Wubben Stephanie M, Brueggeman Paul M, Stevens Dennis C, Helseth Carol C, Blaschke Kristen
Department of Communication Disorders, Center for Disabilities of the Sanford School of Medicine, University of South Dakota, South Dakota, USA.
Noise Health. 2011 Jan-Feb;13(50):37-44. doi: 10.4103/1463-1741.73999.
The neonatal intensive care unit (NICU) is an environment that provides premature and fragile infants with health provisions needed to make a complete recovery. Premature infants are often born before their auditory systems have had an opportunity to fully mature. Research has shown that the ambient acoustic environment in the NICU exceeds the maximum noise level recommended by the American Academy of Pediatrics, even after measures have been taken to decrease noise levels. The purpose of this study is to evaluate noise levels inside an Ohmeda Medical Giraffe™ OmniBed™, the natural attenuation of the incubator, and the effects of modifications on attenuation and reverberation within the Giraffe TM OmniBed™. The normal operation of the Giraffe™ OmniBed™ is 41.7 dBA which indicates a lower noise of operation than previous studies. The Giraffe™ OmniBed™ naturally attenuates 12 dBA. Leaving an access latch or portal door open causes a statistically significant (P=.001) increase in sound within the bassinet. All modifications in the no-noise and the noise conditions showed a statistically significant (P=.001) drop in L(eq) when compared to baseline.
新生儿重症监护病房（NICU）是一个为早产和脆弱婴儿提供完全康复所需健康护理的环境。早产儿通常在其听觉系统有机会完全成熟之前就出生了。研究表明，即使采取了降低噪音水平的措施，NICU中的环境声学环境仍超过了美国儿科学会推荐的最大噪音水平。本研究的目的是评估Ohmeda Medical Giraffe™ OmniBed™内部的噪音水平、保温箱的自然衰减以及对Giraffe TM OmniBed™内衰减和混响的修改效果。Giraffe™ OmniBed™的正常运行噪音为41.7 dBA，这表明其运行噪音比之前的研究更低。Giraffe™ OmniBed™自然衰减12 dBA。打开进入锁扣或舱门会导致摇篮内的声音在统计学上显著增加（P = 0.001）。与基线相比，在无噪音和有噪音条件下的所有修改都显示L(eq)在统计学上显著下降（P = 0.001）。
