科研之友
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摘要
Background: Infant sucking problems are frequently implicated in early weaning during breastfeeding, yet our understanding of early sucking dynamics is limited. %26lt;br%26gt;Objective: This study aimed to describe infant sucking patterns during breastfeeding at secretory activation and determine whether they changed by the time of established lactation. %26lt;br%26gt;Methods: Sucking patterns and milk intake of 15 breastfeeding infants were assessed on day 3.2 +/- 0.8 and later at follow-up, 16.0 (11.3-22.8) days postpartum. Nipple diameters, tongue movement, nipple position, and suck rate during nutritive sucking (NS) and non-nutritive sucking (NNS) were measured from ultrasound scans of the intra-oral cavity during breastfeeding. Milk intake and LATCH scores were also recorded. %26lt;br%26gt;Results: As the tongue lowered during a suck cycle, the nipple increased in size (P %26lt; .001), milk flowed into the intra-oral space and the nipple moved closer to the hard-soft palate junction (P %26lt; .001). During NS, nipple diameters and the mid-tongue movement were greater than during NNS (P %26lt; .001). As the infant aged, the mid-tongue lowered further (P = .002), suck rates became faster (P %26lt; .001) and milk intake increased (P = .004), however, no differences were seen for LATCH scores (P = .34). %26lt;br%26gt;Conclusion: Differences in tongue movement between NS and NNS suggest that there is an altered sucking action when milk flow is absent. Similar sucking patterns at day 3 and during established lactation imply that infants have a mature sucking pattern in the early postpartum period.
- 出版日期2013-5
