[Sound pressure levels in the neonatal intensive care unit].

Rev Esc Enferm USP

Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, SP, Brasil.

Published: December 2011

AI Article Synopsis

  • The study aimed to evaluate sound pressure levels (SPL) and identify noise sources in two rooms of a Neonatal Intensive Care Unit (NICU) in São Paulo, Brazil.
  • A quantitative analysis was conducted using dosimeters over 261 hours, revealing high SPLs; room A averaged 71.0 dBA and room B averaged 68.0 dBA.
  • The main sources of noise were identified as hallway traffic, conversations among staff, and other unit activities, exceeding recommended levels, prompting the creation of guidelines and an educational program to mitigate noise.

Article Abstract

The objectives of the study were to assess sound pressure level (SPL) in two rooms of a Neonatal Intensive Care Unit (NICU) and to identify their sources. This quantitative-descriptive study was conducted in two rooms of a NICU of a University Hospital in São Paulo, Brazil. Three dosimeters were used to register SPL (total of 261 hours). A 48-hour register of noise sources was obtained. The results showed high SPL in both rooms. The greatest mean Leq were 71.0 dBA (room A) and 68.0 dBA (room B). Main noise sources in both units were: NICU hallway noise, traffic and conversation among professionals. The results indicate that SPLs in NICU rooms are higher than the levels recommended by regulatory agencies. A guideline was developed and an educational program was implemented as a means to reduce sound pressure levels.

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Source
http://dx.doi.org/10.1590/s0080-62342011000600005DOI Listing

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