![\\"logo\\"](\\"/img/logo-dpa-factchecking.svg\\"/) * WhatsApp service * About Us ![\\"IFCN](\\"/img/ifcn-certificate.png\\"/) ![\\"EFCSN](\\"/img/efcsn- certificate.png\\"/) # No lack of oxygen thanks to corona protective masks Oct 15, 2020, 5:53 p.m. (CEST) A video is circulating on the Internet claiming that masks are used Containing the corona pandemic is harmful to health (archived here). “Rebreathing our exhaled air inevitably creates a lack of oxygen and a carbon dioxide flood,” it says (from minute 3:10). A Such a deficiency harms the brain and inhibits its development. Just for For children and young people, masks are therefore an absolute “no-no” (8:50). Because The resulting damage cannot be reversed, warns the woman in the video. She describes herself as a neurologist and says so after working in Germany and London. EVALUATION: It is incorrect that a lack of oxygen is caused by rebreathing Air threatens under the mask. Because it only makes up a fraction of the air, that you breathe in. There is also a risk of carbon dioxide poisoning unrealistic. Wearing a mouth and nose covering is for healthy people basically harmless. FACTS: In the video, the air you breathe is the same as the air under the mask equated. But that is a mistake in thinking. Because you breathe significantly more air one than just those under the mouth and nose protection. A healthy adult has a tidal volume at rest of just under 500 milliliters to just under a liter ranges, explains Michael Achenbach, doctor and spokesman for the professional association of children and... Youth doctors (BVKJ). Under load this can easily be several liters increaseable. The air under the mask, on the other hand, is significantly less than 50 milliliters. A lack of oxygen is therefore threatened by a corona virus Everyday mask is not. The air under an everyday mask also mixes with the air from outside. With such masks you breathe through the fabric, but air also comes out of it sides. So this is not an unrestricted issue so-called dead space volume. This refers to the space in the respiratory tract in which there is no exchange of fresh, oxygen-rich air. The Exhaled air still contains around 17 percent oxygen, while With fresh air it is almost 21 percent. Children could also wear everyday masks. It's been a long time in the hospital common - for example in a cancer ward. “That has never been a cause for concern,” says Achenbach. From completely closed masks such as dust masks The doctor advises against this for children from the hardware store. The video also ignores the fact that the body reacts accordingly if it should not receive enough oxygen-rich air. «That's what it's for Receptors in the brain, you simply breathe deeper and faster,” explains Achenbach. According to experts, wearing a mouth and nose cover is healthy Generally harmless to humans. This is how the German Respiratory League goes from that with a simple surgical mouth guard or one yourself The mouth and nose covering produced causes an increase in carbon dioxide is unlikely - because these masks are not completely tight. This could only occur in patients with chronic respiratory failure Carbon dioxide content and the “work of breathing” increase, “so that the coverage of Mouth and nose as unpleasant or threatening and subjectively as shortness of breath is felt”. Also with professional masks (FFP2, FFP3). Threatening increases in CO2 levels in the blood due to masks “unlikely”. There is no risk of “carbon dioxide anesthesia” when wearing corona masks the woman in the video claims (from minute 6:35). There are videos on the Internet widespread in which CO2 measuring devices analyze the air under the mask show greatly inflated values. However, such measurements are misleading because they... The devices used are often not intended for the purpose of breathing air analyze, as Professor Uwe Pliquett from the Institute for Bioprocess and Analysis measurement technology explained in Heilbad Heiligenstadt. Even if you know of increased CO2 levels under the mask due to the remaining exhaled air, as seen in some videos, is put into perspective This is the case when looking at the entire air we breathe, explains Pliquett. «Then lie the average CO2 value of the inhaled air is around 0.1 to 0.2 percent, depending depending on how much CO2 is in the ambient air.” This corresponds to the values which, according to the Federal Environment Agency, are still below a critical level. The video also disputes the protective effect of masks. So It says that a standard mask “in no way protects against a virus” (from Minutes 6:10). However, there is scientific evidence of its effectiveness the German Press Agency already in a fact check from October 12, 2020 has shown. According to a Canadian study, mouth and nose protection reduces the risk of death Researchers the risk of infection. A similar result is also reached Working paper by German researchers. \--- Left: Post on Facebook: (archived: Video on YouTube: (archived: Federal Environment Agency on recommended CO2 limit values: (archived: Communication from the respiratory league: zu-covid-19/maskenpflicht.html (archived: Dissertation on surgical masks: (archived: Mask recommendation from the German Society for Pediatric and Adolescent Medicine (DGKJ): (archived: Article about the study on the effectiveness of masks in the Ärzteblatt (June 2nd). 2020): Protective effects of social distance and mouth and nose protection (archived: Press release on the study from Mainz: “Masks obviously contribute significantly Containing the Corona Pandemic” (June 8, 2020): mainz.de/presse/aktuell/11532_DEU_HTML.php (archived: Fact check from Mimikama on the topic: breathing-masks-especially-for-children-dangerous-co2/ (archived: dpa fact check “Video does not prove CO2 poisoning from masks”: factchecking.com/germany/200911-99-521640/ dpa fact check “Medical professionals: Children do not die from masks alone - several Deaths invented»: dpa fact check “Expert statement on masks spread in the wrong context”: \--- Contact the dpa fact check team: faktencheck@dpa.com powered by dpa-newslab | Imprint | Privacy | About:
A video is circulating on the Internet in which it is claimed that masks to contain the corona pandemic are harmful to health archived here Rebreathing our exhaled air inevitably creates a lack of oxygen and a flood of carbon dioxide it says from minute 310 Such a deficiency harms the brain and inhibits its development Masks are therefore an absolute nono especially for children and young people 850 The woman warns in the video that the resulting damage Cannot be reversed She describes herself as a neurologist and says she works in Germany and London