Veterinary Emergency Clinic

Saddle Thrombus

What is Saddle Thrombus?

Saddle thrombus is a condition in which a blood clot forms and travels through the body. It goes through the bloodstream until it reaches an artery small enough that it cannot travel any more. This is usually where the aorta (a large blood vessel) branches to supply the back legs with blood. Cats are most often affected by this condition.

What causes Saddle Thrombus?

Heart disease is the most common cause of this condition.


What are the signs of Saddle Thrombus?

Usually the signs of saddle thrombus will come on incredibly quickly. The main sign is weakness or paralysis of the hind limbs. The feet will likely be colder than other parts of the body and may be bluish in color. Cats are typically in a lot of pain when they are experiencing this. They may be vocalizing loudly (howling, yowling, screaming). Your cat may also be hiding more and may not want to be touched. Panting can also be a sign as this condition causes extreme discomfort.


What should I do if I think My Cat May be Experiencing a Saddle Thrombus?

If you notice these signs, you should seek Veterinary care immediately.



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