scholarly journals Risk factors for the increasing trend in low birth weight among live births born by vaginal delivery, Brazil

2000 ◽  
Vol 34 (6) ◽  
pp. 596-602 ◽  
Author(s):  
Marco A Barbieri ◽  
Antônio AM Silva ◽  
Heloisa Bettiol ◽  
Uilho A Gomes
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Cesarean Section ◽  
Vaginal Delivery ◽  
Preterm Infants ◽  
Southeastern Brazil ◽  
Socioeconomic Differences ◽  
Live Births ◽  
Vaginal Deliveries

OBJECTIVE: To identify risk factors for low birth weight (LBW) among live births by vaginal delivery and to determine if the disappearance of the association between LBW and socioeconomic factors was due to confounding by cesarean section. METHODS: Data were obtained from two population-based cohorts of singleton live births in Ribeirão Preto, Southeastern Brazil. The first one comprised 4,698 newborns from June 1978 to May 1979 and the second included 1,399 infants born from May to August 1994. The risks for LBW were tested in a logistic model, including the interaction of the year of survey and all independent variables under analysis. RESULTS: The incidence of LBW among vaginal deliveries increased from 7.8% in 1978--79 to 10% in 1994. The risk was higher for: female or preterm infants; newborns of non-cohabiting mothers; newborns whose mothers had fewer prenatal visits or few years of education; first-born infants; and those who had smoking mothers. The interaction of the year of survey with gestational age indicated that the risk of LBW among preterm infants fell from 17.75 to 8.71 in 15 years. The mean birth weight decreased more significantly among newborns from qualified families, who also had the highest increase in preterm birth and non-cohabitation. CONCLUSIONS: LBW among vaginal deliveries increased mainly due to a rise in the proportion of preterm births and non-cohabiting mothers. The association between cesarean section and LBW tended to cover up socioeconomic differences in the likelihood of LBW. When vaginal deliveries were analyzed independently, these socioeconomic differences come up again.

scholarly journals Risk Factors for Low Birth Weight Among Live Births from Vaginal Deliveries in an Urban Area of Southeast Brazil 545

1998 ◽  
Vol 43 ◽  
pp. 95-95
Author(s):  
Antonio AM Silva ◽  
Marco A Barbieri ◽  
Heloisa Bettiol ◽  
Marisa M Mussi-Pinhata ◽  
Uilho A Gomes
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Urban Area ◽  
Live Births ◽  
Southeast Brazil ◽  
Vaginal Deliveries

Risk Factors Impacting Incomplete Immunization in Low Birth Weight and Preterm Infants

2018 ◽  
Author(s):  
Matt Nestander ◽  
Jay Dintaman ◽  
Apryl Susi ◽  
Gregory Gorman ◽  
Elizabeth Hisle-Gorman
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants

scholarly journals Prevalence, mortality and risk factors associated with very low birth weight preterm infants: an analysis of 33 years

2020 ◽  
Vol 96 (3) ◽  
pp. 327-332
Author(s):  
Julia Damiani Victora ◽  
Mariangela Freitas Silveira ◽  
Cristian Tedesco Tonial ◽  
Cesar Gomes Victora ◽  
Fernando Celso Barros ◽  
...  
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
Very Low Birth Weight ◽  
Factors Associated

scholarly journals Maternal risk factors for low birth weight of neonates in al- diwaniyah province, iraq

2019 ◽  
Vol 10 (3) ◽  
pp. 1904-1909
Author(s):  
Adel J. Hussein
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Prenatal Care ◽  
Low Birth Weight ◽  
Cesarean Section ◽  
Teaching Hospital ◽  
Maternal Age ◽  
Maternal Risk Factors ◽  
Socioeconomic Condition ◽  
Maternal Risk

The LBW infants as weighting less than 2.5kg at birth. Infants with low birth weight are probable to suffer medical troubles and delay development from the time of delivery to adult life. This study was planned to discover the prevalence of LBW infants in Ad-Diwaniyah city (Iraq) and the maternal risk factors, which contribute to the occurrence of low birth weight, and it is rated and what the suitable recommendations can be made to prevent this problem.  Unfortunately, in Iraq, several studies reveal an increase in the delivery of LBW infants in the last years. The present study was aimed to identify the prevalence of LBW and possible maternal factors in children, teaching hospital in Al-Diwaniyah city during the period of the beginning of February 2017 to February 2018. This is a cross-sectional survey held out in Pediatric, teaching hospital through 1012 pregnant mothers giving a live LBW. Whole children weight on a weighing machine. Data was collected through the interview of mothers. Maternal age and education level, socioeconomic condition, number of prenatal visits, interpregnancy interval and maternal diseases, and infant gender were registered in questionnaire format. The result of the current study detects that the rate of LBW was 20.2%. The highest percentage of them (LBW) was preterm 67.4% and full, term (IUGR) 32.5%. 61.5% of the children in the LBW group were male, and 38.4% were female.  Besides the outcome indicates that there are many important risk factors contributed to the incidence of LBW, these are; multiple pregnancies were found to be 66.8% of LBW infants,  maternal age 21 – 35 years (39.7%),  lack of Prenatal Care (60.3%),  delivery by cesarean section (70.6%),  mothers who illiterate (64.8%),  a large number of mothers from the rural area (68.6%),  the presence of maternal diseases (63.5%),  all these are considered a risk factor. The current study demonstrates the essential elements give rise to low birth weight in neonates are gestational age (preterm delivery), maternal education and age, multiple births, regular prenatal care, cesarean section, and bad obstetric history.

