Low birth weight: Case definition &amp; guidelines for data collection, analysis, and presentation of maternal immunization safety data

Cutland, Clare; Lackritz, Eve; Moore, Tamala Mallett; Bardají, Azucena; Chandrasekaran, Ravichandran; Lahariya, Chandrakant; Nisar, Muhammed Imran; Tapia, Milagritos D.; Pathirana, Jayani; Kochhar, Sonali; Muñoz, Flor M.

doi:10.1016/j.vaccine.2017.01.049

Cited by 337 publications

(272 citation statements)

References 48 publications

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“…All obstetricians participating in the study agreed on the definitions of the above clinical terms, according to published data and their individual experience. [22][23][24] Detailed descriptions of the clinical parameters used in our study are provided as Supplementary Material (S2).…”

Section: Maternal and Neonatal Peripartum Coursementioning

confidence: 99%

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

Bourgioti

Zafeiropoulou

Fotopoulos

et al. 2018

Magnetic Resonance Imaging

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Background Placenta accreta spectrum (PAS) disorders may be associated with significant mortality and morbidity for both mother and fetus. Purpose/Hypothesis To identify MRI risk factors for poor peripartum outcome in gravid patients at risk for PAS. Study Type Prospective. Population One hundred gravid women (mean age: 34.9 years) at third trimester, with placenta previa. Field Strength/Sequence T2‐SSTSE (single‐shot turbo spin echo), T2‐TSE, T1‐TSEFS (TSE images with fat‐suppression) at 1.5T. Assessment Fifteen MRI features considered indicative of PAS were recorded by three radiologists and were tested for any association with the following adverse peripartum maternal and neonatal events: increased operation time, profound blood loss, hysterectomy, bladder repair, ICU admission, prematurity, low birthweight, and 5‐minute APGAR score <7. Statistical Tests Kappa (K) coefficients were computed as a measure of agreement between intraoperative information/histology and MRI results as well as for interobserver agreement; chi‐square and Fisher's exact tests were used to explore the association of the MRI signs with clinical complications. A score was calculated by adding all recorded MRI signs and its predictive ability was tested using receiver operating characteristic (ROC) analysis, against all complications, separately; odds ratios (ORs) for optimal cutoffs were determined with logistic regression analysis. Results There was excellent agreement (K >0.75, P < 0.001) between MRI and intraoperative findings for invasive placenta, bladder and parametrial involvement. Intraplacental T2 dark bands, myometrial disruption, uterine bulge, and hypervascularity at the utero‐placental interface or parametrium, showed significant association (P < 0.005) with poor clinical outcome for both mother and fetus. The MRI score showed significant predictive ability for each adverse maternal event (area under the curve [AUC]: 0.85–0.97, P < 0.001). The presence of ≥3 MRI signs was the cutoff point for a complicated delivery (OR: 19.08, 95% confidence interval [CI]: 6.05–60.13) and ≥6 MRI signs was the cutoff point for massive bleeding (OR: 90.93, 95% CI: 11.3–729.23), hysterectomy (OR: 72.5, 95% CI: 17.9–293.7), or extensive bladder repair (OR: 58.74, 95% CI: 7.35–469.32). The MRI score was not significant for predicting adverse neonatal events including preterm delivery (P = 0.558), low birthweight (P = 0.097), and 5‐minute Apgar score (P = 0.078). Data Conclusion Preoperative identification of specific MRI features may predict peripartum course in high‐risk patients for PAS. Level of Evidence: 1 Technical Efficacy: Stage 5 J. Magn. Reson. Imaging 2019;50:602–618.

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Section: Maternal and Neonatal Peripartum Coursementioning

confidence: 99%

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

Bourgioti

Zafeiropoulou

Fotopoulos

et al. 2018

Magnetic Resonance Imaging

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“…Term LBW were defined as full-term babies weighing <2500 grams at birth, as per standard definitions by the World Health Organization (30,31) .…”

Section: Birth Outcome Assessmentmentioning

confidence: 99%

Prenatal exposure to particulate matter (PM_2.5) and low birth weight in a Sri Lankan birth cohort

