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Excessive noise levels in the neonatal ICU: potential effects on auditory system development
William D T Kent1, Andre K W Tan, Maxine C Clarke
1Department of Otolaryngology, Faculty of Medicine, Queen's University, Kingston, Ontario.
The Journal of Otolaryngology
|February 21, 2003
Summary
Neonatal intensive care unit (NICU) noise levels are excessively high, with incubator noise significantly exceeding ambient levels. Staff activity further increases noise, impacting infant development.
Area of Science:
- Neonatal care
- Environmental health
- Acoustics
Background:
- Neonatal intensive care units (NICUs) are known for high noise levels.
- Previous studies indicate noise exposure is a concern for neonates.
Purpose of the Study:
- To conduct a detailed noise assessment in a Canadian NICU.
- To quantify noise levels inside incubators and compare them to ambient NICU noise.
Main Methods:
- Utilized a noise level meter for measurements.
- Assessed ambient noise in three NICU rooms.
- Compared noise levels inside and outside occupied incubators.
Main Results:
- Mean hourly noise inside incubators (61 dB) was higher than outside (55 dB).
- Higher ambient noise levels (59 dB) correlated with increased staff activity.
- Peak noise levels exceeded 120 dB.
Conclusions:
- NICU noise levels are excessive, consistent with prior research.
- Staff activity is a significant contributor to NICU noise.
- Discusses potential detriments to infant auditory and nervous system development and recommends interventions.