Influence of Ear Protectors on the Sleep of Preterm Newborns: A Randomized Controlled Clinical Study

Abstract

The purpose of this study was to compare the effect of ear protectors on the sleep of preterm newborns during the “quiet” times in intermediate care nursery. This was a clinical, randomized, controlled crossover study conducted in two neonatal units in São Paulo, Brazil. The sample consisted of preterm infants who met the inclusion and exclusion criteria for the study. Polysomnography and unstructured observation were used for data collection. Twenty-four preterm infants with a mean gestational age of 33.2 weeks and current weight of 1.747 g were analyzed. There was no significant difference in the total sleep time of preterm infants with and without the use of ear protectors. Newborns with lower gestational age showed a significant reduction in total sleep time with the use of ear protectors (p <.05). The use of ear protection did not increase the total sleep time for preterm infants.