[header] How to handle brachycephalic airway syndrome in cats [title] Relieve symptoms right away. [step] It is likely that your veterinarian will want to give your cat medication to relieve its symptoms. Corticosteroids or non-steroidal anti-inflammatory medications can be administered to temporarily relieve symptoms right away. 
Your cat will likely be given oxygen as well to improve its breathing. [substeps] It is not good for cats to be on corticosteroids long term, as they can cause a lot of side effects.