Evans syndrome was first described by Evans and colleagues more than 60 years ago as a disorder of ITP and AIHA in the absence of known underlying systemic disease22 Although the definition of Evans syndrome for many past studies had been restricted to RBC and platelet destruction the diagnosis can be any combination of ITP. A severe thrombocytopenia is consistent with Evans syndrome where the platelets are also targeted by the immune system.
Disorders of the immune system like Evans syndrome occur when the immune system produces antibodies that mistakenly attack healthy tissue specifically red blood cells platelets and white blood cells.
Evans syndrome dogs. Evans syndrome is a complex autoimmune disease where the immune system attacks and destroys a dogs red blood cells and platelets. This abnormal immune response can be either primary no known cause or secondary. Most dogs with this disease fall under the primary category.
Has your dog been diagnosed with Evans Syndrome. Evans Syndrome - Veterinary Specialty Center. Evans syndrome is a particularly serious and sometimes life-threatening immune-mediatedauto-immune condition in which the immune system attacks and destroys a patients red blood cells AND platelets putting the patient at risk of spontaneous bleeding and profound anemia.
Unfortunately any pet that can get IMHA and IMTP is prone to get Evans syndrome. The pets known to be effected are middle aged female dogs especially Cocker Spaniels German Shepherds Poodles and Old English Sheepdogs. The same as the other immune mediated blood disorders it can happen at any age any sex and any breed.
Hi thanks for your email. Im sorry to hear about your dog. You question was what is Evans Syndrome.
Evans Syndrome refers to a condition in which the following two conditions exist at the same time Immune mediated thrombocytopenia ITP and Immune mediated hemolytic anemia IMHA. Evans disease in dogs results when the animal develops two distinct blood diseases at the same time. Also know as Evans syndrome the disorders involved are immune-mediated hemolytic anemia and immune-mediated thrombocytopenia.
Since these are immune disorders your pets body is attacking itself. Immune mediated means that the immune system is doing it - but there is an underlying trigger. - Certain medications and antibiotics have been associated with this - Tick borne disease - Cancer - Infections or inflammation within the body - Very recent vaccinations Unfortunately both IMHA and Evans IMHA and ITP are both terrible diseases to diagnose and.
Evans Syndrome When both immune medeiated thrombocytopenia IMTP and autoimmune haemolytic anaemia AIHA occur concurrently this is known as Evans syndrome. The treatment protocol for Evans Syndrome is the same as IMTP or AIHA but often the survival rate is lower. The dog has not one but two separate life threatening conditions to overcome.
Evans syndrome is an autoimmune condition that presents with two or more cytopenias which commonly includes autoimmune hemolytic anemia AIHA and immune thrombocytopenia ITP with or without immune neutropenia only in 15 of cases according to a report. Coal wasnt improving and I now have just enough information about this auto immune crap to be dangerous. I called the vet and brought her in and her RCV is down to 20.
So now we are looking at a double whammy that goes by the name Evans Syndrome. The started her on Cyclosporine and she is still on the Pred. She is taking pepcid for her tummy.
I wish I could stop crying but at. Evans Syndrome is an autoimmune disease where the body attacks and destroys its own red blood cells AND platelets. It can happen in people as well as dogs.
I dont know about cats. From my reading and experience average mortality. Thrombocytopenia is the most common acquired hemostatic disorder in dogs and immune mediated thrombocytopenia ITP is the most common cause of severe thrombocytopenia.
In one study 9 of 268 dogs with decreased platelet counts were diagnosed as having either primary ITP or Evans syndrome ITP and immune-mediated hemolytic anemia. A severe thrombocytopenia is consistent with Evans syndrome where the platelets are also targeted by the immune system. Serum biochemistry is usually normal or shows changes secondary to dehydration andor tissue hypoxia.
Increased liver enzymes are common due to liver hypoxia but other hepatopathies must be excluded. It is not uncommon to see dogs that have platelet destruction immune mediated thrombocytopeniaITP along with the red cell destruction or even on its own. The two diseases in combination is termed Evans Syndrome.
Cocker Spaniels and Old English Sheep dogs especially females seem to be at an increased risk for developing this syndrome. Evans syndrome is the combined immune mediated destruction of red blood cells and platelets What causes IMHA. The causes of IMHA are still not well understood.
IMHA can result from a primary immune system problem or result secondary to some other condition. Primary IMHA is associated with certain breeds. What causes evans syndrome in dogs.
Evans syndrome is caused by an abnormal immune response in which the patients body targets both red blood cells and platelets for destruction. Primary Evans syndrome has no known cause meaning the immune system was not triggered to attack the red cells or platelets for any identifiable. About 20 of dogs with IMTP ITP will also have IMHA.
Treatment is the same as for AIHA IMHA but the survival rate can be lower. However many dogs with Evans Syndrome can achieve remission with prompt recognition and treatment. Treating Evans Syndrome is the same as IMTP or AIHA high dose immunosuppressive drug therapy.
Immune-mediated hemolytic anemia. Treating cats and dogs with a complex disease. In cases of immune-mediated hemolytic anemia flexibility in treatment protocols and anticipation of complications will help improve veterinary patient outcomes.
Good client communication will help prepare owners for the rollercoaster ride that a. Evans syndrome was first described by Evans and colleagues more than 60 years ago as a disorder of ITP and AIHA in the absence of known underlying systemic disease22 Although the definition of Evans syndrome for many past studies had been restricted to RBC and platelet destruction the diagnosis can be any combination of ITP. Trapper a six-year old Labradoodle and his family now know the extensive care needed and how dreadful a disease such as Evans Syndrome an autoimmune disease in dogs can be.
Evans Syndrome is a serious autoimmune disease that involves an inappropriate attack by the bodys immune system on the red blood cells and platelets clotting cells said Dr. Other autoimmune diseases that are recognized in dogs cats and horses include immune-mediated thrombocytopenia VKH Vogt-Koyanagi-Harada ocular disease dogs and Evans syndrome which includes both immune-mediated anemia and immune-mediated thrombocytopenia. Disorders of the immune system like Evans syndrome occur when the immune system produces antibodies that mistakenly attack healthy tissue specifically red blood cells platelets and white blood cells.
Evans syndrome may occur in combination with another disorder as a secondary condition.