Hematological status and pregnancy outcomes

Garn, Stanley M.; Keating, Mark T.; Falkner, Frank

doi:10.1093/ajcn/34.1.115

Cited by 91 publications

(69 citation statements)

References 4 publications

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“…result >3 standard deviations (SD) higher than the mean of the reference population (i.e., a Hb concentration of >15.0 g/dL or a Hct of >45.0%), particularly in the second trimester, likely indicates poor blood volume expansion (72 ). High Hb concentration or Hct has been associated with hypertension and poor pregnancy outcomes (e.g., fetal growth retardation, fetal death, preterm delivery, and low birthweight) (75)(76)(77)(78). In one study, women who had a Hct of ≥43% at 26-30 weeks' gestation had more than a twofold increased risk for preterm delivery and a fourfold increased risk for delivering a child having fetal growth retardation than did women who had a Hct of 33%-36% (76 ).…”

Section: Hb Concentration and Hematocritmentioning

confidence: 99%

Prevalence of iron deficiency and anemia among healthy women of reproductive age in Bhaktapur, Nepal

et al. 2006

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Section: Hb Concentration and Hematocritmentioning

confidence: 99%

Prevalence of iron deficiency and anemia among healthy women of reproductive age in Bhaktapur, Nepal

et al. 2006

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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] .…”

Section: Consecuencias De La Deficiencia De Hierro En El Embarazounclassified

“…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. Por otro lado se ha observado un aumento de parto prematuro, bajo peso de nacimiento y muerte fetal con valores altos de hematocrito/ hemoglobina (>13g/dL) 23,24,31,32 . En las relaciones en forma de "U" habitualmente los factores que actúan en los extremos son diferentes.…”

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 combination of these factors along with low dietary iron and increased requirements in infancy, adolescence and pregnancy can contribute to IDA (Fomon et al, 2003). The association between trichuriasis and IDA has been well documented (Otto, 1935;Burrows and Lillis, 1964;Layrisse et al, 1967;Robertson et al, 1992;Ramdath et al, 1994;Brito et al, 2003Brito et al, , 2006, as well as an association of IDA with premature delivery, low birth weight, altered gastrointestinal function, perinatal morbidity, decreased growth (Garn et al, 1981;Steer, 2000;Hamalainen et al, 2003), changes in behaviour, mental and motor development (Beard, 2003), lower iron transference to the foetus (Ramakrishnan, 2001), reduced physical work capacity (Haas and Brownlie, 2001) and an impaired immune system (Dallman, 1987). In Mexico, trichuriasis has remained an important human helminthiasis since the 1950s (Carrada-Bravo, 1988;Tay et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Trichuriasis and low-iron status in schoolchildren from Northwest Mexico

et al. 2010

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Background/Objectives: The aim of this study was to investigate the association between trichuriasis and iron status in rural schoolchildren from Northwest Mexico. Subjects/Methods: A total of 73 schoolchildren (37 boys, 36 girls) between the ages of 6 and 10 years were voluntarily recruited from the public primary school of the rural community of El Higueral in Culiacan, Sinaloa (Northwest Mexico) for a cross-sectional study with a longitudinal follow-up of 5 weeks. Data were collected on socioeconomic status, anthropometry, haematological and biochemical indices of iron status, daily iron intake, and prevalence and intensity of trichuriasis. Multiple regression models, independent t-test and paired t-test were used to analyse the association between trichuriasis and iron status in cross-sectional and longitudinal samples, respectively. Adjusted models were tested for linear regression assumptions using residual plots. Results: The mean age of the Trichuris-free and Trichuris-infected groups was 7.7±1.3 and 7.7±1.5 years respectively (P ¼ 0.92). The height for age was significantly higher in the Trichuris-free group than the Trichuris-infected group (P ¼ 0.02). No differences were found in the socioeconomic variables between the two groups. At baseline, significantly higher concentrations of haemoglobin, haematocrit, blood cell count (RBC) and serum iron were measured in the Trichuris-free group compared with the Trichuris-infected children (Po0.05). An association was found between trichuriasis and haemoglobin adjusted for socioeconomic variables, age and sex. Haemoglobin, RBC and serum ferritin concentrations were significantly increased in the infected children 5 weeks after treatment (Po0.05). Conclusions: Trichuriasis could be a risk factor for low-iron status in the schoolchildren of Northwest Mexico.

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Hematological status and pregnancy outcomes

Cited by 91 publications

References 4 publications

Prevalence of iron deficiency and anemia among healthy women of reproductive age in Bhaktapur, Nepal

Prevalence of iron deficiency and anemia among healthy women of reproductive age in Bhaktapur, Nepal

Causas y consecuencias de la deficiencia de hierro

Trichuriasis and low-iron status in schoolchildren from Northwest Mexico

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