龄(small for  gestational  age infant,SGA)儿指的是在胎龄相对较短的情况下出生体质量低于同胎龄婴儿平均体质量第10百分位数的婴儿。Kim 等[7]的研究表明,与适于胎龄(appropriate for gestational age,AGA)儿相比,SGA儿出生时更容易出现铁缺乏或铁贫血的情况[8-9],这种差异可能与胎儿生长受限时的母体铁转运和储存有关[10]。早产SGA儿同时面临早产和胎儿生长受限的双重风险,需要更加密切地监护和关注[11-12]。然而,早产SGA儿在出生时的铁代谢状态尚未得到很好的评估。本研究旨在分析晚期早产儿中SGA和AGA儿在出生时的铁储备情况,以揭示这一关键过渡期内早产SGA儿的铁代谢状态。通过阐明这一脆弱人群的铁状况,可能有助于制定针对早产SGA儿的临床管理策略和干预措施,以优化其预后。

1  资料与方法

1.1  资料来源

       本研究选取了合肥市妇幼保健院于2020年1—12月收治的150例晚期早产儿,其中男69例、女81例。病例纳入标准:①胎龄为34~36+6周;②符合SGA儿和AGA儿诊断标准。排除标准:①发育畸形者,包括两性畸形、消化道畸形等;②新生儿出生史或母亲病历资料不完整者。按照出生体质量和胎龄将早产儿分为SGA组36例和AGA组114例。研究方案通过医院伦理委员会审批(伦理批件号:YYLL2020-2020xkj235-02-01)。

1.2  方法

       根据出生体质量小于同胎龄平均体质量第10百分位数诊断SGA,出生体质量在同胎龄平均体质量的第10百分位数至第90百分位数诊断AGA[13]收集了早产儿的临床资料及围生期特征,包括胎龄、性别、出生体质量、胎盘异常、羊水异常、剖宫、母亲高血压和母亲糖尿病。同时检测了早产儿出生后一周内的血红蛋白(hemoglobin,Hb)、血清铁蛋白(serum ferritin,SF)、血清铁(serum iron,SI)、总铁结合能力(total iron binding capacity,TIBC)、平均红细胞体积(mean corpuscular volume,MCV)、平均红细胞血红蛋白含量(mean corpuscular hemoglobin,MCH)和平均红细胞血红蛋白浓度(mean corpuscular hemoglobin concentration,MCHC)等血液学参数。血液学相关参数的测量采用了免疫比浊法和亚铁嗪法,并通过自动血细胞计数仪获得。

1.3  统计学方法

       采用SPSS 26.0 统计软件进行统计分析。分类资料采用n(%)表示,组间率比较采用χ 2 检验。非正态分布计量资料以中位数和四分数间距表示,组间比较采用Wilcoxon秩和检验。采用多因素线性回归分析新生儿的血清铁水平的影响因素。双侧检验,以P<0.05为差异有统计学意义。

2  结 果

2.1  基本资料

       SGA组胎龄为34.30(34.10,36.28)周,AGA组胎龄为34.40(34.00,35.30)周,两组比较差异无统计学意义(Z=-0.960,P=0.337)。SGA组体质量为1.75(1.74~1.87)kg,AGA组体质量为2.30(2.10~2.50)kg,两组比较差异有统计学意义(Z=–7.477,P<0.001)。SGA组男15例、女21例;AGA组男54例、女60例。两组早产儿性别构成比差异无统计学意义(χ 2 =0.358,P=0.550)。

2.2  两组早产儿围生期特征

       SGA组的胎盘异常和母亲高血压比例高于AGA组(P<0.05);而两组的剖宫产、羊水异常和母亲糖尿病比例比较差异无统计学意义(P>0.05),但在SGA组中仍表现升高的趋势。见表1。

          表1   两组早产儿围生期情况比较          [n(%)]

变量

SGA组 ( n=36 )

AGA组 ( n=114 )

χ²

P

剖宫产

24 ( 66.7 )

56 ( 49.1 )

3.383

0.066

胎盘异常

12 ( 33.3 )

9 ( 7.9 )

14.705

<0.001

羊水异常

9 ( 25.0 )

16 ( 14.0 )

2.368

0.124

母亲高血压

16 ( 44.4 )

