WebMD的新闻简报

Face Shields May Be Next Step to Prevent COVID

面罩的照片

2020年5月29日 - 口罩已成为在努力战斗COVID-19司空见惯,但有的医生说现在是时候更进一步采取保护并重全面罩作为限制开始慢慢放松。

Face shields are nothing new in medical settings -- doctors and nurses who treat coronavirus patients are using them along with standard face masks. Health care professionals are split on whether they should also be worn by children, teachers, and in offices while states reopen.

“Face shields appear to have a number of advantages: They’re easy to wear correctly and good at blocking droplets,” says Eli Perencevich, MD, an infectious disease doctor at the University of Iowa and the Iowa City Veterans Affairs Health Care System. “They’re really a better option for protection.”

Perencevich and his colleagues published a report inJAMA上个月,认为增加的测试,接触者追踪和社交距离使用时面罩比标准的蒙版的更多COVID-战斗潜力。

A few things make shields superior, he says. For one, many people wear masks that don’t fit well, so they don’t work as well. They also prompt people to touch their faces more, increasing the risk of viral spread. They leave much to be desired in terms of comfort, he says, and they make it harder to breathe.

Shields come with the perk of being easily sanitized and reused, says Keith Kaye, MD, a professor of medicine and director of research for the division of infectious diseases at the University of Michigan Medical School.

Unlike masks, clear shields also allow for better communication -- people can read facial expressions, and those who are hearing impaired can read lips, he says.

“我认为我们将看到越来越多的面罩的使用,”凯说。“尤其是随着COVID继续带来问题。”

虽然没有口罩如何工作了大量的数据,最近的一项在中国的研究发现,近80%的穿着在家里减少传输到同一家庭中的其他成员的面具。

Shields, meanwhile, have been found to successfully block droplets. Onecough simulation study in 2014found that a shield may reduce exposure by 96% when worn within 18 inches of someone coughing.

In addition, face masks are not meant to protect the wearer -- they leave other vulnerable parts of the face exposed, like the eyes. They are meant to keep an asymptomatic or pre-symptomatic person from它传播给他人.

但是,并非所有的医生都在日常使用更极端的防护装备出售。丹Kuritzkes,MD,传染病在布里格姆妇女医院在波士顿的首席说,眼睛覆盖面,盾牌提供可能不需要的人,除非他们到COVID,19例患者提供医疗服务。

“从理论上讲,有可能是粒子能在别人的眼睛,造成感染的土地,但是我们还没有充分的证据表明会发生,”他说。“我认为底线是面向大众,没有理由要戴面罩。”

他还表示,他们可能不会帮助预防空气传染,因为有它滴空气可以从底部开口下护板被吸。

Face shields are important in health care settings because, in those situations, mucous membranes around the caregivers’ eyes that could come into contact with harmful droplets while they do procedures like intubation, says Timothy Brewer, MD, a professor of medicine and epidemiology at the UCLA Fielding School of Public Health and Medicine.

只要通过建议每个人都需遵守戴上口罩,这种风险将不存在非医护人员。

“这可能在别人眼里可能获得,如果有人打喷嚏 - 这就是为什么打喷嚏的人也应戴口罩,”布鲁尔说。

与此同时,世界其他地区正迎来使用面罩医院之外的。School children in Singapore被给予面罩,因为他们后脑勺类在未来的日子里。

美国传染病学会已经上市的广泛使用防护装备,包括防护面罩,在解除限制的过程,但仍然CDC建议只口罩的卫生保健领域之外的人。

尽管如此,个人和公司都在捕病毒的风险越高越好,以帮助供应盾牌医护人员和其他人都。

亚马逊announcedthis month that its engineers are developing face shields to sell on its site after donating almost 10,000 to people on the front lines.

Other efforts have come from everyday citizens. Katherine Marcano-Bell and her family have converted part of their 1,300-acre pig farm into a shield-making operation, and have delivered them to hospitals, clinics, meatpacking plants, and families who have made specific requests for them.

“我认为它不会伤害到戴一个,特别是如果你生病或免疫功能低下,”马卡诺-Bell说。

WebMD健康新闻简短 Reviewed byBrunilda Nazario, MD于2020年5月29日

来源

CDC: “About Cloth Face Coverings.”

CNBC.

The Journal of the American Medical Association: “Moving Personal Protective Equipment Into the Community: Face Shields and Containment of COVID-19.”

美国传染病学会:“政策与公共健康建议对于缓解COVID-19疏远的限制。”

[职业与环境卫生: “Efficacy of Face Shields Against Cough Aerosol Droplets From a Cough Simulator.”

Katherine Marcano-Bell.

Keith Kaye, MD, professor of medicine and director of research, division of infectious diseases, University of Michigan Medical School.

Eli Perencevich, MD, infectious disease doctor, University of Iowa and the Iowa City Veterans Affairs Health Care System.

丹Kuritzkes,医学博士,主任传染病,布里格姆妇女医院,波士顿。

Timothy Brewer, MD, professor of medicine and epidemiology, UCLA Fielding School of Public Health and Medicine.

Channel News Asia: “COVID-19: Pre-school and primary school students to get face shields, hand sanitiser.”

BMJ:“在通过面罩使用,消毒和社会疏远家庭SARS-COV-2的二次传播的减少:在北京,中国队列研究”

© 2020 WebMD, LLC. All rights reserved.