Time-activity and daily mobility patterns during pregnancy and early postpartum – evidence from the MADRES cohort

Yi, Li; Yan, Xu; Eckel, Sandrah P.; O’Connor, Sydney; Cabison, Jane; Rosales, Miguel A.; Chu, Daniel; Chavez, Thomas; Johnson, Mark; Mason, Tyler B.; Bastain, Theresa M.; Breton, Carrie V.; Dunton, Genevieve F.; Wilson, John P.; Habre, Rima

doi:10.1016/j.sste.2022.100502

Cited by 7 publications

(4 citation statements)

References 45 publications

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“…Levels of OPFRs in indoor air and dust are usually higher than those in outdoor, and indoor settings are therefore an important exposure environment. , A French cohort study reported that pregnant women spent an average of more than 16.7 h per day indoors throughout their pregnancy . Similar results were found in several cohort studies from Spain, Canada, and Poland. − Previous research recommended that future exposure and epidemiological studies should reflect the increase of exposure from indoor environments . Exposure to OPFRs through air inhalation and dust ingestion for pregnant women requires more attention.…”

Section: Resultsmentioning

confidence: 73%

“…54−56 Previous research recommended that future exposure and epidemiological studies should reflect the increase of exposure from indoor environments. 57 Exposure to OPFRs through air inhalation and dust ingestion for pregnant women requires more attention. Considering that women primarily stay indoors during the third trimester and after giving birth, indoor air and dust may be an important exposure pathway for OPFRs.…”

Section: Exposure Pathways Of Opfrs To Pregnantmentioning

confidence: 99%

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Organophosphate Flame Retardants in Pregnant Women: Sources, Occurrence, and Potential Risks to Pregnancy Outcomes

Wang

Zhu

et al. 2023

Environ. Sci. Technol.

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Organophosphate flame retardants (OPFRs) are found in various environmental matrixes and human samples. Exposure to OPFRs during gestation may interfere with pregnancy, for example, inducing maternal oxidative stress and maternal hypertension during pregnancy, interfering maternal and fetal thyroid hormone secretion and fetal neurodevelopment, and causing fetal metabolic abnormalities. However, the consequences of OPFR exposure on pregnant women, impact on mother-to-child transmission of OPFRs, and harmful effects on fetal and pregnancy outcomes have not been evaluated. This review describes the exposure to OPFRs in pregnant women worldwide, based on metabolites of OPFRs (mOPs) in urine for prenatal exposure and OPFRs in breast milk for postnatal exposure. Predictors of maternal exposure to OPFRs and variability of mOPs in urine have been discussed. Mother-to-child transmission pathways of OPFRs have been scrutinized, considering the levels of OPFRs and their metabolites in amniotic fluid, placenta, deciduae, chorionic villi, and cord blood. The results showed that bis(1,3-dichloro-2-propyl) phosphate (BDCIPP) and diphenyl phosphate (DPHP) were the two predominant mOPs in urine, with detection frequencies of >90%. The estimated daily intake (EDIM) indicates low risk when infants are exposed to OPFRs from breast milk. Furthermore, higher exposure levels of OPFRs in pregnant women may increase the risk of adverse pregnancy outcomes and influence the developmental behavior of infants. This review summarizes the knowledge gaps of OPFRs in pregnant women and highlights the crucial steps for assessing health risks in susceptible populations, such as pregnant women and fetuses.

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Section: Resultsmentioning

confidence: 73%

Section: Exposure Pathways Of Opfrs To Pregnantmentioning

confidence: 99%

Organophosphate Flame Retardants in Pregnant Women: Sources, Occurrence, and Potential Risks to Pregnancy Outcomes

Wang

Zhu

et al. 2023

Environ. Sci. Technol.

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“…Previous studies have shown that pregnant women spend most of their time indoors (more than an average of 15 h/day), especially during the late stage of pregnancy, and the time–activity patterns might affect the actual exposure level. 91 – 93 Thus, using ambient temperature as a proxy may be biased. Unfortunately, we did not have information on the time length of staying indoors and outdoors for pregnant women.…”

Section: Discussionmentioning

confidence: 99%

Extreme Temperature Exposure and Risks of Preterm Birth Subtypes Based on a Nationwide Survey in China