17 ( 14.9 )

13.906

<0.001

母亲糖尿病

6 ( 16.7 )

16 ( 14.0 )

0.151

0.697

 

2.3  两组早产儿铁代谢状态及血液学相关参数比较

       两组早产儿的Hb、MCV、MCH和MCHC比较差异均无统计学意义(P>0.05)。与AGA组相比,SGA组的血清铁、铁蛋白和总铁结合力水平较低(P<0.05)。见表2。

    2   两组早产儿铁代谢状态及血液学相关参数比较    [M P25 ,  P75]

变量

SGA( n=36 )

AGA( n=114 )

Z

P

血清铁/(μmol /L)

14.5 (11.4, 17.1)

16.4 ( 14.1, 18.4 )

2.882

0.004

血清铁蛋白/(μg/L)

135.6 (101.8, 176.2)

172.5 ( 123.0, 218.3 )

2.596

0.009

总铁结合/(μmol/L)

30.4 ( 26.8, 34.9 )

35.4 ( 29.5, 44.6 )

3.265

0.001

Hb/(g/L)

165.9 ( 141.8, 174.8 )

158.4 ( 143.9, 172.2 )

0.497

0.619

MCV/fL

115.4 ( 102.1, 123.5 )

110.1 ( 102.5, 118.1 )

1.329

0.184

MCH /pg

35.9 ( 33.3, 37.4 )

36.6 ( 33.1, 39.0 )

0.365

0.715

MCHC/(g/L)

332.4 ( 306.3, 352.1 )

319.4 ( 297.4, 344.6 )

1.461

0.144

 

2.4  早产儿血清铁的影响因素

       血清铁水平的亚组分析结果显示,相比正常早产儿,剖宫产、胎盘异常、羊水异常、母亲患高血压和母亲患糖尿病的早产儿具有较低的血清铁水平(P<0.05),见表3。进一步对血清铁水平进行多因素线性回归分析,纳入的影响因素包括胎盘异常、羊水异常、母亲高血压、母亲糖尿病和婴儿出生体质量。因为剖宫产与其他变量(包括胎盘异常和羊水异常)存在高度的共线性关系,故未将剖宫产纳入多因素线性回归分析。结果显示,胎盘异常、母亲糖尿病均与早产儿的血清铁水平呈负相关(P<0.05);新生儿出生体质量与早产儿的血清铁水平呈正相关(P<0.05),见表4。

    表3  早产儿围生期特征对血清铁的影响     [M P25 , P75]

变量

类别

血清铁/(μmol /L)

Z

P

剖宫产

18.1 ( 16.8, 19.0 )

7.986

<0.001

 

14.2 ( 12.2, 15.4 )

 

 

胎盘异常

16.5 ( 14.1, 18.5 )

3.556

<0.001

 

13.2 ( 11.5, 15.1 )

 

 

羊水异常

16.5 ( 14.2, 18.4 )

3.048

0.002

 

13.2 ( 12.0, 15.1 )

 

 

母亲高血压

16.6 ( 14.0, 18.5 )

3.133

0.002

 

14.5 ( 12.3, 15.8 )

 

 

母亲糖尿病

16.4 ( 14.2, 18.5 )

3.501

<0.001

 

13.2 ( 12.0, 14.6 )

 

       

 

     表4 影响早产儿血清铁的多因素线性回归分析

变量

β

95%CI

t

P

胎盘异常(否为参照)

1.949

(3.304, 0.494)

2.648

0.009

羊水异常(否为参照)

1.152

(2.484,  0.180)

1.709

0.090

母亲高血压(否为参照)

1.068

(2.287,  0.151)

1.731

0.086

母亲糖尿病(否为参照)

2.324

(3.700, 0.948)

3.339

0.001

出生体质量

1.255

(0.040,  2.470)

2.042

0.043

 

