孕前双亲体重指数、母孕期体重增值及其交互作用对新生儿出生体重的影响

目的 探讨孕前双亲体重指数（BMI）和母孕期体重增值及其交互作用对新生儿出生体重的影响。方法 选取2017年1月至2018年10月在西安交通大学第一附属医院做定期产检并足月单胎分娩的孕妇1 127例,收集其孕前BMI、孕期体重增值、孕前丈夫BMI、新生儿出生体重等信息,分析新生儿出生体重与孕前父母BMI和母亲孕期体重增值之间的相关性及两变量间的交互作用。结果 1 127例足月新生儿中,低出生体重检出25例（2.22%）,巨大儿检出43例（3.82%）。低出生体重儿、正常体重儿、巨大儿三组双亲孕前BMI值、母亲孕期体重增值的比较差异均有统计学意义（P < 0.05）。新生儿出生体重与孕前双亲BMI值、母亲孕期体重增值呈低度正相关（r=0.097~0.322,P < 0.05）;母亲孕前低体重可增加低出生体重儿的发生风险（RR=4.17,95% CI：1.86~9.38）;母亲孕前超重/肥胖、孕期体重增值超标可增加巨大儿的发生风险（分别RR=3.59,95% CI：1.93~6.67;RR=3.21,95% CI：1.39~7.37）。未发现母亲孕前BMI与孕期体重增值对新生儿出生体重的交互作用。结论 孕前双亲BMI和母亲孕期体重增值与新生儿出生体重有关,而母亲孕前BMI和孕期体重增值之间无交互作用。     

系统性红斑狼疮产妇孕期体重增长对新生儿出生体重影响的巢式病例对照研究

目的 考察系统性红斑狼疮(SLE)产妇孕期体重增长(GWG)对新生儿出生体重的影响。方法 以上海交通大学医学院附属仁济医院(我院)产科分娩的SLE产妇及其新生儿为研究对象。采集产妇一般情况(年龄、身高、孕前体重、教育程度、GWG、既往疾病史、分娩孕周)、第一次产检指标(收缩压、舒张压、胆固醇、甘油三酯、空腹血糖)、新生儿性别、Apgar评分及出生体重。根据年龄和教育程度1:3匹配健康产妇及其新生儿作为对照。产妇GWG与新生儿出生体重关系采用一般线性回归分析。结果 共纳入SLE产妇45例和健康产妇135例。所有产妇平均年龄(29.0±3.0)岁,新生儿平均出生体重(3 198.8±501.8)g。SLE组GWG显著低于对照组,(12.4±5.5)kg vs (15.0±5.1)kg, P=0.004,GWG 低于适宜体重增长的比例显著高于对照组(37.8% vs 16.3%, P<0.01)。将所有产妇按GWG进行四分位分组,结果显示随着GWG增长,新生儿出生体重明显增加。与GWG处于最低四分位的SLE产妇相比,处于最高四分位的产妇的新生儿出生体重多(246.4±234.1)g,差异无统计学意义。结论 SLE产妇GWG明显低于正常产妇,随着GWG的增加,新生儿出生体重有增加趋势。     

