Department of Gynecology & Obstetrics, Binzhou Medical University Hospital, Binzhou, Shandong, PR China.
Department of Women and Child Health Care, Binzhou Maternal and Child Health Care Center, Binzhou, Shandong, PR China.
Asian Nurs Res (Korean Soc Nurs Sci). 2019 May;13(2):93-98. doi: 10.1016/j.anr.2019.02.001. Epub 2019 Feb 16.
This study aimed to evaluate the effect of delayed lactogenesis Ⅱ on early milk volume in mothers expressing milk for their preterm infants.
142 mothers with preterm infants participated in a longitudinal cohort study, the milk volumes over 14 days postpartum between mothers with delayed lactogenesis Ⅱ (≥ 72 hours) and mothers with non-delayed lactogenesis Ⅱ(< 72 hours) were compared using Wilcoxon's rank sum tests.
The prevalence of delayed lactogenesisⅡ among mothers of preterm infants was 36.0% (36/100). There existed negative correlations between the onset of lactogenesis Ⅱ and the daily milk volumes( r = -0.525∼-0.354, p = .002 ∼ p < .001). The milk volumes in every 24-hour of the 14 days postpartum in delayed group were significantly less than that in non-delayed group (p = .002 ∼ p < .001). After controlling for the covariates, pregnancy-induced hypertension syndrome, delayed expression initiation, shorter daily sleeping time were found to be the risk factors for delayed lactogenesis Ⅱ.
Delayed lactogenesis Ⅱ was associated with lower milk volume in early postpartum period. Women who were at risk for delayed lactogenesis Ⅱ need targeted interventions and additional support during pregnancy and postpartum.
本研究旨在评估Ⅱ期泌乳延迟对早产儿母亲泌乳量的早期影响。
142 名早产儿母亲参与了一项纵向队列研究，通过 Wilcoxon 秩和检验比较了Ⅱ期泌乳延迟（≥72 小时）和非延迟（<72 小时）母亲在产后 14 天内的乳汁量。
早产儿母亲Ⅱ期泌乳延迟的患病率为 36.0%（36/100）。Ⅱ期泌乳开始时间与每日乳汁量呈负相关（r=-0.525∼-0.354，p=.002∼p<.001）。延迟组产后 14 天内每 24 小时的乳汁量明显少于非延迟组（p=.002∼p<.001）。在控制了协变量后，妊娠高血压综合征、延迟开始泌乳和每日睡眠时间较短被发现是Ⅱ期泌乳延迟的危险因素。
Ⅱ期泌乳延迟与产后早期乳汁量减少有关。有Ⅱ期泌乳延迟风险的女性在妊娠和产后需要接受有针对性的干预和额外的支持。
