How to wear a mask correctly
Standard attire
If there is a gap between the mask and the face, when a person breathes, the airflow will flow towards the gap, including dust, droplets, aerosols, etc. The attached virus can enter the body through gaps with the airflow, causing infection. Therefore, officers and soldiers must wear masks in a standardized manner. When wearing the mask, first unfold the arc reserved layer of the mask, fix the mask on the face through the ear band, completely cover the mouth, nose and chin, and then firmly squeeze the metal strip above the bridge of the nose to make it close to the bridge of the nose, and finally adjust the air tightness of the chin area. If necessary, the hanging rope can be tied from the back of the head to increase safety. During the entire wearing process, avoid touching the outside of the mask with your hands. [10]
Distinguish between advantages and disadvantages
The disposable medical mask that everyone wears is divided into three layers: the outermost layer is a waterproof layer, the middle layer is a filtering layer, and the inner layer is a moisture absorbing layer. The moisture absorbing layer can absorb moist gases exhaled from the mouth and nose, keeping the mask dry. If the mask is worn backwards, the gas exhaled by the mouth and nose cannot be effectively absorbed, and the mask is prone to moisture and loses its protective effect. Before wearing a mask, the nose clip of the mask should face upwards and the dark side should face outwards. If the facial mask has no color difference, you can judge from the wrinkles of the facial mask that the wrinkles are downward.
Timely replacement
In general, disposable medical masks and surgical masks are limited in use and should not be used for more than 8 hours in total; Occupational exposure personnel should not use masks for more than 4 hours. After the use time of the facial mask reaches the upper limit, it can no longer be used. When the following situations occur, the mask should be replaced in a timely manner: the mask is damaged or broken; Masks contaminated with foreign substances such as blood stains or droplets; Have used or had contact with patients in isolation wards; Masks are damp; There is a peculiar smell in the facial mask; Significant increase in respiratory resistance; Masks cannot fit tightly to the face.
prohibitions
Don't pull your chin, hang it on your arm
Some people pull the mask up to their chin when wearing it, exposing their mouth and nose. This not only loses the protection of the mouth and nose, but also pollutes the inner layer of the mask, increasing the risk of contracting the virus when wearing the mask again. Some people take off their masks and then wear them on their arms, which is not advisable. During physical activity, masks may come into contact with items contaminated with viruses, and the inner layer of the mask is also prone to dust and bacteria, making it more susceptible to infection when worn again.
Do not touch the outside of the mask
The facial mask can block water drops. If you touch the outside of the mask with your hands, your hands may be contaminated by the outside of the mask. If you touch your nose and eyes with unclean hands, the virus will unknowingly enter your body. When taking off a mask, use a hanging rope to remove it and discard it in the air. Try to avoid contact between the mask and any part of the body.
Change Block Edit Broadcast
1. The mask is contaminated with foreign substances such as blood stains or droplets.
2. The user feels an increase in respiratory resistance.
3. The face mask is damaged.
4. Dust proof filter cotton. When the mask is in good contact with the user's face and the user feels significant respiratory resistance, it indicates that the filter cotton is filled with dust particles and should be replaced with a new mask.
5. Anti toxic filter box, when the mask has good contact with the user's face and the user smells toxic substances, it should be replaced with a new one.
