Blood in the Chest in Cats

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Hemothorax in Cats

Hemothorax is the medical term used to identify a condition in which blood has collected in the chest cavity, or thorax. This condition may occur suddenly or over a long period of time, and it can occur for a variety of reasons. There does not appear to be a particular age, gender, or breed of cat that is more predisposed to this condition than another.

Symptoms and Types

Acute onset:

  • Symptoms of decreased blood volume usually occur before sufficient blood volume accumulates in the pleural space (lining of the chest cavity)
  • Impaired respiration/respiratory distress
  • Pale membranes
  • Weakness and collapse
  • Weak, rapid pulse
  • Breathing sounds become dull

Associated with a causative factor:

  • Trauma
  • Blood clotting (coagulation) disorder

Causes

  • Trauma
  • Bleeding from any artery or vein of the thoracic wall or spine, damaged heart, lungs, thymus (a small glandular organ that is situated behind the top of the breastbone), and diaphragm
  • Rodenticide ingestion is a common cause
  • Herniated liver or spleen
  • Tumor
  • Coagulopathies (clotting disorders)
  • Clotting factor defects are more common than platelet abnormalities
  • May be congenital or acquired
  • Liver failure
  • Cholangiohepatitis (inflammation of the gallbladder and bile ducts) with concurrent small bowel disease
  • Lung lobe twisting
  • Acute thymic hemorrhage in young animals (i.e., thymus: gland at the base of the neck)

Diagnosis

Your veterinarian will perform a complete physical exam on your cat, including a standard blood chemical profile, complete blood count, an electrolyte panel and a urinalysis so as to rule out other causes of disease. You will need to give a thorough history of your cat's health, onset of symptoms, and possible incidents that might have preceded this condition. Clotting profiles should be performed on a blood sample to verify for delayed clotting times.

The packed cell volume, hemoglobin and platelet count will be lower than normal. The blood chemical profile may show signs of liver failure (which would cause bleeding into bodily cavities since clotting factors would not be produced).

The fluid in the chest should be sampled and analyzed at a laboratory for a comparison with peripheral blood. Platelets are often found in chest fluid samples.

X-rays are crucial for visualizing the extent of the fluid build-up in the chest, the collapse of lung lobes, and any masses which might be present in the chest cavity. An ultrasound of the chest can reveal a diseased condition with an even greater sensitivity than an x-ray image would.

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pleural space

The area between the folds of the pleura; airtight

platelet

A cell that aids in clotting

thoracic

Pertaining to the chest

thymus

A gland found near the midline of the chest cavity; found mostly in young animals

urinalysis

An in-depth examination of the properties of urine; used to determine the presence or absence of illness

hemorrhage

Extreme loss of blood

hemoglobin

The protein that moves oxygen in the blood

bile

The fluid created by the liver that helps food in the stomach to be digested.

breastbone

An animal’s sternum

diaphragm

The muscle in the abdomen that aids in breathing

ducts

A passage in the body with walls

artery

A large blood vessel that transports blood out of the heart.

Courtesy of petmd.com Original Article

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