First, read the English article below.

If giving the cat medicine, hold the cat with your non-dominant hand while you pick up the medication with your dominant hand. If you have a helper, have them hold the wrapped cat for you.  If you don’t, slide your elbow and forearm of your non-dominant hand alongside the cat’s wrapped body until you are holding it between your arm and your chest while the wrapped cat is still on the table. Put your thumb on one side and your forefinger on the other side of your cat's mouth along the cheeks where the jaw hinges. You will be able to just barely be able to feel the teeth through the cheeks. Basically you are pushing your fingers between the upper and lower jaw while applying downward pressure. This pressure will be uncomfortable for the cat so it will open its mouth. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Giữ mèo cố định trên bàn. Cố định vị trí ngón tay. Ép nhẹ cho đến khi mèo mở miệng bằng cách tạo áp lực lên hàm dưới của mèo cho đến khi chúng mở miệng ra.