Campbell A N, Lightstone A D, Smith J M, Kirpalani H, Perlman M
Am J Dis Child. 1984 Oct;138(10):967-70. doi: 10.1001/archpedi.1984.02140480069021.
Exposure of neonates to sound and to mechanical vibration was measured while transferring the neonates to a regional referral unit by ambulance and by rotary wing and fixed wing aircraft. Recordings were made during different phases of each type of transportation and were analyzed later. In the nursery, sound levels ranged from 72 to 74 dBA (A-weighted decibel level) (77 to 81 dB), while in transit, levels were higher at 78 to 99 dBA (90 to 110 dB), depending on the means of transport. Vibration was measured in the horizontal and vertical axes relative to the neonate in different frequency ranges. The vibration acceleration magnitude ranged from 0.4 m/sq s to 5.6 m/sq s, depending on the axis and type of transport; the maximum obtained was in rotary wing transport. When compared with adult tolerance levels, both sound and vibration exposure of the neonate are high and potentially hazardous. Further evaluation of vibration stress and means of attenuating sound and vibration in transport infant incubators is desirable to enhance the safety of transported infants.
在通过救护车、旋翼飞机和固定翼飞机将新生儿转运至地区转诊单位的过程中，对新生儿所接触的声音和机械振动进行了测量。在每种运输方式的不同阶段进行记录，随后进行分析。在育婴室，声级范围为72至74 dBA（A加权分贝水平）（77至81 dB），而在运输过程中，根据运输方式的不同，声级更高，为78至99 dBA（90至110 dB）。在相对于新生儿的水平和垂直轴上，于不同频率范围内测量振动。振动加速度大小范围为0.4米每二次方秒至5.6米每二次方秒，具体取决于轴和运输类型；所测得的最大值出现在旋翼飞机运输中。与成人耐受水平相比，新生儿所接触的声音和振动都很高，且具有潜在危险性。为提高转运婴儿的安全性，需要对振动应力以及运输婴儿保育箱中的声音和振动衰减方式进行进一步评估。
