Does wearing a surgical facemask or N95-respirator impair radio communication?
Does wearing a surgical facemask or N95-respirator impair radio communication?
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DOI：
10.1016/j.amj.2010.12.007
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发表时间：
2011-03-01
影响因子：
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通讯作者：
Handrahan, Diana L
中科院分区：
文献类型：
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作者：
Thomas, Frank;Allen, Craig;Handrahan, Diana L
目的：本研究评估了佩戴外科口罩或N95空气净化呼吸器(N95)对无线电接收的影响。方法：我们比较了坐在贝尔407机组人员机舱内的机组人员和坐在通信中心的调度员准确记录直升机紧急医疗服务(HEMS)飞行员通过无线电传输的20个随机航空术语的能力，以及6种不同的N95在飞机发动机工作和不工作的情况下。结果：在飞机发动机关闭的情况下，无论研究的外科口罩或N95是否存在，所有术语都被正确识别(100%准确率)。在飞机引擎开启的情况下，外科口罩(3M-1826)和两个N95呼吸器(3M-1860，Safe Life Corp-150)保持100%的准确性。其余的N95准确率如下：3M-8511和金佰利PFR95(98%)，Inoyel-3212(97%)，3M-1870(93%)。结论：总的来说，尽管戴着口罩，无线电接收准确率很高(>；90%)。然而，飞机发动机噪音和N95型似乎确实会对无线电接收的准确性产生不利影响。当在运输过程中使用N95呼吸器时，所有HEMS飞行员和机组人员都应该知道这些无线电接收结果。简要回顾了外科口罩和N95预防呼吸道病毒感染的有效性。
PURPOSE: This study evaluated the impact wearing a surgical facemask or N95 air purifying respirator (N95) has on radio reception.METHODS: We compared the ability of a flight crewmember and a layperson sitting in a Bell 407 crew compartment and a dispatcher sitting in a communication center to accurately record 20 randomized aviation terms transmitted over the radio by a helicopter emergency medical services (HEMS) pilot wearing a surgical facemask and six different N95s with and without the aircraft engine operating.RESULTS: With the aircraft engine off, all terms (100% accuracy) were correctly identified, regardless of the absence or presence of the surgical facemask or N95 studied. With the aircraft engine on, the surgical facemask (3M-1826) and two N95 respirators (3M-1860, Safe Life Corp-150) maintained 100% accuracy. Remaining N95 accuracy was as follows: 3M-8511 and Kimberly-Clark PFR95 (98%), Inoyel-3212 (97%), and 3M-1870 (93%).CONCLUSIONS: In general, despite wearing a facemask, radio reception accuracy is high (>90%). However, aircraft engine noise and N95 type do appear to adversely affect the accuracy of radio reception. All HEMS pilots and crewmembers should be aware of these radio reception findings when using an N95 respirator during transport. A brief review of the surgical facemask and N95 effectiveness to prevent viral respiratory infections is provided.