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염미경 ( Yeum Mi-Kyung ) - 인하대학교병원 신생아집중치료실
안영미 ( Ahn Young-Mee ) - 인하대학교 간호학과
서화숙 ( Seo Wha-Sook ) - 인하대학교 간호학과
전용훈 ( Jun Yong-Hoon ) - 인하대학교 의과대학 소아과학교실
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Abstract
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Purpose: The study was done to measure the effects of maternal heart sound on body weight, physiologic reactions (heart rate [HR] and cortisol) and behavioral states of preterm infants.
Methods: Thirty-five preterm infants were recruited from a neonatal intensive care unit at a university hospital. Institutional Review Board approval and informed consent were obtained. The infants were assigned to an experimental group (n=18) with an auditory stimulation for 7 days of life, a continuous delivery of maternal heart sound using MP3 attached inside the incubator, or to a control (n=17) without any auditory stimulation. The outcome variables, daily variations in weight, HR and behavioral states, and differences in cortisol were analyzed.
Results: There were differences in variations of daily weights (F=3.431, p=.011) and in cortisol (t=3.184, p=.006) between groups, but no difference in variations of daily HR (F=0.331, p=.933) and behavioral states (F=1.842, p=.323).
Conclusion: The findings support the safety of continuous maternal heart sound as no changes in HR and behavioral states occurred, and the efficacy as weight increased and cortisol decreased. This auditory simulation may lead to more efficient utilization of energy in preterm infants by consistently providing familiar sounds from intrauterine life and blocking noxious sounds from NICU environments.
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KeyWords
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미숙아, 청각자극, 심장소리, 심박동수, 체중
Premature infants, Acoustic stimulation, Heart sounds, Heart rate, Weight
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원문 및 링크아웃 정보
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등재저널 정보
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