It is not possible to directly sterilize cats with pyometra. The pyometra needs to be treated first. The treatment methods are as follows:

1. First, if the cat’s pyometra is not serious, the owner can give the cat some anti-inflammatory drugs to control the development of the disease.

2. Secondly, if the condition is slightly more serious, you can take the cat to the pet hospital for intravenous injection. This is more effective than taking anti-inflammatory drugs, but they are all methods that treat the symptoms rather than the root cause.

3. Finally, for cats with more serious conditions, the best treatment is to remove the uterus. Before surgery, the owner needs to adjust the cat's physical condition. Surgery can only be performed if the physical condition meets the standards.

What should be paid attention to when neutering cats:

1. Older cats need pre-operative examination. Before surgery, you need to fast for about 10 hours and water for about 8 hours.

2. After surgery, the cat needs to wear an Elizabethan ring to prevent it from licking.

3. The wound area should be kept dry and clean. You cannot eat until 8 hours after surgery.

4. Try to let the cat rest as much as possible, which will help the wound recover.