Excessive Blood Clotting Average Cost

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What is Excessive Blood Clotting?

Any type of blood clot requires immediate treatment to give the cat the best chance to recover. Be aware, however, that most cats who "throw" a blood clot will experience another one a few months later.

Excessive blood clotting can be caused by a wide number of conditions and is often the result of some type of heart disease. The most common type of blood clot is called a saddle thrombus. This type of blood clot is seen almost exclusively in cats and is usually an indicator of serious heart disease. A cat suffering from this type of blood clot may have trouble moving its legs and will experience agonizing pain.

Symptoms of Excessive Blood Clotting in Cats

A blood clot can form inside the heart or a blood vessel (a thrombus) and may travel through the bloodstream (embolism). If all or part of a clot is dislodged from its point of origin and travels through the bloodstream, it may become lodged in a new location (thromboembolism). The most common blockage point is located in the lower abdomen where the aorta branches out to supply blood to both hind legs. This area is known as the saddle. A clot often comes to rest at this point, blocking circulation. Common symptoms are listed as follows:

  • Cold rear limbs
  • Weakness
  • Sudden paralysis
  • Dragging of limbs
  • Vomiting
  • Difficulty breathing
  • Crying

Although cats are not the only animal to suffer from excessive blood clots, they are the most prone to the condition. Certain breeds such as Abyssinians, Ragdolls and Birmans are more likely to develop blood clots than other breeds. Middle-aged male cats are also at increased risk and are twice as likely to develop an aortic thromboembolism as females. 

Causes of Excessive Blood Clotting in Cats

The most common result of blood clots in cats is the development of a saddle thrombus. The technical term for the condition is feline aortic thromboembolism (FATE). FATE affects as many as 25 percent of all cats with the common feline heart condition hypertrophic cardiomyopathy. In some instances, FATE is the first and the only sign of heart disease. Other heart diseases that can cause excessive blood clotting include restrictive cardiomyopathy and dilated cardiomyopathy. 

Hypertrophic cardiomyopathy, restrictive cardiomyopathy and dilated cardiomyopathy all cause structural changes in the heart. These changes weaken the heart muscle and make it unable to properly pump blood. Stagnant blood in the heart can lead to the formation of blood clots. The clots will eventually dislodge and enter the bloodstream. If the clot is large enough, it will form the classic saddle thrombus. Smaller fragments may find their way to the brain, intestines or kidneys.

Other causes of excessive blood clotting in cats include hyperthyroidism and lung cancer.

Diagnosis of Excessive Blood Clotting in Cats

The diagnosis of a blood clot in cats is based on what the veterinarian notices at the examination. Lab work and diagnostic imaging may be necessary to confirm the diagnosis in order to detect any underlying heart disease and to rule out other potential conditions. The complete diagnostic workup can include:

  • Complete blood count (CBC) to check for anemia and blood-clotting factors
  • X-rays of the chest to evaluate heart size and lung condition
  • Doppler test to check blood flow levels in the legs
  • Urinalysis
  • Biochemistry profile

Your veterinarian may ask you when the cat first started showing symptoms of discomfort to help make the correct diagnosis.

A blood clot can have serious consequences if not handled promptly. A cat with an acute case of FATE will be required to remain in the animal hospital for at least 48 hours before going home. In some, cases, even with the best of care, a cat must be humanely euthanized.

Treatment of Excessive Blood Clotting in Cats

Pain Management

Strong painkillers are administered to help the cat relax. The pain alone could send them into heart failure and eventual death.

Fluid Therapy

Fluid therapy is critical to prevent dehydration and treat circulatory shock. In heart disease patients, however, it must performed with care.

Prevent Further Clot Formation

Once a cat has suffered a blood clot, it is likely to experience another one. Taking anti-clot medication can help prevent the formation of another clot. Although aspirin has been the traditional drug used to treat the condition, the human anti-clot drug Plavix is now being considered for use with cats. 

Recovery of Excessive Blood Clotting in Cats

As with any serious medical condition, it is critical that you keep all follow-up appointments for your pet. Your veterinarian will probably recommend strict cage rest for your cat for a certain period of time. Depending on the severity of the blood clot, this can range from several days to a couple weeks. Nursing care may be required until the cat regains function of its hind legs. 

Recovery for a cat affected by a blood clot depends on the severity of the obstruction and the integrity of the heart. Cats who only suffered a mild blockage with minor paralysis may experience a complete recovery if given the correct treatment. 

Excessive Blood Clotting Questions and Advice from Veterinary Professionals

Kat Kat
14 Years
Critical condition
0 found helpful
Critical condition

Has Symptoms

Painful Urination

Medication Used


My Kat Kat suffered a sudden blood clot that caused vomiting and immediate paralyzation of her hind legs. Which ultimately killed her within hours of happening. It came on without any warning. The only symptoms she had in the 3 months prior was painful or difficult urination. Which i took her to the vet for and we did CBC ..X-ray..and urinalysis. All test came back good except was diagnosed as hyperthyroid. Vet attributed the painful or difficult urination problem to FLUTD or kidney stones/crystal. But i do not believe this to be the cause. I found a small blood soaked like clot of something on the edge of her litter box. I didn't know what it was at the time. But now i believe it to be the reason for the urination pain/difficulty. Could blood clots be so excessive that they end up in the bladder or block the urethra and therefore cause it to mimick FLUTD or stones or crystal blockage? Is it possible?

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No name
Indian breed
1 Month
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Difficulty Walkin
Difficulty Walking

I took a slay kitten this morning. It seemed like dying. Its rear limbs are weak and the kitten is having difficulty walking in its rear. Then I checked the body there is tumor like blood clot near the spine above the rear legs. Can i remove the blood clot myself?

Dr. Michele King, DVM
Dr. Michele King, DVM
1608 Recommendations
Without seeing this kitten and knowing more what is going on, and where this blood clot is coming from, I cannot tell you to remove the clot. it may be best to leave it there, as removing it may cause further bleeding. He should probably see a veterinarian.

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grey tabby
7 Years
Serious condition
0 found helpful
Serious condition

Has Symptoms


my cat suddenly became paralyzed in left hind leg yesterday, am taking her to vet later today. should I give aspirin and if so, how much? she weighs about 13 lbs. she is about 7 yrs old.

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Street cat
3 Months
Mild condition
0 found helpful
Mild condition

Has Symptoms

Idhar udhar vagna pagal ki tarah

Jo Billi hai uskai gardan Kai pass eak cycle cadhgya Ur WO Avi sirf idhar udhar chal Raha hai Kuch khati nhi hai piti nhi hai pagal Jaise behave krte hai waisa lagraha hai

Dr. Michele King, DVM
Dr. Michele King, DVM
1608 Recommendations
I'm not sure what your question is that you need help with... please feel free to resubmit a question if you need anything for Gelhi!

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