scholarly journals Late hyponatremia: its risk factors in preterm infants and short-term outcome

2021 ◽  
Vol 43 (5) ◽  
pp. 434-443
Author(s):  
Manizheh Gharehbaghi ◽  
Sadollah Yegane Dust ◽  
Elmira Naseri
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
Bronchopulmonary Dysplasia ◽  
Gestational Age ◽  
Short Term ◽  
Term Outcome ◽  
Short Term Outcome ◽  
Osteopenia Of Prematurity

Background. Prematurity is one of the major health problems and common causes of neonatal mortality. One of the complications of premature infants is hyponatremia. The effect of hyponatremia on the prognosis of preterm infants has not been well studied. This study aimed to evaluate infants with late hyponatremia, its risk factors, and prognosis. Methods. This descriptive analytical study reviewed preterm infants (<34 weeks) admitted to Al-Zahra or Children’s Hospital in Tabriz for one year (2019). Neonates diagnosed with hyponatremia after the second week were identified and evaluated for risk factors and short-term outcome. Results. A total of 186 neonates were studied. The mean gestational age of the neonates was 30 weeks (first and third quarters = 29-32 weeks). 101 (54.3%) infants were male. The route of delivery was the cesarean section in 60.7% of cases. Late hyponatremia was present in 50 (26.8 %) infants. Gestational age and birth weight were significantly lower in infants with hyponatremia than in the control group. Multivariate analysis showed that low birth weight, the use of prenatal steroids, and inappropriate weight for gestational age status independently predict the incidence of late hyponatremia. There was a significant relationship between the presence of prolonged late hyponatremia (over 7 days) and bronchopulmonary dysplasia and osteopenia of prematurity. However, no significant association was found between the presence of prolonged late hyponatremia in preterm infants with the length of hospital stay and in-hospital mortality. Conclusion. Based on the findings of this study, low birth weight, prenatal steroid use, and lack of appropriate weight for gestational age were risk factors for late hyponatremia in preterm infants. Prolonged hyponatremia is associated with bronchopulmonary dysplasia and osteopenia of prematurity

scholarly journals First-year growth of 834 preterm infants in a Chinese population: a single-center study

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ying Deng ◽  
Fan Yang ◽  
Dezhi Mu
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
First Year ◽  
Poor Growth ◽  
Vlbw Infants ◽  
Catch Up ◽  
First Year Of Life ◽  
Prevalence Of Anemia

Abstract Background The aim of this study was to follow the growth and hematological indicators of preterm infants during their first year. Methods Neonates below 37 gestational weeks had routine follow-ups up through 1 year from January 2012 to December 2015 at West China 2nd University Hospital, Sichuan University. Weight, length and head circumference (HC) were measured monthly during the first 6 months, followed by monitoring every second month until 12 months. The catch-up growth defined as a gain of Z-score > 0.67 according to previous study. All preterm infants were prescribed iron prophylaxis based on national guideline. The hemoglobin concentration was examined at 6 and 12 months. Results Altogether, 132 very-low-birth-weight (VLBW), 504 low-birth-weight (LBW) and 198 normal-birth-weight (NBW) infants were followed. The rates of catch-up growth for weight, length and HC 12 months of corrected age (CA) were 22.6, 29.1 and 14.6%, respectively. SGA and VLBW infants showed higher catch-up growth rates. The overall prevalence of anemia was 6.8% at 6 months and 7.8% at 12 months. The Z-scores for weight-for-length, length and HC were lower in the VLBW and SGA preterm infant groups than in the other preterm groups throughout the first year of life. The incidences of stunting, microcephaly and wasting changed from 5, 1.3 and 3.7% to 2, 1.1, 0.9 and 2.4%, respectively, during the first year. However, the incidences of wasting and stunting were higher for the VLBW infants than for the LBW and NBW infants at 12 months (9.3% vs. 1.4%, p < 0.01; 9.3% vs. 1%, p < 0.01,respectively; 4.7% vs. 0.8%, p < 0.01, 4.7% vs. 0%, p < 0.01,respectively). Similar results were observed between SGA and AGA infants (8.7% vs. 1.5%, p < 0.01; 5.8% vs. 0.4%, p < 0.01). Logistic regression revealed SGA and VLBW as risk factors for poor growth (WLZ < -2SD) at 12 months (OR = 5.5, 95% CI: 2.1–14.8, p < 0.01: OR = 4.8, 95% CI: 1.8–12.8, p < 0.01, respectively). Conclusion The VLBW and SGA preterm infants showed significant catch-up growth during their first year of life. However, SGA and VLBW were risk factors for poor growth during the preterm infants’ first year of life. Prophylactic iron supplementation in preterm infants appears to reduce the prevalence of anemia.

scholarly journals Which factors could explain the low birth weight paradox?

