It is possible to save the cat. The chance of rescue will be greater eight hours after the cat becomes ill. Feline thrombosis is a systemic disease that can cause paralysis without any signs. It is a systemic disease generally caused by heart problems. There is a certain chance of survival after the onset, but it cannot be cured. Cured cats should take feline thrombosis drugs, and it is best to have a physical examination once a year.