Berens R J, Weigle C G
Children's Hospital of Wisconsin, Wauwatosa, USA.
J Perinatol. 1996 May-Jun;16(3 Pt 1):199-201.
Our purpose was to evaluate the cost and benefit of noise reduction after replacement of acoustic ceiling tile in an open ward neonatal intensive care unit (NICU).
An observational, prospective study evaluated noise in an open ward NICU before and after suspended ceiling tiles were replaced. Noise was rated by a 10-point visual analog scale and measured with a decibel meter.
The mean decibel level was 55 before and 53 after renovation (p < 0.05). The median visual analog score was 5 before and 4 after renovation (p = 0.09). The cost of ceiling tile replacement was $2400.
The renovation resulted in a small decrease in the decibel level in the NICU, although this measured decrease was not perceived by observers. With a formal prerenovation noise evaluation, a more efficient ceiling tile might have been selected or the project may have been aborted or modified because of the low levels of noise already present.
我们的目的是评估在开放式病房新生儿重症监护病房（NICU）更换吸音天花板瓷砖后降噪的成本和效益。
一项观察性前瞻性研究评估了在悬挂式天花板瓷砖更换前后开放式病房NICU中的噪音情况。噪音通过10分视觉模拟量表进行评分，并用分贝仪进行测量。
翻新前平均分贝水平为55，翻新后为53（p < 0.05）。视觉模拟评分中位数翻新前为5，翻新后为4（p = 0.09）。天花板瓷砖更换成本为2400美元。
翻新导致NICU中的分贝水平略有下降，尽管这种测量到的下降未被观察者察觉。通过正式的翻新前噪音评估，可能会选择更高效的天花板瓷砖，或者由于已经存在的低噪音水平，该项目可能会被中止或修改。