3  讨 论

       铁是人体生长发育过程中不可或缺的微量营养素之一,特别对胎儿期和早期婴儿的神经系统发育至关重要。新生儿的铁储备主要是胎儿期间通过胎盘从母体获得,尤其是在妊娠的最后3个月,铁的积累明显增加[14-15]。由于早产打断了这种铁转移,导致早产儿的铁储备低于正常水平。早产SGA儿指的是在胎龄相对较短的情况下出生体质量低于同胎龄婴儿平均体质量第10百分位数的婴儿,多由于早产和胎儿宫内生长迟缓所致。对于早产SGA儿来说,既有早产所带来的健康问题,又有SGA所带来的发育问题,因此需要更加密切地监护和关注。本研究旨在探讨晚期早产儿中SGA和AGA儿在出生时的体内铁储备情况,并进一步分析其围生期特征及血液学参数,以了解早产SGA婴儿铁代谢状态的现状。
        本研究表明早产SGA组的血清铁、铁蛋白和总铁结合能力水平较早产AGA组显著降低,表明早产SGA儿在出生时存在较低的铁储备。亚组分析表明早产儿的血清铁水平与剖宫产、胎盘异常、羊水异常、母亲高血压和母亲糖尿病等因素显著相关。进一步的多因素线性回归分析也表明血清铁与胎盘异常、母亲糖尿病、出生体质量显著相关。SGA儿在子宫内生长受限,可能导致胎儿器官和组织发育不全,包括造血系统,因此他们出生时铁储备较低[14]。另外一个可能的原因是母体营养不良导致胎儿铁元素供应不足,从而导致铁储备较低[16-18]。胎盘是胎儿获得营养和氧气的主要途径之一,而在SGA儿中,胎盘可能无法提供足够的营养和铁元素,从而影响胎儿的铁摄入和储存。大量的研究报道了糖尿病母亲的新生儿更容易出现铁储备不够[19-21],可能原因是胰岛素抵抗和高血糖可以改变胎盘对铁的转运能力,从而影响胎儿铁的储备。
       早期铁缺乏可能对婴幼儿的健康产生不良影响,包括贫血、免疫功能下降、生长迟缓和神经发育异常等[22-23]。因此,对早产SGA儿的铁代谢状态进行评估和监测具有重要的临床意义。通过及时识别和干预铁缺乏,可以降低对婴幼儿健康的潜在危害,促进其正常生长和发育[24-25]。然而,本研究也存在一些局限性。首先,样本量相对较小,可能影响结果的可靠性。其次,本研究未能观察和分析早产SGA婴儿在出生后铁代谢状态的长期影响,需要进一步的长期随访研究来验证结果的稳定性和可靠性。
       综上所述,本研究揭示了早产SGA婴儿出生时的铁代谢状态存在异常,这可能与其围生期特征和出生体质量不足有关。进一步的研究有助于深入了解早产SGA婴儿的铁代谢异常与健康问题之间的关系,并为临床干预提供更有效的依据。
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4、GEORGIEFF%E2%80%83M%E2%80%83K%EF%BC%8EIron%E2%80%83deficiency%E2%80%83in%E2%80%83pregnancy%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%0AAm%E2%80%83J%E2%80%83Obstet%E2%80%83Gynecol%EF%BC%8C2020%EF%BC%8C223%EF%BC%884%EF%BC%89%EF%BC%9A516-524%EF%BC%8EGEORGIEFF%E2%80%83M%E2%80%83K%EF%BC%8EIron%E2%80%83deficiency%E2%80%83in%E2%80%83pregnancy%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%0AAm%E2%80%83J%E2%80%83Obstet%E2%80%83Gynecol%EF%BC%8C2020%EF%BC%8C223%EF%BC%884%EF%BC%89%EF%BC%9A516-524%EF%BC%8E
5、陈功雪,吴艳,朱叶芳.不同胎龄早产儿血清铁蛋白水平及其影响因素[J].中华新生儿科杂志,2021,36(4):32-35.陈功雪,吴艳,朱叶芳.不同胎龄早产儿血清铁蛋白水平及其影响因素[J].中华新生儿科杂志,2021,36(4):32-35.
6、M%E2%80%83K%E2%80%83A%E2%80%83K%EF%BC%8CPOURNAMI%E2%80%83F%EF%BC%8CPRABHAKAR%E2%80%83J%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83status%E2%80%83of%E2%80%83the%E2%80%83moderate%E2%80%83and%E2%80%83late%E2%80%83preterm%E2%80%83infant%EF%BC%9A%0AA%E2%80%83prospective%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Trop%E2%80%83Pediatr%EF%BC%8C%0A2021%EF%BC%8C67%EF%BC%885%EF%BC%89%EF%BC%9Afmab088%EF%BC%8EM%E2%80%83K%E2%80%83A%E2%80%83K%EF%BC%8CPOURNAMI%E2%80%83F%EF%BC%8CPRABHAKAR%E2%80%83J%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83status%E2%80%83of%E2%80%83the%E2%80%83moderate%E2%80%83and%E2%80%83late%E2%80%83preterm%E2%80%83infant%EF%BC%9A%0AA%E2%80%83prospective%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Trop%E2%80%83Pediatr%EF%BC%8C%0A2021%EF%BC%8C67%EF%BC%885%EF%BC%89%EF%BC%9Afmab088%EF%BC%8E
