The Critical Window of Opportunity: Lactation Initiation Following Cesarean Birth.

Abstract

Introduction: Cesarean birth is reported to be risk factor for the delayed onset of maternal lactation. The purpose of this study was to describe the timing of lactation initiation, subsequent feeding/milk expression patterns, and daily milk volumes among women who had a cesarean birth of an infant with a known congenital anomaly during the 3-day postpartum hospital stay. Materials and Methods: Retrospective descriptive cohort study. The electronic medical records of dyads, between 2014 and 2017 at the study setting, were abstracted for demographic and clinical data. Milk expression and milk volume data were abstracted from maternal lactation logs. Data were analyzed using descriptive statistics. Results: Among the cohort (n = 468 dyads), the mean time from infant delivery by cesarean to lactation initiation was 257.5 minutes. The cohort was divided into three groups by the timing of lactation initiation: EARLY (≤60 minutes; n = 112), MID (>60 minutes to ≤360 minutes; n = 309), and LATE (>360 minutes; n = 47). Statistically significant differences are seen between groups for the daily means: number of feeds/pumps and maternal milk volumes (irrespective of the presence of lactation risk factors). Discussion: This is the first study to explore the relationship of lactation initiation among women postcesarean birth whose infants have a known congenital anomaly. The time between the infant's birth and the first feed/milk expression, and the patterns of feeding/milk expression during the postpartum hospital stay, are key drivers for maternal milk supply.