母体高尿酸血症对妊娠结局和新生儿合并症影响的回顾性巢式病例对照研究

背景：高尿酸血症（HUA）患病率逐年增高,不仅与痛风、尿酸盐肾病和肾结石有关,还与内分泌代谢、心脑血管等系统疾病的发生和发展有关。 目的：探讨孕母妊娠晚期血尿酸水平与不良妊娠结局、新生儿尿酸水平及新生儿合并症的关系。 设计：回顾性巢式病例对照研究。 方法：以2020年1~12月在北京大学人民医院产检的孕母为队列人群,根据孕母妊娠晚期血尿酸水平分为HUA组和非HUA组,比较两组妊娠结局和新生儿临床结局。根据孕母妊娠晚期血尿酸水平（μmol·L-1）分为低浓度（<360）、中浓度（~420）和高浓度（>420）,采用线性回归和Logistic 回归模型分析孕母血尿酸水平与早产、低出生体重、小于胎龄儿的关系。孕母妊娠晚期尿酸值及新生儿生后24 h尿酸值相关性分析采用Spearman秩相关分析。 主要结局指标：孕母血尿酸水平与早产、低出生体重和小于胎龄儿的关系。 结果：共纳入孕母2 397例（新生儿2 581例）,HUA组216例（9.0%）,非HUA组2 181例。HUA组孕母所生新生儿出生体重低于非HUA组（2 925 g vs 3 260 g,P<0.001）,差异均有统计学意义;而早产（18.5% vs 8.9%）、低出生体重（23.1% vs 7.1%）、小于胎龄儿（29.2% vs 10.6%）和转儿科比例（19.9% vs 11.1%）均高于非HUA组,差异均有统计学意义（P<0.001）。尿酸水平高浓度组孕母分娩的新生儿出生体重较低浓度组低54.0 g（95%CI：-106.5~-1.6,P=0.043）,发生早产的风险增加74%（OR=1.74,95%CI：1.08~2.8,P=0.023）,发生小于胎龄儿的风险增加85%（OR=1.85,95%CI：1.26~2.73,P=0.002）。新生儿生后24 h内尿酸水平与孕母妊娠晚期尿酸水平呈中等相关（r=0.613,P=0.000）。两组早产儿合并症差异无统计学意义。 结论：母体妊娠晚期HUA与早产、低出生体重、小于胎龄儿的发生相关。     

早期干预对极低体重儿预后的影响

目的探讨早期干预对极低出生体重儿(VLBWI)预后的影响。方法对60例VLB WI分为甲组(系统随访与干预)30例,乙组(未系统随访与干预)30例,甲乙两组的基本情况均无明显差异(P均>0.05)。比较两组:(1)体格发育及智测;(2)早期干预即丰富环境,语言,视、听、触觉刺激的效果和有脑损伤者配合药物治疗及水疗指针综合疗法的疗效等。结果(1)甲、乙两组身长、体重、头围无显著差异(P均>0.05)。精神发育甲组比乙组高23分,运动发育落后甲组高于乙组27分。(2)乙组发育落后明显高于甲组(P均<0.05及0.01),脑瘫发生分别为3、20例,有显著性差异(P<0.01)。结论早期干预可以减轻与康复VLBWI脑损伤的程度,在干预过程中发现发育落后及脑瘫应及时治疗。     

早期干预对早产儿和低出生体重儿在婴儿期行为发育的影响

目的：探讨早期干预早产儿和低出生体重儿在婴儿期行为发育的作用。方法：采用自行设计的早期干预方法，通过指导家长对实验组实施，另设对照组，用Gesell婴幼儿发育检查表测两组在3，6，9，12个月时的行为发育商（DQ），并作比较，结果：实验组在适应性，大运动，精细动作、语言和社会交往5个能区的DQ均值在各月龄段均高于对照组，且从3个月开始在精细动作和社会交往能区与对照组比较，存在统计学差异，在9．12个月龄阶段两组各能区的DQ经统计学检验，除大运动能区存在差异（P＜0．05）外，其他能区DQ均存在极显著性差异（P＜0．01），结论：早期干预对早产儿和低出生体重儿在婴儿期就有良好的促进作用，早期干预应该越早越好。     

