Wearing cooling vests during a COVID-19 shift ensures that nurses experience less heat during their work. During their shifts, nurses wear protective clothing for three hours in a row, during which the temperature can rise to as much as 36 degrees. The cooling vests offer such effective cooling that they are now part of the standard work clothing for nurses in the COVID nursing departments at Radboudumc.
Due to the high level of contagiousness present with COVID-19, health care personnel have to work in protective clothing that is not or is barely ventilated. Good protective clothing is essential for their work, but the temperature under these suits can reach up to 36 degrees, leading to reduced comfort. The cooling vests – originally developed for elite athletes competing at the Tokyo Summer Olympic Games – were modified and prepared for use in COVID-related health care.
Cooling vests for top athletes
Thijs Eijsvogels, exercise physiologist and principal investigator, explains: “The elite-athlete cooling vests were not immediately suitable for this use because they were designed to cool aggressively before or after physical exertion. COVID care involves long-term use in which the vests are worn during the health care activities. The cooling power of the modified vest is lower, but it works longer.”
Although the cooling vests were already in use, a study of their effects was being carried out at the same time. The Cooling for COVID-19 healthcare workers (COOLVID) study followed 17 nurses working in COVID care for two days: one day with and one day without a cooling vest. They wore the vest over their medical clothing but under their protective clothing. Study measurements included core temperature and heart rate, as well as subjective measurements such as comfort and heat sensation.
Less heat stress during a shift
The results, now published in Temperature, show that the participants’ core temperature increased slightly but not enormously, even while the temperature under their protective clothing did. Therefore, the cooling vest had little effect on core temperature. However, the participants’ heart rates were a few beats per minute lower on the days they wore the cooling vests. The biggest difference was in the subjective perceptions of the health care providers. Co-research Yannick de Korte: “Without a cooling vest, almost 90% of the nurses experienced discomfort and warmth. With a cooling vest, only 20-30% of the participants experienced this. They therefore perceived the conditions under which they have to do their work as more pleasant and comfortable. Virtually everyone said: ‘With a cooling vest, I can work like I normally do without protective clothing’.”
Medical Heat Stress
The COOLVID study was carried out as part of the Medical Heat Stress project. COOLVID is a collaborative project between TNO, as part of its brains4corona program, and Radboudumc, building on the Thermo Tokyo project. The study was financed by ZonMw. The researchers have developed an infographic for the use of the cooling vests, which has been translated into nine languages and is supported by EU Horizon 2020 (HeatShield #668786).
About the publication
Published in Temperature: Cooling vests alleviate perceptual heat strain perceived by COVID-19 nurses - Johannus Q. de Korte, Coen C.W.G. Bongers, Milène Catoire, Boris R.M. Kingma, Thijs M.H. Eijsvogels. https://doi.org/10.1080/23328940.2020.1868386
Related news items
Radboud Young Academy safeguards the future of science21 January 2021
New platform to provide advice on policy, create an interdisciplinary network of early career scientists, and promote career development.read more
Increase radio- and immunotherapy efficacy by targeting hypoxia21 January 2021
In a paper recently accepted by Clinical Cancer Research, Daan Boreel, together with Paul Span, Sandra Heskamp, Gosse Adema and Jan Bussink, reviews the therapeutic potential of decreasing the lack of oxygen (hypoxia) often found in solid tumors.read more
Radiation boost lowers risk of prostate cancer recurrence21 January 2021
An additional external-beam radiation dose delivered directly to the tumor can benefit the prospects of men with non-metastatic prostate cancer, without causing additional side effects. The risk of relapse within five years for these men is smaller than for men who did not receive this boost.read more
New research through grants for Radboudumc researchers14 January 2021
Several researchers at the Radboudumc have received grants to start new studies, including on rare diseases, liver disease and cancer metastases. These are grants from the Dutch Research Council, European Joint Programme on Rare Diseases and the Gastric Liver Disease Foundation.read more
Should we prepare for a corona-related depression wave? Indira Tendolkar and Eric Ruhé talk about their research projects13 January 2021
Since the outbreak of the SARS-CoV-2, many of us have been staying at home in order to limit our social interactions, to keep ourselves and others safe from the virus. Yet, there’s also concern about what social distancing and anxiety generated by media reports are doing to people's mental health.read more
RIMLS online award ceremony proudly presenting the winners13 January 2021
In this special webinar of the RIMLS New Year Celebration, scientific director René Bindels reviewed 2020 and looked forward to 2021. But more importantly a number of researchers received prizes in the traditional RIMLS awards ceremony.read more