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  • Title: Predictors of low milk volume among mothers who delivered preterm.
    Author: Murase M, Nommsen-Rivers L, Morrow AL, Hatsuno M, Mizuno K, Taki M, Miyazawa T, Nakano Y, Aizawa M, Itabashi K.
    Journal: J Hum Lact; 2014 Nov; 30(4):425-35. PubMed ID: 25063573.
    Abstract:
    BACKGROUND: Factors associated with successful provision of mother's own milk (MOM) for premature infants in a Japanese neonatal intensive care unit (NICU) context are not well known. OBJECTIVE: We determined the independent risk factors for low milk volume at day 4 postpartum and formula feeding at the time of NICU discharge. METHODS: We reviewed the medical records of mothers who delivered at < 32 weeks' gestation. We determined maternal, premature infant, and milk expression variables predictive of (1) day 4 postpartum milk volume being less than the cohort median and (2) formula feeding at the time of NICU discharge, reported as adjusted odds ratios (95% confidence interval). RESULTS: Among 85 dyads, median (quartile range) milk volume on day 4 postpartum was 153 (34-255) mL. The rate of formula feeding at discharge was 42%. Mothers delivering by cesarean (vs vaginal) delivery had 4.3-fold (1.5-12.4) greater odds of day 4 milk volume < median (P < .01). Pregnancy-induced hypertension, delayed milk expression initiation, and low pumping frequency were strongly associated with cesarean delivery. Subsequently, mothers with day 4 milk volume < median (vs ≥ median) had 7.1-fold (2.6-19.5) greater odds of formula feeding at discharge (P < .01). CONCLUSION: Cesarean delivery is associated with lower milk volume on day 4 but may represent a composite of underlying risk factors for low milk volume in the early postpartum period. Further, low milk volume on day 4 is a strong correlate of lack of exclusive breast milk feeding at NICU discharge.
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