Shenai J P
J Pediatr. 1977 May;90(5):811-2. doi: 10.1016/s0022-3476(77)81259-6.
Sound levels were measured in a neonatal intensive care nursery as well as during transport in ambulance, rotary wing, and fixed wing aircrafts. In the nursery, under usual conditions, the sound levels were between 58 and 70 dB; while in transit, they were invariably higher, particularly in rotary wing aircarft ( greater than 90 dB). The observations suggest that neonates in transit are exposed to potentially hazardous sound levels. Provision of means to attenuate the sound is desirable as a part of stabilization of infant during transport.
在新生儿重症监护病房以及救护车、旋翼飞机和固定翼飞机转运期间测量了声级。在病房中，在通常情况下，声级在58至70分贝之间；而在转运过程中，声级总是更高，尤其是在旋翼飞机上（超过90分贝）。这些观察结果表明，转运中的新生儿暴露于潜在有害的声级环境中。作为转运期间婴儿稳定措施的一部分，提供衰减声音的手段是可取的。
