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Effect of noise on sleep of preterm infants hospitalized during NAP time

Grant number: 15/25737-1
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2016
Effective date (End): September 30, 2016
Field of knowledge:Health Sciences - Nursing - Pediatric Nursing
Principal Investigator:Eliana Moreira Pinheiro
Grantee:Raiani Roberta Pugliesi
Home Institution: Escola Paulista de Enfermagem (EPE). Universidade Federal de São Paulo (UNIFESP). Campus São Paulo. São Paulo , SP, Brazil


Objective: To compare and evaluate total sleep time and wakefulness of preterm infants with sound pressure levels inside incubators before, during and after nap time periods. Method: longitudinal study, conducted in a neonatal intermediate care unit of an university hospital of São Paulo. The sample consisted of 12 preterm infants who met the criteria for inclusion and exclusion set for the study. Data collection began only after obtaining the signature of the responsible for the child, and were collected from June to April 2014. The project is part of a larger project that was authorized by the Ethics Committee of the institution (CEP nº19387 / CAEEE No 01498912.6.0000.5505). Data collection Instruments: the polysomnography model Alice 5 Respironics® (Philips, The Netherlands) was used to obtain the sleep records. To obtain the sound pressure levels inside the incubator was used a dosimeter model Noise Pro DLX-1 brand Quest 3M® (United States). Data collection strategy: The polysomnography was installed in preterm infants by a technician of Incentive Research Fund Association, at night and removed after 24 hours. After this procedure the researcher make cuts in polysomnography software and dosimeter records from 60 minutes before the start, during and 60 minutes after the end of nap times in four different periods of the day. Data analysis: Data collected will be compiled in a spreadsheet and analyzed using SPSS Statistics 17.0. Descriptive statistics will be used. The correlation of total sleep time and wakefulness with the sound pressure levels will be assessed by Tests of Pearson or Spearman correlation. Comparing total sleep time between different periods will be made by t test for dependent samples (if the normality assumption is met) or nonparametric Wilcoxon. If there are more than two times of comparison, the Friedman test will be used, due to the dependence of the measurements. (AU)