J Korean Acad Nurs.  2019 Apr;49(2):126-136. 10.4040/jkan.2019.49.2.126.

The Effects of Breast Milk Olfactory Stimulation on Physiological Responses, Oral Feeding Progression and Body Weight in Preterm Infants

Affiliations
  • 1Department of Nursing, Wonkwang University, Iksan, Korea. ejlee06@wku.ac.kr

Abstract

PURPOSE
This study was conducted to evaluate the effect of breast milk olfactory stimulation on physiological responses, oral feeding progression, and body weight in preterm infants.
METHODS
A repeated measures design with nonequivalent control group was used. The participants were healthy, preterm infants born at a gestational age of 28~32 weeks; 12 in the experimental group and 16 in the control group. Data were collected prospectively in the experimental group, and retrospectively in the control group, by the same methods. Breast milk olfactory stimulation was provided 12 times over 15 days. The data were analyzed using the chi-square test, Mann-Whitney U test, Wilcoxon signed rank test and linear mixed models using SPSS 19.
RESULTS
The gastric residual volume (GRV) of the experimental group was significantly less than that of the control group. The heart rate, oxygen saturation, respiration rate, transition time to oral feeding, and body weight were not significantly different between the two groups.
CONCLUSION
These findings indicate that breast milk olfactory stimulation reduces GRV and improves digestive function in preterm infants without inducing distress.

Keyword

Smell; Milk, Human; Infant, Premature; Gastric Emptying; Vital Signs

MeSH Terms

Body Weight*
Breast*
Gastric Emptying
Gestational Age
Heart Rate
Humans
Infant, Newborn
Infant, Premature*
Milk, Human*
Oxygen
Prospective Studies
Residual Volume
Respiratory Rate
Retrospective Studies
Smell
Vital Signs
Oxygen
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