Anemias em caes

Acta Scientiae Veterinariae. 35(Supl 2): s264-s266, 2007.
ISSN 1678-0345 (Print)
ISSN 1679-9216 (Online)

Anemia hemolítica em cães e gatos
Hemolytic anemia in dogs and cats
Rafael Almeida Fighera
Doutorando, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria (UFSM),
Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, UFSM, Santa Maria, RS/Brasil.
E-mail: [e-mail]

ABSTRACT
Hemolytic anemia is the reduction in the numbers of an individual’s red blood cells (RBCs) due to shortening of the life span of these cells. There are several hemolytic disorders caused by infectious agents in dogs and cats, namely babesiosis, rangeliosis, trypanosomiasis, cytauxzoonosis, hemobartonellosis, dirofilariasis and hemolytic anemia associated with the infection by the feline leukemia virus. Noninfectious disorders include immune mediate hemolytic anemia, hemolytic anemias caused by oxidative agents, microangiopathic hemolytic anemia, hemolytic anemias caused by inherited metabolic defects and inherited anomalies of the RBCs membrane. Hematological findings include hypochromic macrocytic anemia with signs of excessive regeneration. Changes in RBCs morphology are frequent and related to the etiopathogenesis of the process. The necropsy findings in dogs and cats that die due to hemolytic crisis include a wide spectrum of changes that make the diagnosis of this condition relatively easy; however, the definite accurate and specific diagnosis of each clinicopathological entity or precipitating disease is only achieved by the combined efforts among practitioners, clinical pathologists and pathologists.
Key words: hemolytic anemia, clinical pathology, hematology, hematopathology, diseases of dogs and cats.

INTRODUÇÃO
A anemia hemolítica consiste na diminuição da quantidade de eritrócitos, e conseqüentemente no decréscimo da concentração de hemoglobina, que ocorre por uma queda na vida média