Tipre

Wickremesinghe

Nandasena

et al. 2018

Preprint

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Background.About 74% of the Sri Lankan population use biomass in the form of unprocessed wood as the primary cooking fuel. A growing body of evidence from meta-analyses and individual studies although limited by few prospective studies, report that prenatal exposure to particulate matter of size 2.5 µm (PM2.5) emissions from biomass fuel burning may be associated with low birth weight (LBW) (<2500 grams). We present results examining the association between PM2.5 and LBW in context of a birth cohort study in Sri Lanka. Methods.We followed 545 pregnant women from their first trimester until delivery and assessed outcomes at birth. Exposure to household air pollution (HAP) from biomass smoke was assessed using detailed questionnaire about fuel type, kitchen characteristics and cooking practices; two-hour measurements of kitchen PM2.5 were collected in a subset of households (n=304, 56%). Data from questionnaires and measured PM2.5 were used to estimate two-hour kitchen PM2.5 concentrations in unmeasured households. Data on covariates related to household characteristics, socio-demographic, maternal health and lifestyle factors were collected from baseline interviews. We performed linear and logistic regression analysis to evaluate the association between HAP exposure, and birth weight and LBW. Results.Of the total, 78% of the households used wood as primary or secondary fuel (n=425); households using wood had four-fold higher PM2.5 levels compared to those using LPG. In linear regression models, we found an inverse association between a 10-unit increase in PM2.5 and birth weight (β, -0.03; SE, 0.02; p, 0.06) adjusted for covariates. Similarly, categorical HAP exposure (>50% wood use) was significantly associated with birth weight as compared to LPG users (β, -0.13; SE, 0.06; p, 0.0331). In logistic regression models, a 10-unit increase in PM2.5 was associated with increased odds for LBW (OR, 1.26; 95%CI, 1.02-1.55; p, 0.0355), while the prevalence of LBW was highest among >50% wood users (OR, 2.82; 95%CI, p, 0.0124), as compared to those using >50% LPG with wood and only LPG users. The association between HAP exposure and birth weight/LBW were consistent among term births (n=486). Conclusions.The finding of a significant association between prenatal PM2.5 exposure and LBW in a lowmiddle income country (LMIC) setting where competing risk factors are minimal fills a gap in the body of evidence linking HAP from biomass smoke to LBW. These results underscore the crucial need to implement prevention and reduction of HAP exposure in LMICs where the HAP burden is high.

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“…Cardiorespiratory fitness A significant increase in VO 2max from the baseline values was observed after 10 weeks of the PA program (F (1,33) Z 28.501; P < 0.001; h p 2 Z 0.463), but the magnitude of the increase was similar between birth weight groups (main effect birth weight interaction PA program: F (1,33) Z 0.144, P Z 0.707) and no significant main effect of birth weight was observed (F (1,33) Z 1.609, P Z 0.213) ( Table 2).…”

Section: Impact On Cardiovascular Parametersmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

“…Low birth weight (LBW) is a leading public health concern, particularly in developing countries, where LBW rates have increased in recent years [1]. Newborns with LBW are known to have a higher risk of mortality and morbidity from birth through the first month of life [1]. Importantly, LBW is also associated with an increased risk of developing hypertension and cardiometabolic complications later in life, with the development of vascular abnormalities starting early in childhood [2e5].…”

Section: Introductionmentioning

confidence: 99%

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Physical activity intervention improved the number and functionality of endothelial progenitor cells in low birth weight children

Souza

Meneck

Fernandes

et al. 2020

Nutrition, Metabolism and Cardiovascular Diseases

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Background and aims: The purpose of this study was to investigate whether an intervention with physical activity (PA) would promote positive effects on the angiogenic factors, mobilization, and functionality of circulating endothelial progenitor cells (EPCs) in children with low birth weight (LBW). Methods and results: Thirty-five children participated in a 10-week PA program (intensity: 75 e85% of heart rate reserve, frequency: four times/week, and duration: 45 min).

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Low birth weight: Case definition & guidelines for data collection, analysis, and presentation of maternal immunization safety data

Cited by 337 publications

References 48 publications

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

Prenatal exposure to particulate matter (PM_2.5) and low birth weight in a Sri Lankan birth cohort

Physical activity intervention improved the number and functionality of endothelial progenitor cells in low birth weight children

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Low birth weight: Case definition & guidelines for data collection, analysis, and presentation of maternal immunization safety data

Cited by 337 publications

References 48 publications

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

Prenatal exposure to particulate matter (PM2.5) and low birth weight in a Sri Lankan birth cohort

Physical activity intervention improved the number and functionality of endothelial progenitor cells in low birth weight children

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Prenatal exposure to particulate matter (PM_2.5) and low birth weight in a Sri Lankan birth cohort