- 期刊
Noise Distribution in Closed and Open Spaces in the Neonatal Intensive Care Unit
新生兒加護病房內密閉及開放空間的噪音分布
並列摘要
Introduction: Premature babies with immature organ systems are very fragile. Noise in a neonatal intensive care unit (NICU) has been known to cause many adverse effects such as hearing impairment, sleep disturbance, somatic effects and hindrance of emotional development. The aim of this study was to survey noise levels and time distribution of noise in two different spaces in our NICU Materials and Methods: We performed a noise distribution survey in our NICU at the Veterans General Hospital Taichung using two electronic sound-level meters (RION NL 21, Japan) with a central site measurement. There were two rectangular adjacent spaces (6×5 meters each) with six beds in each space. One space (room A) was a closed space with a controllable door and the other space (room B) was next to an open area without a wall between it and the nurse station. All measurements were made using the A filter and slow response time (1-second averaging) and expressed in decibels (dBA). The sound levels were presented as hourly L(subscript eq), L(subscript max) and L10. Data were analyzed using SPSS 10.0 software for Windows. Results: The hourly L(subscript eq( was 54.59 dBA in room A and 52.29 dBA in room B. The difference in the hourly L(subscript eq) was 2.3 dBA (p＜0.05). The hourly L(subscript max) was 73.54 dBA in room A and 71.56 dBA in room B. The difference in the hourly L(subscript max was 1.98 dBA (p＜0.05). The hourly L10 was 56.67 dBA in room A and 54.81 dBA in room B. The difference in the hourly L10 was 1.86 dBA (p＜0.05). In our study, hourly L(subscript eq), L(subscript max) and L10 all exceeded the recommended levels. Conclusion: The closed space (room A) had higher noise levels than the open space (room B). The controllable doors cement walls, glass windows and incubators inside a closed space might contribute to this higher noise level. Continuous sound level monitoring of the intensive care unit is important to provide a safe environment for premature infants.
延伸閱讀
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