7、KIM%E2%80%83H%E2%80%83A%EF%BC%8CPARK%E2%80%83S%E2%80%83H%EF%BC%8CLEE%E2%80%83E%E2%80%83J%EF%BC%8EIron%E2%80%83status%E2%80%83in%E2%80%83small%E2%80%83%0Afor%E2%80%83gestational%E2%80%83age%E2%80%83and%E2%80%83appropriate%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83%0Ainfants%E2%80%83at%E2%80%83birth%EF%BC%BBJ%EF%BC%BD%EF%BC%8EKorean%E2%80%83J%E2%80%83Pediatr%EF%BC%8C2019%EF%BC%8C62%0A%EF%BC%883%EF%BC%89%EF%BC%9A102-107%EF%BC%8EKIM%E2%80%83H%E2%80%83A%EF%BC%8CPARK%E2%80%83S%E2%80%83H%EF%BC%8CLEE%E2%80%83E%E2%80%83J%EF%BC%8EIron%E2%80%83status%E2%80%83in%E2%80%83small%E2%80%83%0Afor%E2%80%83gestational%E2%80%83age%E2%80%83and%E2%80%83appropriate%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83%0Ainfants%E2%80%83at%E2%80%83birth%EF%BC%BBJ%EF%BC%BD%EF%BC%8EKorean%E2%80%83J%E2%80%83Pediatr%EF%BC%8C2019%EF%BC%8C62%0A%EF%BC%883%EF%BC%89%EF%BC%9A102-107%EF%BC%8E
8、SHARMA%E2%80%83K%EF%BC%8CBATRA%E2%80%83P%EF%BC%8CDEWAN%E2%80%83P%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83%20profile%E2%80%83in%E2%80%83term%E2%80%83%20small%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83infants%E2%80%83%0Aat%E2%80%8310%E2%80%83weeks%E2%80%83of%E2%80%83age%E2%80%83and%E2%80%83correlation%E2%80%83with%E2%80%83maternal%E2%80%83iron%E2%80%83%0Aprofile%EF%BC%9AA%E2%80%83prospective%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EIndian%E2%80%83%0APediatr%EF%BC%8C2023%EF%BC%8C60%EF%BC%883%EF%BC%89%EF%BC%9A197-201%EF%BC%8ESHARMA%E2%80%83K%EF%BC%8CBATRA%E2%80%83P%EF%BC%8CDEWAN%E2%80%83P%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83%20profile%E2%80%83in%E2%80%83term%E2%80%83%20small%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83infants%E2%80%83%0Aat%E2%80%8310%E2%80%83weeks%E2%80%83of%E2%80%83age%E2%80%83and%E2%80%83correlation%E2%80%83with%E2%80%83maternal%E2%80%83iron%E2%80%83%0Aprofile%EF%BC%9AA%E2%80%83prospective%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EIndian%E2%80%83%0APediatr%EF%BC%8C2023%EF%BC%8C60%EF%BC%883%EF%BC%89%EF%BC%9A197-201%EF%BC%8E