超低和极低出生体重儿神经发育结局及影响因素分析

目的 评估超低/极低出生体重儿 （ELBWI和VLBWI） 在纠正年龄 （CA） 18月时神经发育结局,探讨影响神经发育结局的因素。方法 收集2013年1月至2014年6月入住新生儿重症监护病房并存活出院的ELBWI和VLBWI病例,在CA40周、1、3、6、12、18月定期随访,评估神经发育结局。按神经发育状况分为神经发育正常组和神经发育异常组,比较两组临床资料的差异,分析ELBWI和VLBWI神经发育的危险因素。结果 共338例ELBWI和VLBWI纳入研究,15例在住院期间死亡。CA18月时,145例 （44.9%） 存活且随访资料完整,75例 （23.2%） 死亡,失访103例 （31.9%）。CA18月时,145例患儿中神经发育损伤71例 （49.0%）,3例 （2.1%） 脑性瘫痪;未发现单眼或双眼失明的视觉损伤及需要助听器的听觉损伤。Logistic回归分析发现BPD和败血症是ELBWI和VLBWI神经发育异常的独立危险因素 （OR=3.530,P < 0.001;OR=2.528,P=0.035）,BPD发生程度越重,神经发育异常的发生率越高。结论 败血症、BPD （尤其是重度BPD） 是ELBWI和VLBWI神经发育异常的危险因素。     

超低出生体重儿的营养管理

超低出生体重儿是NICU中最具风险的一组早产儿,除了必要的生命支持技术以外,营养管理成为直接影响到其生存和预后的关键因素.本文从超低出生体重儿的营养需求、肠内外营养和出院后喂养几个方面阐述了其营养管理的特点.超低出生体重儿营养支持的理想目标是使其生长速率及与之相关的功能发育和体重增长的成分接近正常胎儿.     

正常妊娠与妊高症对新生儿影响的对照分析

应用回顾性对照分析的方法，对127例重度、154例中度妊高症母亲与281例正常母亲及其新生儿进行分析，结果足月儿平均出生体重在重度妊高症母亲组中为3229克，低于正常母亲组的3372克（P＜0．05）。低体重儿在重度妊高症母亲组中发生率为13．5％，高于正常母亲组1．13％（P＜0．005）。自发性早产发生率在重度妊高症母亲组为30．77％，明显高于中度组与正常组的7．8％和4．05％（P分别＜0．005与0．001）。平均胎盘重量在重度妊高症组为584克，与正常组比较有显著差别（P＜0．05）。新生儿发病率在重度妊高症母亲组中为42．85％，与正常组的新生儿13．31％比较有显著差别（P＜0．001）。认为围生医学的各种防治措施降低了妊高症与子痫的发生，但新生儿的出生体重、低出生体重与早产的发生，以及疾病发生率并未明显改善。     

Effect of a low glycaemic index diet in gestational diabetes mellitus on post‐natal outcomes after 3 months of birth: a pilot follow‐up study

A low glycaemic index (LGI) diet during pregnancy complicated by gestational diabetes mellitus (GDM) may offer benefits to the mother and infant pair beyond those during pregnancy. We aimed to investigate the effect of an LGI diet during pregnancy complicated with GDM on early post‐natal outcomes. Fifty‐eight women (age: 23–41 years; mean ± SD pre‐pregnancy body mass index: 24.5 ± 5.6 kg m^?2) who had GDM and followed either an LGI diet (n = 33) or a conventional high‐fibre diet (HF; n = 25) during pregnancy had a 75‐g oral glucose tolerance test and blood lipid tests at 3 months post‐partum. Anthropometric assessments were conducted for 55 mother–infant pairs. The glycaemic index of the antenatal diets differed modestly (mean ± SD: 46.8 ± 5.4 vs. 52.4 ± 4.4; P < 0.001), but there were no significant differences in any of the post‐natal outcomes. In conclusion, an LGI diet during pregnancy complicated by GDM has outcomes similar to those of a conventional healthy diet. Adequately powered studies should explore the potential beneficial effects of LGI diet on risk factors for chronic disease.     

