MSD Manual

Please confirm that you are a health care professional

honeypot link

Blood Loss Anemia in Animals

By

Steven L. Marks

, BVSc, MS, MRCVS, DACVIM (SAIM), North Carolina State College of Veterinary Medicine;


Allison Kendall

, DVM, MS, DACVIM, North Carolina State University

Last full review/revision Sep 2019 | Content last modified Oct 2019
Topic Resources

Acute blood loss can lead to shock and even death if >30%–40% of blood is lost and the hypovolemia that develops is not treated aggressively with IV fluids or compatible blood Blood Transfusions in Animals Frequently, the need for blood transfusions is acute, as in acute hemolysis or hemorrhage; transfusions are also appropriate in treatment of acute or chronic anemias. Animals with hemostatic... read more , or both. Causes of acute loss can be known (eg, trauma, surgery) or occult (eg, GI blood loss). Coagulopathies, bleeding tumors, gastric ulceration, and external or internal parasites should be excluded as causes. GI parasites, such as Haemonchus in ruminants and hookworms in dogs, can lead to severe blood loss, especially in young animals. Low-grade, chronic blood loss eventually results in iron-deficiency anemia, although some degree of reticulocytosis may persist even after iron stores become depleted. The hallmark of an iron-deficiency anemia is microcytic, hypochromic anemia. This chronic blood loss can be due to some type of parasitism in young animals (eg, fleas, lice, intestinal parasitism), but in older animals, bleeding from GI ulcers or tumors is more common.

For More Information

Others also read
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Test your knowledge
Circulatory
In all animals, congenital heart defects can cause abnormal shunting of blood. Left-to-right shunts cause blood to be recirculated through the pulmonary vessels and can result in chamber dilatation. Right-to-left shunts cause blood to bypass the pulmonary vessels and can cause cyanosis. Which of the following conditions is most likely to result in a right-to-left heart shunt?
Become a Pro at using our website 

Also of Interest

Become a Pro at using our website 
TOP