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1.  Infant and Maternal Factors Influencing Breastmilk Sodium Among Primiparous Mothers 
Breastfeeding Medicine  2012;7(4):290-294.
Abstract
Objective
This study identified birth events and infant/maternal factors related to breastmilk sodium (Na+) among primiparous mothers.
Subjects and Methods
Data were collected in a larger study on perceived insufficient milk among 252 breastfeeding mothers at a Canadian, French-speaking university maternal care center. Birth events and infant and maternal factors were collected at 48 hours, 2 weeks, and 6 weeks after birth and were analyzed with bivariate and regression analysis.
Results
Presence of gestational diabetes increases the risk of an elevated breastmilk Na+ level at 48 hours, and increased number of breastfeeds (mean=8.91, SD=3.77) lowers it, indicating lactogenesis II was initiated.
Conclusions
Breastfeeding frequency impacts initiation of lactogenesis II, which in turn influences duration of breastfeeding exclusivity. Therefore feedings should be promoted as soon as possible after birth and as frequently as eight to 12 times a day.
doi:10.1089/bfm.2011.0022
PMCID: PMC3411346  PMID: 22612625

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