title: Effects of pumping style on milk production in mothers of non-nursing preterm infants.
abstract: Milk production was examined in 39 lactating mothers of non-nursing preterm infants from 2 tertiary care centers. The purposes of this study were (1) to compare milk production of those using sequential single (SEQ) or simultaneous double (SIM) breast-pumping regimen, and (2) to examine the relationship of selected variables to inadequate (< 3500 g/week) and adequate (> or = 3500 g/week) milk production. In multivariate analysis, mothers using SIM produced a similar amount of milk by weight during weeks 2 to 5 postpartum compared to those using SEQ. A logistic regression model including frequency of kangaroo care, frequency of pumping, high versus low income, and previous breastfeeding experience was predictive of mothers producing adequate versus inadequate milk volume 79% of the time. All of the mothers producing > 3500 g at week 2 produced adequate amounts of milk at weeks 4 and 5. None of the mothers producing < 1700 g at week 2 reached adequate production by weeks 4 and 5. Of the remaining mothers who produced 1700 g to 3500 g at week 2, 54% achieved adequate production during weeks 4 and 5 postpartum.
authors.affiliation: College of Nursing, University of Illinois, Chicago Quad Cities Program 61265, USA.
authors.forename: P D
authors.initials: PD
authors.lastname: Hill
authors.forename: J C
authors.initials: JC
authors.lastname: Aldag
authors.forename: R T
authors.initials: RT
authors.lastname: Chatterton
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007182:Income; D007224:Infant Care / Q000379:methods; D007231:Infant, Newborn; D007234:Infant, Premature; D007774:Lactation / Q000502:physiology*; D016015:Logistic Models; D008137:Longitudinal Studies; D015999:Multivariate Analysis; D013396:Suction / Q000379:methods*; D013997:Time Factors; D014110:Touch