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    Efeito do uso de protetores auriculares no sono de recém-nascidos prematuros na unidade neonatal: estudo clínico, randômico, controlado e cruzado
    (Universidade Federal de São Paulo (UNIFESP), 2015-11-26) Sato, Monica Hiromi [UNIFESP]; Pinheiro, Eliana Moreira Pinheiro [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective: To compare the effect of using earmuffs on the sleep of preterm newborns during ?quiet time? in two neonatal intermediate care units. Method: This is a randomized controlled crossover clinical study conducted at two neonatal intermediate care units from different hospitals in São Paulo - SP. Sample comprised 24 clinically stable preterm newborns, whose weight ranged from 1,200 g to 2,000g, who were in an incubator and met the inclusion and exclusion criteria established for the study. We used a Polysomnography Alice 5 (Respironics®) and unstructured observation for data collection. The intervention consisted in the use of earmuffs during Quiet time, with a total of 96 periods analyzed: 48 in the experimental group, and the remainder 48 in the control group. Results: Of the total sample, half were male. The average gestational, corrected and chronological ages were 33.2 weeks, 34.9 weeks and 11 days, respectively. Current average weight of preterm newborns was 1,747g. There was no significant difference in total sleep time between the experimental and control groups, and their averages were 83.7 minutes and 87.1 minutes, respectively (p = 0.540). Comparisons of quiet and indeterminate sleep time showed a marginally significant difference between the two groups (p = 0.071). Younger preterm newborns and with lower weights had significantly reduced total sleep time and quiet sleep with the use of earmuffs (p <0.05). The increase of one week in gestational age resulted in a 3% increase in preterm newborn's total sleep time when variables such as ambient light, handling the newborn and current weight were controlled. Quiet sleep was the predominant sleep stage in most analyses. Ambient light and handling the preterm newborn did not influence total sleep time in both groups. Conclusion: We concluded that there was no significant difference in total sleep time of preterm newborns between the experimental and control groups during naptime in the units studied. Significant reductions in total sleep time of smaller preterm newborns in relation to the average gestational and corrected ages and current weight may be related to a possible discomfort they experience due to the use of earmuffs.
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    Emissões otoacústicas por produto de distorção e audiometria tonal liminar: estudo da mudança temporária do limiar
    (ABORL-CCF Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, 2002-05-13) Frota, Silvana [UNIFESP]; Iorio, Maria Cecilia Martinelli [UNIFESP]; UFRJ; Universidade Federal de São Paulo (UNIFESP)
    Introduction: Noise-induced hearing loss is one of the most common causes for sensorineural hearing impairment. Objective: The purpose of this study was to evaluate pure tone and distortion product otoacoustic emissions (DPOAE) pre and post white noise exposition at high levels (100 dB SPL for 10 minutes), considering gender and ear variables, aiming at investigating pure tone audiometry and DPOAE efficiency in detecting subtle temporary threshold shifts (TTS). Study design: prospectivo clinical randomized. Material and method: Forty subjects, 20 male and 20 female ranging from 18 to 36 years old with no otological complaints were evaluated. Pure tone audiometry and DPOAE were carried out pre and post white noise exposure. Results: Pure tone audiometry was sensitive in detecting temporary threshold shifts after white noise exposition in 2, 3 and 4 kHz, with no significant differences concerning gender and ear, whereas DPOAE revealed temporary shifts in audibility evidenced by amplitude reduction, in 2588 and 3614 in female subjects and in 932, 1304, 2588 and 5128 Hz in male subjects. Conclusion: We could conclude that either pure tone audiometry or DPOAE were sensitive in determining significant temporary shifts in hearing thresholds and amplitude, respectively, after white noise exposition, according to the involved frequency range