Feline Anemia (General) Study Guide

Overview and Clinical Importance

Anemia is defined as a reduction in packed cell volume (PCV), hematocrit (HCT), hemoglobin concentration, or red blood cell (RBC) count below the species-specific reference range. In cats, anemia is not a diagnosis but rather a clinical sign of an underlying disease process. Understanding the classification, pathophysiology, and diagnostic approach to feline anemia is essential for success on the NAVLE, as it represents a frequently tested topic in the hemic/lymphatic system category.

The majority of anemias in cats are non-regenerative, which differs from dogs where regenerative anemias are more common. This distinction has significant diagnostic and therapeutic implications. Feline red blood cells have a unique lifespan of approximately 70-80 days (compared to 110-120 days in dogs), and cats possess distinctive hemoglobin with eight reactive sulfhydryl groups, making them more susceptible to oxidative damage.

Normal Feline Hematologic Values

Understanding normal reference ranges is essential for identifying anemia and assessing its severity.