Obesity,gestational weight gain,and birth weight in women with gestational diabetes: the LINDA-Brasil (2014–2017) and the EBDG (1991–1995) studies

ObjectiveThis study aimed to evaluate gestational weight gain and birth weight in women with gestational diabetes mellitus of two Brazilian cohorts enrolled three decades apart.MethodsThe authors compared data of 2362 women from the Lifestyle INtervention for Diabetes Prevention After Pregnancy study (LINDA-Brasil, 2014–2017) to those of 359 women from the Estudo Brasileiro de Diabetes Gestacional study (EBDG, 1991–1995). Gestational weight gain was classified by the 2009 Institute of Medicine criteria; large and small for gestational age newborns, by the Intergrowth-21^st chart. Differences in birth weight means between pregestational BMI and gestational weight gain categories were evaluated by ANOVA; the associations of gestational weight gain and birth weight, through multivariable Poisson regression.ResultsIn LINDA-Brasil, women presented higher pregestational body mass index (30.3 ± 6.5 vs. 24.6 ± 4.4 kg/m²) and were frequently obese (46.4 vs. 11.1%) compared to those of the EBDG. In the EBDG, gestational weight gain was larger (11.3 ± 6.1 vs. 9.2 ± 7.6 kg) and rates of small for gestational age higher (7.5 vs. 4.5%) compared to LINDA-Brasil. In LINDA-Brasil, excessive gestational weight gain was associated to macrosomia (adjusted relative risk [aRR]: 1.59, 95% CI 1.08–2.35) and large for gestational age (aRR: 1.40; 95% CI 1.05–1.86); less gain increased the risk of low birth weight (aRR: 1.66; 95% CI 1.05–2.62) and small for gestational age (aRR: 1.79; 95% CI 1.03–3.11). These associations were similar in the EBDG, although not statistically significant.ConclusionsImprovements in gestational weight gain and rates of small for gestational age occurred over time in gestational diabetes mellitus pregnancies, accompanied by a worsening in maternal weight profile. This highlights the nutritional transition during this period and the importance of avoiding excessive gestational weight gain as well as promoting adequate weight before conception.     

Childhood maltreatment and the risk of pre‐pregnancy obesity and excessive gestational weight gain

The objective of this study was to estimate whether maternal history of childhood maltreatment was associated with pre‐pregnancy obesity or excessive gestational weight gain. Pregnant women (n = 472) reported pre‐pregnancy weight and height and gestational weight gain and were followed up to 16 years post‐partum when they reported maltreatment on the Childhood Trauma Questionnaire (CTQ). CTQ score ranged from no maltreatment (25) to severe maltreatment (125). Prenatal mental health modified the association between CTQ score and maternal weight (P < 0.15), and thus stratified models are presented. After adjusting for race, prenatal tobacco, marijuana and alcohol use, a one standard deviation (1 SD) increase in CTQ score was associated with a 45% increase in the risk of pre‐pregnancy obesity among the 141 women with elevated anxiety (≥75th percentile on the State Trait Anxiety Inventory) [relative risk, RR (95% confidence interval, CI): 1.45 (1.12, 1.88)], but was not associated among less anxious (<75th percentile) women [RR (95% CI): 1.10 (0.81, 1.51)]. Risk of excessive gestational weight gain was higher [adjusted RR (95% CI): 1.21 (1.07, 1.37)] with every 1 SD increase in CTQ score for anxious women. No association was observed for less anxious women [adjusted RR (95% CI): 0.89 (0.78, 1.02)]. Prenatal depression similarly modified the association between maltreatment and weight gain. Factors such as psychological status and traumatic experiences in early childhood may contribute to pre‐pregnancy obesity and excessive gestational weight gain.     

Dietary diversity and diet quality with gestational weight gain and adverse birth outcomes,results from a prospective pregnancy cohort study in urban Tanzania