2006 ◽  
Vol 40 (4) ◽  
pp. 648-655 ◽  
Author(s):  
Antônio Augusto Moura da Silva ◽  
Heloisa Bettiol ◽  
Marco Antonio Barbieri ◽  
Luiz Gustavo Oliveira Brito ◽  
Márcio Mendes Pereira ◽  
...  
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Cesarean Section ◽  
Maternal Smoking ◽  
Maternal Age ◽  
Smoking Habit ◽  
Northeastern Brazil ◽  
Southeastern Brazil ◽  
Study Objective ◽  
The Difference

OBJECTIVE: Low birth weight children are unusual among well-off families. However, in Brazil, low birth weight rate was higher in a more developed city than in a less developed one. The study objective was to find out the reasons to explain this paradox. METHODS: A study was carried out in two municipalities, Ribeirão Preto (Southeastern Brazil) and São Luís (Northeastern Brazil), which low birth weight rates were 10.7% and 7.6% respectively. Data from two birth cohorts were analyzed: 2,839 newborns in Ribeirão Preto in 1994 and 2,439 births in São Luís in 1997-1998. Multiple logistic regression analysis was performed, adjusted for confounders. RESULTS: Low birth weight risk factors in São Luís were primiparity, maternal smoking and maternal age less than 18 years. In Ribeirão Preto, the associated variables were family income between one and three minimum wages, maternal age less than 18 and equal to or more than 35 years, maternal smoking and cesarean section. In a combined model including both cohorts, Ribeirão Preto presented a 45% higher risk of low birth weight than São Luís. When adjusted for maternal smoking habit, the excess risk for low birth weight in Ribeirão Preto compared to São Luís was reduced by 49%, but the confidence interval was marginally significant. Differences in cesarean section rates between both cities contributed to partially explain the paradox. CONCLUSIONS: Maternal smoking was the most important risk factor for explaining the difference in low birth weight between both cities. The other factors contributed little to explain the difference in low birth weight rates.

scholarly journals Predictors of mortality in extramural very low birth weight neonates: a prospective observational study

2020 ◽  
Vol 8 (1) ◽  
pp. 107
Author(s):  
Rajkumar M. Meshram ◽  
Ruchi A. Gedam ◽  
Shivangi Garg ◽  
Kalyani S. Kadu ◽  
Madhabika R. Chakraborty ◽  
...  
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Respiratory Distress ◽  
Vaginal Delivery ◽  
Very Low Birth Weight ◽  
Mode Of Delivery ◽  
Home Delivery ◽  
Male Gender ◽  
Independent Risk Factors

Background: Over the past few decades, the burdens of very low birth weight (VLBW) preterm infants are increasing due to advances in obstetrics and perinatal services. Objectives of the study were to assess predictors of mortality of extramural VLBW neonates.Methods: Prospective one year cohort study was undertaken on VLBW neonates fulfilling the inclusion criteria at a tertiary institute. Maternal and neonatal demographic data were analyzed.Results: Male to female ratio was 1.26:1. One hundred and thirty seven (74.9%) neonates had birth weights from 1000-1499 g while 46 (25.1%) had birth weights <1000 g (ELBW) and 90% were preterm. One hundred and sixty five (90.2%) neonates were admitted in early neonatal period. Anaemia was the commonest maternal illness and preeclampsia/eclampsia was the most common obstetric complication. Respiratory distress, temperature instability and lethargy were common clinical presentations. Respiratory distress, sepsis and perinatal asphyxia were common diagnoses on admission. Mortality rate in VLBW neonates was 59.6% and respiratory distress was the commonest cause of death. Male gender (p=0.01), home delivery (p=0.04), vaginal delivery (p=0.05) and positive septic screen (p=0.003) had significantly higher mortality while mode of delivery (aOR 0.27 CI 0.086-0.83 p=0.02) and positive septic screen (aOR 4.0 CI 1.67-9.84 p=0.002) were independent risk factors for mortality.Conclusions: In extramural VLBW neonates, male gender, home delivery, vaginal delivery and positive septic screen had significantly higher mortality whilst mode of delivery and positive septic screen were independent risk factors for mortality.

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