9、SUENAGA%E2%80%83H%EF%BC%8CNAKANISHI%E2%80%83H%EF%BC%8CUCHIYAMA%E2%80%83A%EF%BC%8C%0Aet%E2%80%83al%EF%BC%8ESmall%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83affects%E2%80%83outcomes%E2%80%83on%E2%80%83%0Asingletons%E2%80%83%20and%E2%80%83inborn%E2%80%83%20births%E2%80%83in%E2%80%83%20extremely%E2%80%83%20preterm%E2%80%83%0Ainfants%EF%BC%9AA%E2%80%83Japanese%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EAm%E2%80%83%20J%E2%80%83%0APerinatol%EF%BC%8C2024%EF%BC%8C41%EF%BC%88S%E2%80%8301%EF%BC%89%EF%BC%9Ae780-e787%EF%BC%8ESUENAGA%E2%80%83H%EF%BC%8CNAKANISHI%E2%80%83H%EF%BC%8CUCHIYAMA%E2%80%83A%EF%BC%8C%0Aet%E2%80%83al%EF%BC%8ESmall%E2%80%83for%E2%80%83gestational%E2%80%83age%E2%80%83affects%E2%80%83outcomes%E2%80%83on%E2%80%83%0Asingletons%E2%80%83%20and%E2%80%83inborn%E2%80%83%20births%E2%80%83in%E2%80%83%20extremely%E2%80%83%20preterm%E2%80%83%0Ainfants%EF%BC%9AA%E2%80%83Japanese%E2%80%83cohort%E2%80%83study%EF%BC%BBJ%EF%BC%BD%EF%BC%8EAm%E2%80%83%20J%E2%80%83%0APerinatol%EF%BC%8C2024%EF%BC%8C41%EF%BC%88S%E2%80%8301%EF%BC%89%EF%BC%9Ae780-e787%EF%BC%8E
10、KEMPPINEN%E2%80%83L%EF%BC%8CMATTILA%E2%80%83M%EF%BC%8CEKHOLM%E2%80%83E%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AGestational%E2%80%83iron%E2%80%83deficiency%E2%80%83anemia%E2%80%83is%E2%80%83associated%E2%80%83with%E2%80%83%0Apreterm%E2%80%83birth%EF%BC%8Cfetal%E2%80%83growth%E2%80%83restriction%EF%BC%8Cand%E2%80%83postpartum%E2%80%83%0Ainfections%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Perinat%E2%80%83Med%EF%BC%8C2021%EF%BC%8C49%EF%BC%884%EF%BC%89%EF%BC%9A%0A431-438%EF%BC%8EKEMPPINEN%E2%80%83L%EF%BC%8CMATTILA%E2%80%83M%EF%BC%8CEKHOLM%E2%80%83E%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AGestational%E2%80%83iron%E2%80%83deficiency%E2%80%83anemia%E2%80%83is%E2%80%83associated%E2%80%83with%E2%80%83%0Apreterm%E2%80%83birth%EF%BC%8Cfetal%E2%80%83growth%E2%80%83restriction%EF%BC%8Cand%E2%80%83postpartum%E2%80%83%0Ainfections%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Perinat%E2%80%83Med%EF%BC%8C2021%EF%BC%8C49%EF%BC%884%EF%BC%89%EF%BC%9A%0A431-438%EF%BC%8E
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16、KANGALGIL%E2%80%83M%EF%BC%8CSAHINLER%E2%80%83A%EF%BC%8CK%C4%B1RKBIR%E2%80%83I%E2%80%83B%EF%BC%8Cet%E2%80%83%0Aal%EF%BC%8EAssociations%E2%80%83of%E2%80%83maternal%E2%80%83characteristics%E2%80%83and%E2%80%83dietary%E2%80%83%0Afactors%E2%80%83with%E2%80%83anemia%E2%80%83and%E2%80%83iron-deficiency%E2%80%83in%E2%80%83pregnancy%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Gynecol%E2%80%83Obstet%E2%80%83Hum%E2%80%83Reprod%EF%BC%8C2021%EF%BC%8C50%0A%EF%BC%888%EF%BC%89%EF%BC%9A102137%EF%BC%8EKANGALGIL%E2%80%83M%EF%BC%8CSAHINLER%E2%80%83A%EF%BC%8CK%C4%B1RKBIR%E2%80%83I%E2%80%83B%EF%BC%8Cet%E2%80%83%0Aal%EF%BC%8EAssociations%E2%80%83of%E2%80%83maternal%E2%80%83characteristics%E2%80%83and%E2%80%83dietary%E2%80%83%0Afactors%E2%80%83with%E2%80%83anemia%E2%80%83and%E2%80%83iron-deficiency%E2%80%83in%E2%80%83pregnancy%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8EJ%E2%80%83Gynecol%E2%80%83Obstet%E2%80%83Hum%E2%80%83Reprod%EF%BC%8C2021%EF%BC%8C50%0A%EF%BC%888%EF%BC%89%EF%BC%9A102137%EF%BC%8E