Healthy maternal diets during pregnancy are an important protective factor for pregnancy‐related outcomes, including gestational weight gain (GWG) and birth outcomes. We prospectively examined the associations of maternal dietary diversity and diet quality, using Minimum Dietary Diversity for Women (MDD‐W) and Prime Diet Quality Score (PDQS), with GWG and birth outcomes among women enrolled in a trial in Tanzania (n = 1190). MDD‐W and PDQS were derived from a baseline food frequency questionnaire. Women were monthly followed until delivery, during which weight was measured. GWG was classified based on the 2009 Institute of Medicine guidelines. Adverse birth outcomes were classified as low birth weight (LBW), small for gestational age, large for gestational age, and preterm birth. 46.2% participants had MDD‐W ≥ 5. Mean score of PDQS was 23.3. Maternal intakes of nuts, poultry, and eggs were low, whereas intakes of sugar‐sweetened beverages and refined grains were high. MDD‐W was not associated with GWG or birth outcomes. For PDQS, compared to the lowest tertile, women in the highest tertile had lower risk of inappropriate GWG (risk ratio [RR] = 0.93, 95% confidence interval [CI]: 0.87–1.00). Women in the middle tertile group of PDQS (RR = 0.72, 95% CI: 0.51–1.00) had lower risk of preterm birth. After excluding women with prior complications, higher PDQS was associated with lower risk of LBW (middle tertile: RR = 0.55, 95% CI: 0.31–0.99, highest tertile: RR = 0.52, 95% CI: 0.29–0.94; continuous per SD: RR = 0.77, 95% CI: 0.60–0.99). Our findings support continuing efforts to improve maternal diet quality for optimal GWG and infant outcomes among Tanzanian women.     

Risk factors for small for gestational age

BACKGROUND: The purpose of the paper was to determine the risk factors for small-for-gestational-age (SGA) infants at full term, in Japan. METHODS: The study was conducted at four hospitals and clinics in the Tokyo metropolitan area. A retrospective review of 2972 mothers and their infants born from singleton pregnancies at any time during the years 2002 and 2003 was conducted. RESULTS: Of these women, 8.4% gave birth to SGA infants. The proportion of SGA infants was significantly higher among heavy smokers (>10 cigarettes/day; 13.7%, P < 0.01). The odds ratio (OR) for SGA decreased significantly in proportion to the pregnancy body mass index (OR, 0.89; 95% confidence interval [CI]: 0.84-0.94, P < 0.001). The OR of SGA for stratified maternal weight gain was 1.79 (95%CI: 1.24-2.58, P 12 kg. CONCLUSION: The present study clearly confirms the detrimental effect of a low prepregnancy body mass index, low maternal weight gain and maternal smoking during pregnancy on the incidence of SGA infants.     

Gestational weight gain and pregnancy outcomes: Findings from North Indian pregnancy cohort

Despite the high prevalence of inadequate gestational weight gain (GWG) and adverse pregnancy outcomes, very few studies have addressed the association between GWG and pregnancy outcomes in South Asia. Our objectives were to estimate the prevalence of GWG during the second and third trimesters within, below and above the Institute of Medicine (IOM) guidelines, and to estimate the effect of the rate and adequacy of GWG on gestational age at the time of delivery, weight, length, length-for-age z-score (LAZ), weight-for-length z-score (WLZ) and adverse pregnancy outcomes, namely prematurity, small-for-gestational age (SGA), low birth weight (LBW), stunting and wasting at birth. We analysed data from the intervention group of the Women and Infants Integrated Interventions for Growth Study (WINGS), which is an ongoing individually randomized factorial design study. Of the 1332 women analysed, 40.2% [95% confidence interval (CI) 37.5 to 42.8] had GWG below the IOM guidelines. For every 100-g/week increase in GWG, birth weight increased by 61 g, birth length by 0.16 cm, LAZ score by 0.08 SD, WLZ score by 0.14 SD, and gestational age at birth by 0.48 days. Women with GWG below the IOM guidelines had a higher relative risk of adverse pregnancy outcomes (44% for LBW, 27% for SGA, 32% for stunting and 42% for wasting at birth) than women who had GWG within the IOM guidelines, except for prematurity. The association between GWG and LAZ scores at birth was modified by early pregnancy body mass index (BMI). GWG is a strong predictor of newborn anthropometric outcomes and duration of gestation but not prematurity.     

