Poore Meredith, Barlow Steven M, Wang Jingyan, Estep Meredith, Lee Jaehoon
Department of Speech-Language-Hearing: Sciences and Disorders, University of Kansas, USA.
J Neonatal Nurs. 2008 Dec;14(6):185-192. doi: 10.1016/j.jnn.2008.07.006.
Sensory deprivation and motor restriction associated with extensive oxygen therapy may lead to poor oromotor control in preterm infants. Non-nutritive suck is one of the first complex oromotor behaviors infants perform. This study determined the spatiotemporal variability of non-nutritive suck (NNS) pressure trajectories in three preterm groups with differing oxygen histories-one control group with minimal or no O(2) therapy, and two Respiratory Distress Syndrome (RDS) groups with either a mild/moderate (RDS1) or moderate/severe (RDS2) O(2) history. The Non-nutritive Suck Spatiotemporal Index (NNS STI) quantifies spatial and temporal variability across kinematic trajectories, and was calculated from digital representations of infants' suck pressure signals. An ANCOVA revealed a significant effect for group (p < .001) on the NNS STI measure, with RDS2 infants showing highly variable NNS patterning, and thus relatively underdeveloped suck. Extensive oxygen therapy, which alters the oral sensory environment and reduces motor experiences, disrupts the development of coordinated NNS in preterm infants.
与广泛的氧疗相关的感觉剥夺和运动限制可能导致早产儿口腔运动控制不良。非营养性吸吮是婴儿最早执行的复杂口腔运动行为之一。本研究确定了三组不同氧疗史的早产儿非营养性吸吮（NNS）压力轨迹的时空变异性——一个对照组接受极少或未接受氧气治疗，以及两个呼吸窘迫综合征（RDS）组，分别有轻度/中度（RDS1）或中度/重度（RDS2）的氧疗史。非营养性吸吮时空指数（NNS STI）量化了运动轨迹的空间和时间变异性，并根据婴儿吸吮压力信号的数字表示进行计算。协方差分析显示，组间（p <.001）对NNS STI测量有显著影响，RDS2组婴儿的NNS模式高度可变，因此吸吮相对发育不全。广泛的氧疗会改变口腔感觉环境并减少运动体验，从而干扰早产儿协调的非营养性吸吮的发育。
