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Precautions for wearing a mask

Use time


From the perspective of human physiological structure, because the blood circulation of the nasal mucosa is very strong, the passage in the nasal cavity is very tortuous, and the nose hair constitutes a filtering "barrier". When air is sucked into the nostril, the airflow forms a vortex in the tortuous passage, which warms the airflow sucked into the nasal cavity. Some tests have shown that when cold air at minus 7°C is sucked into the lungs through the nose, the airflow has been heated to 28.8°C, which is very close to the temperature of the human body. If you wear a mask for a long time, the nasal mucosa will become fragile and lose the original physiological function of the nasal cavity, so you cannot wear a mask for a long time. Masks can only be worn in special environments, such as places with many people and poor air circulation. Of course, walking in the wild, in order to resist wind, sand and cold, or activities in an environment with air pollution, you need to wear a mask, but the time should not be too long. In addition, during the flu season, you should wear a mask when you go to public places where there may be a large number of pathogens. Wearing a mask is just one of the ways to prevent respiratory infectious diseases, and the most important thing is to maintain good living habits.


Cleaning and maintenance


The outer layer of the mask often accumulates a lot of dust, bacteria and other dirt in the outside air, while the inner layer blocks the exhaled bacteria and saliva. Therefore, the two sides cannot be used alternately, otherwise the dirt on the outer layer will be directly attached. It becomes a source of infection when it is inhaled into the human body on the face. When the mask is not worn, it should be folded into a clean envelope, and the side close to the nose and mouth should be folded inward. Do not put it in your pocket or hang it around your neck. If the mask is moistened by exhaled heat or saliva, its function of blocking germs will be greatly reduced. Therefore, it is best to prepare a few more masks so that they can be replaced and washed once a day. When washing, it should be scalded with boiling water for 5 minutes.


mask


Masks should be cleaned and disinfected every day. Both gauze masks and air filter masks can be disinfected by heating. The specific approach is:


1. Cleaning. First rub the gauze mask gently with warm water and soap. The bowl-shaped mask can be gently cleaned with a soft brush dipped in detergent, and then rinsed with clean water. Please be careful not to rub it hard, because if the warp and weft gap of the gauze is too large, the anti-droplet effect will be lost.

2. Disinfection. Soak the cleaned mask in 2% peracetic acid solution for 30 minutes or boil it in boiling water for 20 minutes or steam it in a steamer for 15 minutes, and then dry it for later use. This method is suitable for gauze masks and bowl-shaped masks.

3. Check. Before using again, you should carefully check whether the masks and face shields are still in good condition. For both gauze masks and face shields, you can take the light transmission method, that is, take the light in front of the lamp to see if there are obvious light spots, and the middle part and the edge part are transparent. Is the rate consistent? If in doubt, replace it with a new one. In any case, face masks and masks are generally updated after cleaning 3 to 7 times, and masks of particularly good quality can be cleaned 10 times. Activated carbon adsorption masks should pay attention to regular replacement of the activated carbon interlayer. If the activated carbon interlayer is not replaceable, it should be replaced after 7 to 14 days. This type of mask cannot be reused after cleaning.


Handle properly


Daily use of masks should be handled properly. Masks used by patients or used during care should be placed in a lined container in the patient room before processing.



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