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Anemia

Liaison: Jan Young
Email: jannermd@yahoo.com

Anemia is a decrease in the number of erythrocytes or red blood cells (RBCs) circulating in the blood stream. It is not a disease in and of itself but, rather, is a symptom of a number of diseases. Regenerative anemia can occur while RBCs are still being produced, as a result of loss (bleeding) or increased destruction.  Nonregenerative anemia   is due to a lack of production of RBCs.  Anemia is also classified as either acute (sudden and rapid) or chronic (slow and long standing).

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Signs and Symptoms

Acute anemia can result in shock and even death if the  blood volume is not replaced rapidly. Signs include rapid heart rate, pale gums, bounding or weak pulse, and low blood pressure.

Chronic anemia is more subtle. Common signs and symptoms include easy tiring or panting and rapid heart rate in the absence of strenuous exercise, pale gums, depressed mood and energy level or even lethargy, and decrease in appetite. Jaundice (yellow whites of the eyes) or bruising may be present in certain conditions.


Causes

Causes of regenerative anemia:

Blood loss: external or internal bleeding resulting from injury, parasites, or  from rupture of a splenic tumor or other neoplasm.  

Hemolysis (break down of red blood cells): Immune-mediated hemolytic anemia (IMHA: see separate discussion), other immune-related hemolysis, metabolic causes, toxins, infections, and certain inherited diseases.

 

Causes of nonregenerative anemia:

Underproduction of blood cells: nutritional deficiencies, anemia of chronic disease, renal disease, primary bone marrow disease.


Risk Factors

Risk factors for anemia are the risk factors of the various underlying processes that produce the anemia.


Diagnostic Tests

  • Medical History.

  • Hematocrit or Packed Cell Volume (PCV) - a quick test for determining what percent of blood is RBCs.

  • CBC with platelet and reticulocyte count (young RBCs)  - Can detect anemia and may give information about the possible cause.

  • Depending on the results of these tests your vet may then obtain any of a number of special studies including perhaps: blood chemistry or other special blood tests, urinalysis, examination of stool for blood or parasites, xrays, or bone marrow biopsy.


Treatment Guidelines

Note: Treatment of animals should only be performed by a licensed veterinarian. Veterinarians should consult the current literature and current pharmacological formularies before initiating any treatment protocol.

The treatment of anemia is the treatment of the underlying causative condition. If anemia is severe and/or rapid in onset, blood transfusion may be necessary.


References

Anemia, The Merck Manual, Pet Health Edition four bones rating


Support Groups

Anemia is a symptom; appropriate support groups would relate to the underlying cause of the anemia.


Suggested Links

 

Blood Cells and Complete Blood Counts (CBC) in Animals at PetEducation.com  two bones rating

 

Dog Anemia at dog-health-guide.org two bones rating

 

 




 

 
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