Quantifying Neonatal Sucking Performance: Promise of New Methods.
Gilson J Capilouto, Tommy J Cunningham, David R Mullineaux and 3 others
PMID 28324904WHAT IT FOUND
Higher-risk preterm newborns showed changing suck movement patterns over time, while lower-risk preterm newborns looked similar to full-term newborns.
The method separated groups, but no later developmental outcomes were reported.
Key findings
01Only smoothness variability differed between lower-risk preterm and full-term newborns when oral feeding began.
02At discharge, lower-risk preterm newborns had less variability in suck duration than high-risk preterm newborns.
03In high-risk preterm newborns, variability in suck amplitude, duration and frequency decreased over time, while smoothness variability increased.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The analysis included 14 full-term, 28 high-risk preterm and 12 low-risk preterm newborns, so the findings are preliminary. Only five newborns had reached the age for the 1-year developmental outcome measure, and those outcome data were not reported, so later neurodevelopmental risk cannot be inferred. Full-term newborns were not followed after discharge, so normal changes in suck movement with maturation are unknown. The high-risk and low-risk groups were assigned by clinic follow-up criteria, including gestational age and birth weight, not by the sucking measures themselves. The study measured nipple movement only and did not analyse other feeding or physiologic factors such as intraoral pressure, oxygen saturation or respiration rate. The study was done in one NICU, so it may not generalise to all preterm infants. It did not test whether monitoring or acting on these measures improves feeding or development.
Declared interests
The supplied metadata lists NIH extramural and non-U.S. government research support. The article text does not provide an author conflict-of-interest statement. It reports use of a commercial nfant system.
The easy way to misread this
Do not conclude that abnormal suck variability identifies a baby who will have poor neurodevelopment or that clinicians should change treatment based on this method. The paper did not report later developmental outcome scores and did not test an intervention.