Cooling vests alleviate perceptual heat strain perceived by COVID-19 nurses

Johannus Q. de Korte, C. Bongers, M. Catoire, B. Kingma, T. Eijsvogels
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引用次数: 13

Abstract

ABSTRACT Cooling vests alleviate heat strain. We quantified the perceptual and physiological heat strain and assessed the effects of wearing a 21°C phase change material cooling vest on these measures during work shifts of COVID-19 nurses wearing personal protective equipment (PPE). Seventeen nurses were monitored on two working days, consisting of a control (PPE only) and a cooling vest day (PPE + cooling vest). Sub-PPE air temperature, gastrointestinal temperature (Tgi), and heart rate (HR) were measured continuously. Thermal comfort (2 [1–4] versus 1 [1–2], pcondtition < 0.001) and thermal sensation (5 [4–7] versus 4 [2–7], pcondition < 0.001) improved in the cooling vest versus control condition. Only 18% of nurses reported thermal discomfort and 36% a (slightly) warm thermal sensation in the cooling vest condition versus 81% and 94% in the control condition (OR (95%CI) 0.05 (0.01–0.29) and 0.04 (<0.01–0.35), respectively). Accordingly, perceptual strain index was lower in the cooling vest versus control condition (5.7 ± 1.5 versus 4.3 ± 1.7, pcondition < 0.001, respectively). No differences were observed for the physiological heat strain index Tgi and rating of perceived exertion across conditions. Average HR was slightly lower in the cooling vest versus the control condition (85 ± 12 versus 87 ± 11, pcondition = 0.025). Although the physiological heat strain among nurses using PPE was limited, substantial perceptual heat strain was experienced. A 21°C phase change material cooling vest can successfully alleviate the perceptual heat strain encountered by nurses wearing PPE.
降温背心可缓解COVID-19护士感知的感性热应激
冷却背心减轻热负荷。我们量化了穿着个人防护装备(PPE)的COVID-19护士在轮班期间的感知和生理热应变,并评估了穿着21°C相变材料冷却背心对这些措施的影响。对17名护士进行2个工作日的监测,包括对照组(仅PPE)和降温背心日(PPE +降温背心)。连续测量亚ppe温度、胃肠温度(Tgi)和心率(HR)。热舒适(2[1 - 4]对1[1 - 2],条件< 0.001)和热感觉(5[4 - 7]对4[2 - 7],条件< 0.001)在冷却背心与对照组相比有所改善。在降温背心条件下,只有18%的护士报告了热不适,36%的护士报告了(轻微)温暖的热感觉,而在对照组条件下,分别有81%和94% (OR (95%CI) 0.05(0.01-0.29)和0.04(< 0.01-0.35))。因此,与对照组相比,冷却背心组的感知应变指数更低(5.7±1.5比4.3±1.7,p条件< 0.001)。在不同条件下,生理热应变指数Tgi和感知劳累等级无差异。冷却背心组的平均心率略低于对照组(85±12比87±11,p条件= 0.025)。虽然使用防护用品的护士的生理性热应变有限,但存在大量的感性热应变。21°C相变材料冷却背心可以成功缓解护士佩戴PPE时遇到的感知热应变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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