17、MEZZANO%E2%80%83J%EF%BC%8CNAMIREMBE%E2%80%83G%EF%BC%8CAUSMAN%E2%80%83L%E2%80%83M%EF%BC%8C%0Aet%E2%80%83al%EF%BC%8EEffects%E2%80%83of%E2%80%83iron%E2%80%83and%E2%80%83vitamin%E2%80%83A%E2%80%83levels%E2%80%83on%E2%80%83pregnant%E2%80%83%0Awomen%E2%80%83and%E2%80%83birth%E2%80%83outcomes%EF%BC%9AComplex%E2%80%83%20relationships%E2%80%83%0Auntangled%E2%80%83using%E2%80%83a%E2%80%83birth%E2%80%83cohort%E2%80%83study%E2%80%83in%E2%80%83Uganda%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%0AMatern%E2%80%83Child%E2%80%83Health%E2%80%83J%EF%BC%8C2022%EF%BC%8C26%EF%BC%887%EF%BC%89%EF%BC%9A1516-1528%EF%BC%8EMEZZANO%E2%80%83J%EF%BC%8CNAMIREMBE%E2%80%83G%EF%BC%8CAUSMAN%E2%80%83L%E2%80%83M%EF%BC%8C%0Aet%E2%80%83al%EF%BC%8EEffects%E2%80%83of%E2%80%83iron%E2%80%83and%E2%80%83vitamin%E2%80%83A%E2%80%83levels%E2%80%83on%E2%80%83pregnant%E2%80%83%0Awomen%E2%80%83and%E2%80%83birth%E2%80%83outcomes%EF%BC%9AComplex%E2%80%83%20relationships%E2%80%83%0Auntangled%E2%80%83using%E2%80%83a%E2%80%83birth%E2%80%83cohort%E2%80%83study%E2%80%83in%E2%80%83Uganda%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%0AMatern%E2%80%83Child%E2%80%83Health%E2%80%83J%EF%BC%8C2022%EF%BC%8C26%EF%BC%887%EF%BC%89%EF%BC%9A1516-1528%EF%BC%8E
18、LONG%E2%80%83H%E2%80%83H%EF%BC%8CLI%E2%80%83S%EF%BC%8CLIU%E2%80%83Z%E2%80%83M%EF%BC%8Cet%E2%80%83al%EF%BC%8EMaternal%E2%80%83iron%E2%80%83%0Astatus%E2%80%83during%E2%80%83the%E2%80%83first%E2%80%83half%E2%80%83of%E2%80%83gestation%E2%80%83with%E2%80%83subsequent%E2%80%83%0Arisk%E2%80%83of%E2%80%83gestational%E2%80%83diabetes%E2%80%83and%E2%80%83adverse%E2%80%83birth%E2%80%83outcomes%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8ECurr%E2%80%83Dev%E2%80%83Nutr%EF%BC%8C2022%EF%BC%886%EF%BC%89%EF%BC%9A685%EF%BC%8ELONG%E2%80%83H%E2%80%83H%EF%BC%8CLI%E2%80%83S%EF%BC%8CLIU%E2%80%83Z%E2%80%83M%EF%BC%8Cet%E2%80%83al%EF%BC%8EMaternal%E2%80%83iron%E2%80%83%0Astatus%E2%80%83during%E2%80%83the%E2%80%83first%E2%80%83half%E2%80%83of%E2%80%83gestation%E2%80%83with%E2%80%83subsequent%E2%80%83%0Arisk%E2%80%83of%E2%80%83gestational%E2%80%83diabetes%E2%80%83and%E2%80%83adverse%E2%80%83birth%E2%80%83outcomes%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8ECurr%E2%80%83Dev%E2%80%83Nutr%EF%BC%8C2022%EF%BC%886%EF%BC%89%EF%BC%9A685%EF%BC%8E
