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Maternal hemoglobin concentration and adverse pregnancy outcomes at low and moderate altitudes in Peru

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dc.contributor.author Gonzales Rengifo, Gustavo Francisco
dc.contributor.author Tapia Aguirre, Vilma Lucrecia
dc.contributor.author Gasco Tantachuco, Manuel Enrique
dc.contributor.author Carrillo, C.E.
dc.date.accessioned 2022-01-18T19:34:44Z
dc.date.available 2022-01-18T19:34:44Z
dc.date.issued 2012
dc.identifier.uri https://hdl.handle.net/20.500.12866/11195
dc.description.abstract Objective: To identify associations of maternal hemoglobin (Hb) with perinatal outcomes at low and moderate altitudes in Peru. Methods: Study of records with sequential information using perinatal database system. The study included 295 651 pregnant women with their products. Using multiple logistic regression analysis, we estimated the probability of stillbirths, preterm and small for gestational age (SGA) births associated with maternal Hb levels at low (01999 m) and moderate altitudes (20002999 m). Results: Maternal Hb decreased as pregnancy progressed from first to third trimester at both altitudes. Hb was higher at moderate than at low altitude (p<0.001). Risks for stillbirths increased with low maternal Hb (odds ratio [OR]: 1.39 for Hb 99.9; OR: 1.84 for Hb 88.9; OR: 3.25 for Hb 77.9; and OR: 7.8 for Hb <7g/dl); with Hb higher than 14.5g/dl (OR: 1.31) and with altitudes ≥2000 m (OR: 1.2). High preterm rates were also observed with low Hbs (OR: 1.16 for Hb 99.9; OR: 1.64 for Hb 88.9; OR: 2.25 for Hb 77.9; and OR:2.87 for Hb<7g/dl) and with Hb higher than 14.5g/dl (OR: 1.14). High SGA rates were observed in neonates with maternal Hb of 77.9 (OR: 1.35) and <7g/dl (OR:1.57), and higher than 14.5g/dl (OR: 1.33), and with moderate altitudes (OR: 1.12). The cut-off points for lower risks of stillbirth and preterm births was 10g/dl, and for SGA 9g/dl of hemoglobin. Conclusion: Low and high maternal Hb levels and moderate altitude were independent risk factors for adverse perinatal outcomes. en_US
dc.language.iso eng
dc.publisher Taylor and Francis
dc.relation.ispartofseries Journal of Maternal-Fetal and Neonatal Medicine
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Female en_US
dc.subject Humans en_US
dc.subject Peru en_US
dc.subject risk assessment en_US
dc.subject priority journal en_US
dc.subject disease association en_US
dc.subject Altitude en_US
dc.subject Hemoglobins en_US
dc.subject Infant, Newborn en_US
dc.subject small for date infant en_US
dc.subject Anemia en_US
dc.subject pregnant woman en_US
dc.subject probability en_US
dc.subject hemoglobin blood level en_US
dc.subject Pregnancy en_US
dc.subject adverse outcome en_US
dc.subject perinatal period en_US
dc.subject Pregnancy Outcome en_US
dc.subject Premature Birth en_US
dc.subject premature labor en_US
dc.subject Stillbirth en_US
dc.subject Infant, Small for Gestational Age en_US
dc.subject Small for gestational age en_US
dc.subject medical record review en_US
dc.subject secondary analysis en_US
dc.subject first trimester pregnancy en_US
dc.subject third trimester pregnancy en_US
dc.subject Adverse perinatal outcomes en_US
dc.subject hemoglobin analysis en_US
dc.subject High maternal hemoglobin en_US
dc.subject Maternal anemia en_US
dc.subject medical information system en_US
dc.subject Moderate altitude en_US
dc.subject Pregnancy Complications, Hematologic en_US
dc.subject Preterm births en_US
dc.subject second trimester pregnancy en_US
dc.subject Stillbirths en_US
dc.title Maternal hemoglobin concentration and adverse pregnancy outcomes at low and moderate altitudes in Peru en_US
dc.type info:eu-repo/semantics/review
dc.identifier.doi https://doi.org/10.3109/14767058.2011.623200
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.02.02
dc.relation.issn 1476-4954


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