Relation of Hemoglobin Measured at Different Times in Pregnancy to Preterm Birth and Low Birth Weight in Shanghai, China

Zhou, Li; Yang, Wen; Hua, Jia Zeng; Deng, Chunqin; Tao, Xuguang Grant; Stoltzfus, Rebecca J.

doi:10.1093/oxfordjournals.aje.a009577

Cited by 172 publications

(142 citation statements)

References 22 publications

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“…The prevalence of anemia in our study was similar to previous reports conducted in Korea (Lim and Kim, 1998;Yu et al, 1999) and in Asia (Hui et al, 1995). Anemia or iron deficiency during pregnancy is associated with intrauterine growth retardation, premature birth, low birth weight, increased labor time, higher risk of infection, elevated maternal and prenatal mortality, muscle dysfunction and low physical capacity (Murphy et al, 1986;Lu et al, 1991;Scholl and Hediger, 1994;Singh et al, 1998;Zhou et al, 1998;Yip, 2000). Lone et al (2004) reported the association between low maternal Hb level and Apgar score o5 at 1 min, which is an index of health status of newborn babies.…”

Section: Discussionmentioning

confidence: 99%

Iron status and its association with pregnancy outcome in Korean pregnant women

Lee¹,

Kim

et al. 2006

Eur J Clin Nutr

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Objective: The purpose of this study was to assess the prevalence of iron deficiency anemia among Korean pregnant women and to assess the association between maternal hemoglobin (Hb) level and pregnancy outcome. Design: A longitudinal study. Setting: Ewha Womans University Hospital, Seoul, Korea. Subjects: A total of 248 normal pregnant women of 24-28 weeks gestation and 190 babies born to the pregnant subjects. Methods: Maternal anthropometry, blood parameters and pregnancy outcomes were measured. Results: Mean Hb, serum iron concentration, transferrin saturation and total iron binding capacity of the subjects were 11.4 g/dl, 89.4 mg/dl, 18.7% and 484.6 mg/dl, respectively, and 30.2% of the subjects were anemic judged by Hb concentration of o10.5g/dl. When subjects were classified into tertile groups based on Hb levels, the lowest tertile (HbT1) group had significantly lower concentrations of cord serum iron and albumin than those in the highest tertile (HbT3) group. Newborn infants from the HbT1 group had significantly higher rates of preterm delivery, low birth weight and low Apgar scores than those in other groups. Logistic regression analysis showed that maternal serum albumin and Hb level were the most important predictive variables for low birth weight. Conclusions: A substantial proportion of Korean pregnant women were at risk of anemia. Infants born to women with a low Hb level showed a lower birth weight, height and Apgar scores.

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Section: Discussionmentioning

confidence: 99%

Iron status and its association with pregnancy outcome in Korean pregnant women

Lee¹,

Kim

et al. 2006

Eur J Clin Nutr

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“…Existe una asociación entre el hematocrito/hemoglobina materna, parto prematuro (<37 semanas de gestación), bajo peso de nacimiento (<2.500g) y morbi-mortalidad perinatal [23][24][25][26][27][28][29][30] . Hay evidencias que la asociación entre hemoglobina baja y parto prematuro se da sólo en los dos primeros trimestres de gestación 24,[27][28][29][30] . Por otra parte existe una relación entre la severidad de la anemia y el curso del embarazo.…”

Section: Consecuencias De La Deficiencia De Hierro En El Embarazounclassified

“…Por otra parte existe una relación entre la severidad de la anemia y el curso del embarazo. Zhou et al 28 , en 829 embarazadas, demostraron una asociación entre la severidad de la anemia en el primer trimestre y el riesgo de bajo peso de nacimiento y parto prematuro. El riesgo de parto prematuro aumentó en 1,6 veces con hemoglobina entre 10g/dL y 10,9g/dL, en 2,6 veces con hemoglobina entre 9g/dL y 9,9g/dL y en 3,7 veces con hemoglobina entre 6g/dL y 8,9g/ dl.…”

Section: Consecuencias De La Deficiencia De Hierro En El Embarazounclassified

Causas y consecuencias de la deficiencia de hierro

Olivares

Walter

2004

Rev. Nutr.

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La deficiencia de hierro es la deficiencia nutricional más prevalente y la principal causa de anemia a escala mundial. Además de las manifestaciones propias de la anemia, se han descrito otras manifestaciones no hematológicas tales como: disminución de la capacidad de trabajo físico y de la actividad motora espontánea, alteraciones de la inmunidad celular y de la capacidad bactericida de los neutrófilos, disminución de la termogénesis, alteraciones funcionales e histológicas del tubo digestivo, falla en la movilización de la vitamina A hepática, mayor riesgo de parto prematuro, bajo peso de nacimiento y de morbilidad perinatal, menor transferencia de hierro al feto, una disminución de la velocidad de crecimiento, alteraciones conductuales y del desarrollo mental y motor, velocidad de conducción más lenta de los sistemas sensoriales auditivo y visual, y reducción del tono vagal. La prevención de la deficiencia de hierro incluye cambios en los hábitos alimentarios, fortificación de los alimentos y la suplementación con hierro.

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“…A nationwide survey in China indicated that iron-deficiency anaemia is higher in the third trimester than earlier in pregnancy (16) . Anaemia in the first and second trimesters, but not in the third, is associated with low birth weight, preterm delivery and stillbirths (16)(17)(18) .…”

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confidence: 99%

Prevalence of anaemia among pregnant women in south-east China, 1993–2005

Jin¹,

Yeung²,

Cogswell³

et al. 2010

Public Health Nutr.

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Objective: To report the prevalence of anaemia by demographic characteristics and its secular trend over 13 years for south-east Chinese pregnant women, and to determine the focus of anaemia prevention in Chinese pregnant women. Design: Prospective study of the data on Hb concentration and other demographic information from a large-scale population-based perinatal health surveillance system in south-east China. Setting: Fourteen cities or counties in Jiangsu and Zhejiang provinces. Subjects: A total of 467 057 prenatal women who had participated in the perinatal health-care surveillance system and delivered babies from 1 January 1993 to 31 December 2005 and had a record of Hb in all three pregnancy trimesters. Results: The overall prevalence of anaemia among pregnant women was 39?6 % from 1993 to 2005. Anaemia prevalence increased from the first (29?6 %) to the second (33?0 %) and third (56?2 %) trimesters. The prevalence of anaemia was higher in villagers, in women with less education and in women with higher gravidity or parity. The prevalence of anaemia in all of the trimesters was higher in the spring, summer and autumn and lower in the winter. The prevalence decreased from 1993 to 2005, from 53?3 % to 11?4 % for the first trimester, 45?6 % to 22?8 % for the second trimester and 64?6 % to 44?6 % for the third trimester. Conclusions: The prevalence of anaemia among pregnant women in Jiangsu and Zhejiang provinces decreased substantially from 1993 to 2005. However, anaemia in the third trimester is still a severe public health problem among pregnant women in these areas.

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Relation of Hemoglobin Measured at Different Times in Pregnancy to Preterm Birth and Low Birth Weight in Shanghai, China

Cited by 172 publications

References 22 publications

Iron status and its association with pregnancy outcome in Korean pregnant women

Iron status and its association with pregnancy outcome in Korean pregnant women

Causas y consecuencias de la deficiencia de hierro

Prevalence of anaemia among pregnant women in south-east China, 1993–2005

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