First, read the English article below.

In some cases you absolutely shouldn't remove your own stitches. If your stitches were inserted after a surgical procedure, or if the recommended healing time (usually 10-14 days) hasn't elapsed, removing them yourself can put you at greater risk for infection and may prevent your body from healing properly. Your skin needs to have grown back together before your stitches are removed.  Keep in mind that when you go to the doctor, adhesive strips are often placed on the skin after stitch removal to continue to facilitate the healing process. If you do it at home, you may not be getting the care you require. If you want to double check whether it's OK to remove your stitches, give your doctor a call. He or she will let you know whether it's safe enough to do it yourself. However, they will likely recommend you come into the office to get your stitches removed. If your wound looks as if it's getting red or more sore, do not remove your stitches: go to your doctor. You may have an infection. Keep in mind that in many cases, you can get your stitches removed without going through the regular doctor's appointment process. You might be able to walk right in for a quick stitch removal. It's likely that a nurse can check your wound and remove the stitches if the wound has healed. Call your doctor and ask. Use a sharp pair of surgical scissors if possible. Sharp nail scissors may also work. Avoid using any type of blunt edge, and don't use a knife - it's too easy for knives to slip. Drop them in a pot of boiling water for at least 20 minutes, let them thoroughly dry on a clean paper towel, then swab them thoroughly with a cotton ball soaked in rubbing alcohol. This will ensure the cutting tool and tweezers don't transfer bacteria to your body. There are a few other things you should have on hand. Gather sterile bandages and antibiotic ointment in case you need to treat an area that starts to bleed. You shouldn't need to use these supplies, since if your skin has properly healed, no bandage is necessary, but it's... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Đảm bảo rằng việc rút chỉ là an toàn. Chọn dụng cụ để cắt chỉ. Sát trùng nhíp và dụng cụ cắt. Tìm thêm một số vật dụng y tế khác. Rửa và sát trùng chỗ khâu.