The research on milk volume and its influencing factors in mothers with preterm infants hospitalized in NICU during periods of mother-infant separation / 中华护理杂志

ABSTRACT

Objective To explore the milk production and its regularity in mothers with preterm infants hospitalized in NICU during periods of mother-infant separation,and to analyze the associating factors.Methods Totally 122 mothers with preterm infants hospitalized in NICU were recruited from February to December,2017.Continuous measurements of daily breast milk production were performed.The maternal lactation related comprehensive questionnaire and Edinburgh Postnatal Depression Scale (EPDS) were used.The Pearson correlation analysis and multiple linear regression analysis were conducted using the Statistical Analysis Systems (version 9.2).Results The milk volumes for the first 14 days postpartum showed a trend of rising among mothers.The mean milk volume on day 14 postpartum was (535.43±256.97) ml.The mean initiation time of lactogenesis stage Ⅱ was (68.23±26.42) h.The correlation coefficient of lactation between day 4 and day 14 was 0.707 0(P＜0.01).The multiple linear regression analysis revealed that the pregnancy induced hypertension syndrome,initiation time of lactogenesis stage Ⅱ,EPDS score,gestational age,maternal age were the influencing factors of milk volume for mothers during periods of mother-infant separation.Conclusion The milk volume of mothers with preterm infants was relatively lower compared with mothers with full-term infants during the early stage postpartum,and the onset of lactogenesis stage Ⅱ was later.In clinical nursing work,healthcare providers should pay special attention to mothers with older maternal age,smaller gestational age,pregnancy induced hypertension syndrome,higher EPDS score,and later initiation time of lactogenesis stage Ⅱ.