Yang²,

Liu

et al. 2023

Environ Health Perspect

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Background: Previous studies have reported that ambient temperature may affect perinatal outcomes. However, whether extreme temperature affects the risk of preterm birth (PTB) remains controversial. Studies on the associations of extreme temperature with PTB subtypes are lacking. Objectives: We aimed to investigate the associations of extreme climate events with the risks of PTB and its subtypes, discerning possible modifiers. Methods: Data on all singleton deliveries were obtained from the China Labor and Delivery Survey (CLDS), a nationwide investigation implemented in 2015 and 2016. PTB was defined as gestational weeks and then categorized as early (24–34 wk) and late PTBs (35–36 wk), and clinical subtypes [spontaneous PTB, preterm premature rupture of the fetal membranes (PPROM), iatrogenic PTB]. Ambient temperature data were provided by the China National Weather Data Sharing System. Five heat indexes and five cold indexes were used to define heat waves and cold spells. Generalized linear mixed models with a random term by hospital unit were used to assess the associations of short-term prenatal extreme temperature exposure. The Cox proportional hazard regression model was applied to assess the nonlinear associations of low- or high-temperature exposure at the whole and different trimesters of pregnancy with the risk of PTB. Stratified analyses were conducted to assess the possible modification by geographic region and fetal sex. Results: A total of 70,818 singleton births from 96 hospitals in China were included, among which 4,965 (7.01%) were PTBs. Exposure to extreme cold events 1 wk before delivery was associated with an increased PTB risk, with an adjusted odds ratio (aOR) [95% confidence intervals (CIs)] of 1.07 (95% CI: 1.04, 1.10) and 1.06 (1.04, 1.09) for the total days when the daily average temperature below the fifth percentile (fifth-days) and the 10th percentile (10th-days), 1.18 (1.04, 1.34) for the cold spells when the daily average temperature below the fifth percentile for two consecutive days (fifth-2D), 1.09 (1.03, 1.16) and 1.12 (1.06, 1.19) for the cold spells when the daily average temperature below the 10th percentile for three and two consecutive days (10th-3D and 10th-2D), respectively. Results of extreme temperature exposure during 2 weeks before delivery showed similarly significant associations. The association between cold spells and PTB tended to be stronger for late PTB than for early PTB. Cold spells were mainly associated with spontaneous PTB and late PPROM. A stratified analysis indicated that pregnant women in western and northern regions tended to be more sensitive to cold spells, and pregnant women with a female fetus appeared to be at a higher risk of PTB when exposed to cold spells. Pregnant women in late pregnancy were more susceptible to extreme temperatures. No significant or stable association was found between heat waves and preterm birth. ...

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“…In addition, a wide spectrum of applications that rely on autonomous navigation, such as underwater exploration, unoccupied aerial vehicles, and autonomous cars, demonstrates the vulnerability of current technology . It is even more exposed in places where traditional support methods fail, for example, the use of navigation aids such as GPS [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] and many other advanced control [46][47][48][49][50] and estimation methods [51][52][53][54][55][56]. Acoustic tomography as a tool comes to limelight when a certain place is not viewable optically either because it is deep as in the case of the underwater environment or it is crowded as in the densely obstructed area [57][58][59][60][61][62][63].…”

Section: Introductionmentioning

confidence: 99%

Enhancing autonomous navigation: acoustic tomography through synthetic data modeling

Obaideen,

Faroukh,

AlShabi

2024

Autonomous Systems: Sensors, Processing, and Security for Ground, Air, Sea, and Space Vehicles and Infrastructure 2024

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This paper tackles the new utilization of acoustic tomography and synthetic data modeling to improve autonomous navigation systems, especially in environments where traditional navigation tools, such as GPS, are either restricted or absent. Thus, acoustic tomography, based on sound waves, as well as synthetic data modeling which creates unrealized but realistic navigation scenarios, seems to be a very useful way of enhancing accessible navigation in terms of reliability, precision, and adaptability. This research via a comprehensive literature review, review, and synthesis of current research articulates the promise of these technologies to transform navigation systems. It focuses on the approach in the integration of acoustic sensing with computational models in developing the system autonomy, covering the technological advancements and the problems. Besides, implications of the research to the whole range of applications from underwater exploration to urban autonomous vehicles specify the requirement of innovation and exploration development in this sphere. By providing a broad review and evaluation of the interactions of acoustic tomography with synthetic data modeling, this paper seeks to promote progress in autonomous navigation technologies, laying the groundwork for the future studies and engineering work in navigation through the world's most difficult environments.

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Time-activity and daily mobility patterns during pregnancy and early postpartum – evidence from the MADRES cohort

Cited by 7 publications

References 45 publications

Organophosphate Flame Retardants in Pregnant Women: Sources, Occurrence, and Potential Risks to Pregnancy Outcomes

Organophosphate Flame Retardants in Pregnant Women: Sources, Occurrence, and Potential Risks to Pregnancy Outcomes

Extreme Temperature Exposure and Risks of Preterm Birth Subtypes Based on a Nationwide Survey in China

Enhancing autonomous navigation: acoustic tomography through synthetic data modeling

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