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22、EAST%E2%80%83P%EF%BC%8CDOOM%E2%80%83J%E2%80%83R%EF%BC%8CBLANCO%E2%80%83E%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83%20deficiency%E2%80%83in%E2%80%83infancy%E2%80%83%20and%E2%80%83%20neurocognitive%E2%80%83%20and%E2%80%83%0Aeducational%E2%80%83outcomes%E2%80%83in%E2%80%83young%E2%80%83adulthood%EF%BC%BBJ%EF%BC%BD%EF%BC%8EDev%E2%80%83%0APsychol%EF%BC%8C2021%EF%BC%8C57%EF%BC%886%EF%BC%89%EF%BC%9A962-975%EF%BC%8EEAST%E2%80%83P%EF%BC%8CDOOM%E2%80%83J%E2%80%83R%EF%BC%8CBLANCO%E2%80%83E%EF%BC%8Cet%E2%80%83al%EF%BC%8E%0AIron%E2%80%83%20deficiency%E2%80%83in%E2%80%83infancy%E2%80%83%20and%E2%80%83%20neurocognitive%E2%80%83%20and%E2%80%83%0Aeducational%E2%80%83outcomes%E2%80%83in%E2%80%83young%E2%80%83adulthood%EF%BC%BBJ%EF%BC%BD%EF%BC%8EDev%E2%80%83%0APsychol%EF%BC%8C2021%EF%BC%8C57%EF%BC%886%EF%BC%89%EF%BC%9A962-975%EF%BC%8E
23、RAMACHANDRA%E2%80%83D%E2%80%83S%EF%BC%8CUPPUNDA%E2%80%83A%E2%80%83K%EF%BC%8C%0ASURYANARAYANA%E2%80%83K%E2%80%83G%EF%BC%8EDisto%20rtion%E2%80%83%20p%20roduct%E2%80%83%0Aotoacoustic%E2%80%83%20emissions%E2%80%83in%E2%80%83%20newborn%E2%80%83%20babies%E2%80%83%20with%E2%80%83%20and%E2%80%83%0Awithout%E2%80%83late-term%E2%80%83maternal%E2%80%83iron%E2%80%83deficiency%E2%80%83anaemia%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%E4%B8%AD%E5%8D%8E%E8%80%B3%E7%A7%91%E5%AD%A6%E6%9D%82%E5%BF%97%EF%BC%9A%E8%8B%B1%E6%96%87%E7%89%88%EF%BC%8C2023%EF%BC%8C1%208%0A%EF%BC%883%EF%BC%89%EF%BC%9A132-138%EF%BC%8ERAMACHANDRA%E2%80%83D%E2%80%83S%EF%BC%8CUPPUNDA%E2%80%83A%E2%80%83K%EF%BC%8C%0ASURYANARAYANA%E2%80%83K%E2%80%83G%EF%BC%8EDisto%20rtion%E2%80%83%20p%20roduct%E2%80%83%0Aotoacoustic%E2%80%83%20emissions%E2%80%83in%E2%80%83%20newborn%E2%80%83%20babies%E2%80%83%20with%E2%80%83%20and%E2%80%83%0Awithout%E2%80%83late-term%E2%80%83maternal%E2%80%83iron%E2%80%83deficiency%E2%80%83anaemia%0A%EF%BC%BBJ%EF%BC%BD%EF%BC%8E%E4%B8%AD%E5%8D%8E%E8%80%B3%E7%A7%91%E5%AD%A6%E6%9D%82%E5%BF%97%EF%BC%9A%E8%8B%B1%E6%96%87%E7%89%88%EF%BC%8C2023%EF%BC%8C1%208%0A%EF%BC%883%EF%BC%89%EF%BC%9A132-138%EF%BC%8E
24、景晔,陆光生,徐和福,等.不同年龄、不同性别铁缺乏症早期防治指标可行性研究[J].生物医学工程与临床,2013,17(5):477-480.景晔,陆光生,徐和福,等.不同年龄、不同性别铁缺乏症早期防治指标可行性研究[J].生物医学工程与临床,2013,17(5):477-480.
25、詹建英,邵洁.婴幼儿铁缺乏的早期筛查和干预[J].中华儿科杂志,2019,57(10):813-815.詹建英,邵洁.婴幼儿铁缺乏的早期筛查和干预[J].中华儿科杂志,2019,57(10):813-815.
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