Cat Aortic Thromboembolism Emergency

Feline aortic thromboembolism (FATE) is an acutely painful and distressing complication of heart disease that requires immediate pain management and welfare assessment.

Key Facts

FATE occurs when a blood clot lodges in the aortic trifurcation, blocking blood to the hindlimbs
It occurs almost exclusively in cats with underlying cardiac disease, usually hypertrophic cardiomyopathy
Affected cats show sudden hindlimb paralysis, cold hindlimbs, vocalisation from pain, and hypothermia
The condition is extremely painful and approximately 50% of cats are euthanised at presentation
Survivors face ongoing cardiac disease management and risk of repeat thromboembolism

Welfare Considerations

FATE is one of the most acutely painful conditions encountered in companion animal practice. The sudden loss of blood flow to the hindlimbs causes ischaemic pain equivalent to severe limb ischaemia. The combination of severe pain, loss of function, and fear creates acute suffering of high intensity. Immediate aggressive pain management is the welfare priority. Quality of life assessment is essential for survival decisions given the severity of the condition and significant re-occurrence risk.

What You Can Do

Seek emergency veterinary care immediately if your cat shows sudden hindlimb weakness or paralysis
Allow the vet to prioritise pain management before further diagnostics
Have an honest quality of life conversation with your vet about treatment versus euthanasia options
If cardiac disease is known in your cat, discuss thromboprophylaxis with your vet
Monitor cardiac cats closely for signs of deteriorating heart function that increase thromboembolism risk