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Previous issue date: 2017-07-03 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Introduction: According to the literature, cesarean delivery represents an obstacle to breastfeeding in the first hours of life and is one of the factors for early weaning. One of the hypotheses to explain these findings is that the production of breast milk may be insufficient in the first hours after a cesarean section. However, the way by which delivery route affects the onset of breastfeeding is not clearly established.
Objective: To compare the volume of breast milk at 12 and at 36 hours in puerperal women after normal delivery and cesarean section.
Method: Cross-sectional study with quantitative analysis and non probabilistic convenience sampling. All the puerperae (and their newborns) with a singleton pregnancy of 38 to 42 weeks, whose delivery occurred from 8 pm to midnight between September 2016 and January 2017 were eligible for the study. They were divided into two groups, one of post normal delivery and the other of post cesarean section. Breast milk was collected at 12 and 36 hours postpartum with an electric breast pump, and its volume was based on the weight verified in a scale with 0.01 g precision. In addition to the way of delivery and the breast milk volume, variables included time of onset of breastfeeding and maternal as well as newborn characteristics.
Results: Seventy-four puerperae were included in the normal delivery group and 26 in the cesarean section group. Both groups were similar for maternal and newborn characteristics. The median volume of milk collected at 12 hours was 0.90 mL (interquartile range 0.28-1.73 mL) in the normal delivery group, and 1.36 mL (interquartile range 0.36-2.91 mL ) in the cesarean section group (p=0.127). The median volume of milk collected at 36 hours was higher in the cesarean section group (4.23 mL, interquartile range 3.05-5.00 mL) than in the normal delivery group (3.22 mL, interquartile range 2.60-4.11 mL) (p=0.025). Regarding the time elapsed between delivery and the first feeding, no differences in milk volume were observed at both 12 and 36 hours in either group. When only cesarean deliverers were evaluated, there was no difference in milk volume between those with labor and no labor at 12 hours (p=0,411) or at 36 hours (p=0681).
Conclusion: There was no difference in the volume of milk produced at 12 hours postpartum by puerperae with full term gestation, between the normal and cesarean delivery groups. At 36 hours postpartum, milk volume was higher in the cesarean section group, however the small difference was considered clinically irrelevant. / Introdu??o: Conforme a literatura, o parto ces?reo representa um empecilho para a amamenta??o nas primeiras horas de vida e ? um dos fatores do desmame precoce. Uma das hip?teses para explicar esses fatores ? que a produ??o de leite materno possa ser insuficiente nas primeiras horas ap?s uma cesariana. Entretanto, o modo pelo qual a via de parto afeta o in?cio da amamenta??o n?o est? claramente estabelecido.
Objetivo: Comparar o volume do leite produzido as 12 e ?s 36 horas p?s-parto, em pu?rperas de parto normal e parto ces?reo.
M?todo: Estudo transversal com an?lise quantitativa e amostragem n?o probabil?stica de conveni?ncia. Foram eleg?veis para o estudo todas as pu?rperas (e seus rec?m-nascidos) com gesta??o ?nica de 38 a 42 semanas, cujo parto ocorreu no hor?rio das 20h ?s 24h entre setembro de 2016 e janeiro de 2017. As pu?rperas foram divididas em dois grupos, um p?s-parto normal e o outro p?s-cesariana. O leite materno foi coletado com um aparelho de ordenha el?trico, as 12 e ?s 36 horas p?s-parto, e o seu volume foi baseado no peso verificado em uma balan?a com precis?o de 0,01 g. Al?m da via de parto e do volume de leite materno, as vari?veis inclu?ram momento de in?cio do aleitamento, caracter?sticas maternas e do neonato.
Resultados: Foram inclu?das 74 pu?rperas no grupo parto normal e 26 no grupo parto ces?reo. Ambos os grupos foram semelhantes quanto ?s caracter?sticas maternas e dos rec?m-nascidos. A mediana do volume de leite coletado ?s 12 horas foi de 0,90 mL (intervalo interquartil 0,28-1,73 mL) no grupo parto normal, e de 1,36 mL (intervalo interquartil 0,36-2,91 mL) no grupo cesariana (p=0,127). A mediana do volume de leite coletado ?s 36 horas foi maior no grupo cesariana (4,23 mL, intervalo interquartil 3,05-5,00 mL) do que no grupo parto normal (3,22 mL, intervalo interquartil 2,60-4,11 mL) (p=0,025). Em rela??o ao tempo transcorrido entre o parto e a primeira mamada, n?o foram observadas diferen?as no volume de leite, tanto ?s 12, como ?s 36 horas, em nenhum dos dois grupos. Quando avaliadas somente as pu?rperas de parto ces?reo, n?o houve diferen?a no volume de leite ?s 12 horas (p=0,411) nem ?s 36 horas (p=0,681) entre aquelas com trabalho de parto e sem trabalho de parto.
Conclus?o: N?o houve diferen?a no volume de leite produzido ?s 12 horas p?s-parto pelas pu?rperas com gesta??o a termo, entre os grupos parto normal e cesariana. Na coleta das 36 horas p?s-parto, o volume de leite foi maior no grupo cesariana, entretanto a pequena diferen?a foi considerada clinicamente irrelevante.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/7807 |
| Date | 03 July 2017 |
| Creators | Zimmer, Genoveva |
| Contributors | Fiori, Humberto Holmer |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Medicina/Pediatria e Sa?de da Crian?a, PUCRS, Brasil, Escola de Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 3098206005268432148, 500, 500, 500, 600, -224747486637135387, -969369452308786627, 2075167498588264571 |
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