How often do I wear N95 & KN95 masks?

Do you know how to use N95 & KN95 masks correctly?

In the face of this outbreak against the Coronavirus pneumonia, mask shortages. In the case of manufacturers overtime production and disposal of the mask after use. “Masks” have become sensitive words that affect the nerves of society.

Wearing a mask like a flooded animal, wearing a mask has become the first line of defence to do a good job of preventing and controlling people. Then comes a new question: How can I use the N95 & KN95 mask that can prevent this outbreak?

01 How to wear it?

Wearing a medical mask is very important. Otherwise, even if you buy the right mask. Wearing the wrong mask will affect the filtering effect.

In this way, Liang Jian Sheng, director of the Disease Infection and Vector Biological Control Institute for Disease Control and Prevention, introduced the specific wearing stages.

1. Hold the protective mask with one hand, the side with the nose clip facing away;

2. Cover the nose, mouth and chin with a protective mask, and place the nose clip on the face.

3. Use your other hand to pull the lower strap over the head and place it under the ears behind the neck;

4. Then pull the upper lace to the middle of the top of the head;

5. Place the tips of two fingers on the metal nose clip, starting from the middle position, press the nose clip with your fingers pointing inward, and move and press to the sides respectively to shape the nose clip.

The important thing to consider is that if you go to a public place and do not contact the patient. Wearing surgical masks is sufficient to avoid excessive protection, but if you are in contact with the patient. If so, wear a mask of bio-resistant N95.

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02 Is there a breathing valve or no breathing valve for the mask?

No breathing valve mask: two-way protection, whether inhaled or exhaled, must be filtered by the mask.

Masks with one-way breathing valve: the wearer can only protect himself and cannot protect the environment. It is recommended that everyone wear a breathing valve mask.

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03 Can masks be reused?

Masks above the N95 can theoretically be used for 1 to 2 days. And cannot be reused after the disposable N95 mask is removed.

The N95’s mask is tightly secured, but when worn for a long period of time it will have a noticeable feeling of asthma. Wang Yuedan, a professor of immunology at Peking University’s School of Basic Medicine, reminds that when wearing N95 masks, time cannot exceed 4 hours at a time. If used regularly for prolonged periods of the N95, it will damage the lungs and cause emphysema and other problems.

Zong Zhiyong and Wang Yankun, who belong to the infection management department of Sichuan University’s West China Hospital, recommend not wearing an N95 mask for children under the age of 7. Even with a special air valve N95 mask. Be made, because the resistance to breathing is also very good, and children will be at risk of asthma.

Can the mask be used repeatedly?

Experts Zong Zhiyong and Wang Yanhuan clearly stated: “No, no matter what type of mask, there is a life span. It is recommended to replace the disposable medical mask once every 4 hours. The recommended time limit for medical protective masks is 6 to 8 hours.”

You must learn to wear a mask correctly in order to effectively prevent and control virus attacks.