Patterns of gestational weight gain among women with obesity and its correlation with hypertensive disorders of pregnancy in Chinese women

Gestational weight management in obese women is critical in clinical work. Adverse pregnancy outcomes are associated with improper gestational weight gain (GWG). However, the pattern of GWG (PGWG) and its correlation with hypertensive disorders of pregnancy (HDP) in obesity are still unclear in China. This retrospective cohort study evaluates clinical data from 799 women through multivariate analyses and trajectory analyses. All the participants are stratified per first trimester weight gain category into three groups (Inadequate-1st, <0.5 kg; Adequate-1st, 0.5–2.0 kg; Excessive-1st, >2.0 kg) and PGWG refers to the weekly weight gain during each gestational period. GWG is positively associated with first trimester weight gain. 78.4% of the Excessive-1st participants have excessive total GWG, in contrast to Inadequate-1st (32.7%) and Adequate-1st (48.2%). After 20 weeks, the weekly weight gain rapidly accelerates, and 77.3% have a weekly weight gain exceeding the Institute of Medicine recommendations. Trajectory analysis of weekly weight gain based on HDP shows two separate weight gain curves after 20 weeks in women with and without a high risk of HDP. Especially in Excessive-1st participants, weekly weight gain after 20 weeks over 0.32 kg/w is positively related to the risk of HDP (<0.32 kg/w vs. 0.32–0.61 kg/w, adjusted odds ratios [aOR]: 2.999, 95% confidence interval [CI]: 1.054–8.537; <0.32 kg/w vs. >0.61 kg/w, aOR: 5.362, 95% CI: 1.719–16.729). In summary, the first trimester is critical for gestational weight management in obesity. Excessive weight gain during the first trimester and after 20 weeks predicts a high risk of HDP, which should be noted in clinical practice.     

Negative influence of maternal smoking during pregnancy on infant outcomes

BackgroundAccording to the INPES 2014 health barometer, the prevalence of smoking in pregnant women in France is the highest in Europe : 17.8% of expectant mothers who smoke continue to do so during pregnancy. Several epidemiological studies have confirmed multiple risks for tobacco-exposed infants (low birth weight; digestive, respiratory, neurological, and psychological disorders; obesity; type 1 diabetes).PurposeThis study compared a cohort of infants exposed to tobacco in utero (T + ) with those unexposed (T−). Birth weight, diet, presence of colic (ROME III criteria) and regurgitations (Vandenplas scale) were specifically analyzed.MethodsThis observational, cross-sectional, and multicenter survey was conducted in France by pediatricians and general practitioners from September 2016 to February 2017. Infants with a chronic pathology and those with parents under 18 years of age were excluded. The data were collected by the physician and by the mother through a self-administered questionnaire.ResultsA total of 452 physicians recruited 759 T+ and 741 T- infants in the study. The mean birth weight of T+ infants was significantly lower (3.1 ± 0.5 kg [WHO z-score -0.476 ± 1.081]) than that of T− infants (3.3 ± 0.5 kg [0.033 ± 0.965]; P < 0.001). At the time of leaving the maternity facility, 47.7% of T+ infants were breastfed by their mother compared with 70.1% of T− infants. The median reported duration of breastfeeding was 1 month vs. 2 months for T+ and T− infants, respectively. Colic was significantly more common in T+ than in T− infants: 25.6% vs. 12.3% according to the ROME III criteria, and 45.7% vs. 29.7% according to the doctor's opinion (P < 0.001 for both). In the T+ group, cases of regurgitation (63.6% vs. 56.5%; P = 0.005), respiratory disorder (6.3% vs. 2.4%, P < 0.001), and bronchiolitis (6.5% vs. 3.0%; P = 0.001) were also more frequent.ConclusionThis study confirms that maternal smoking during pregnancy is associated with health risks; exposed infants had significantly more digestive/respiratory symptoms and lower birth weight than unexposed infants. Preventive and educational actions need to be further strengthened in the face of this public health problem.