{"id":35813,"date":"2024-06-05T12:28:59","date_gmt":"2024-06-05T10:28:59","guid":{"rendered":"https:\/\/petsvetcheck.de\/krankheiten-und-stoerungen\/hund\/haemolytische-transfusionsreaktion-htr-blut-transfusionsreaktion\/"},"modified":"2026-10-15T14:52:09","modified_gmt":"2026-10-15T12:52:09","slug":"hemolytic-transfusion-reaction-htr-blood-transfusion-reaction","status":"publish","type":"krankheit","link":"https:\/\/petsvetcheck.de\/en\/diseases-and-disorders\/dog\/hemolytic-transfusion-reaction-htr-blood-transfusion-reaction\/","title":{"rendered":"Red Blood Cell Destruction After a Transfusion in Dogs (Hemolytic Transfusion Reaction, HTR)"},"content":{"rendered":"","protected":false},"featured_media":0,"template":"","krankheitsort":[143],"haufigkeit":[135],"organsystem_krankheiten":[224,239],"class_list":["post-35813","krankheit","type-krankheit","status-publish","hentry","krankheitsort-general-whole-body","haufigkeit-c-en","organsystem_krankheiten-blood","organsystem_krankheiten-general-full-body","entry"],"acf":{"synonyme":"","synonyme_en":"Blood Transfusion Reaction","titel_en":"Hemolytic Transfusion Reaction (HTR)","weitere_suchbegriffe":"","triage":"red","triage_begruendung":"Incompatible blood transfusion; stop immediately and treat shock.","definition":"A hemolytic transfusion reaction (HTR) in dogs is an immune-mediated reaction that occurs when a dog receives incompatible blood. This reaction leads to the destruction of the transfused red blood cells and can be life-threatening. ","ursachen":"A hemolytic transfusion reaction occurs when the recipient dog\u2019s immune system recognizes the red blood cells from the transfused donation as foreign and attacks them. This typically happens due to incompatibilities between the donor\u2019s and recipient\u2019s blood types. \n\nDogs have different blood group systems, with Dog Erythrocyte Antigen (DEA) being the best known. The best-known types are DEA 1.1, DEA 1.2, and DEA 7. DEA 1.1 is the main factor involved in transfusion reactions. Dogs that are DEA 1.1-negative develop an antibody when they receive DEA 1.1-positive blood, which can lead to future reactions. \n\nThe causes of HTR are usually due to the administration of incompatible blood. This can happen if proper blood type matching is not performed or if there are errors in blood typing. An incomplete or inaccurate transfusion history can also increase the risk of HTR. ","auswahl_symptome_rot":[34178,34149,33332,33408,34314,34049],"auswahl_symptome_blau":[33743,34301,34024,33218,34273],"auswahl_symptome_grun":[33946,33890],"erganzungen_zu_symptomen":"The symptoms of a hemolytic transfusion reaction can occur immediately during or after the transfusion. The most common signs include Fever, shivering, Restlessness, and Vomiting. These reactions can sometimes be subtle and may be overlooked if not closely monitored. \n\nMore severe symptoms include hemolytic anemia, which shows up as pale mucous membranes, rapid breathing, and palpitations. In severe cases, jaundice, blood in the urine (hemoglobinuria), and collapse can occur. These signs indicate massive destruction of red blood cells. \n\nIn rare cases, shock and Death can occur if the reaction is rapid and severe. Therefore, it is important to perform close monitoring during a blood transfusion to be able to react immediately to any signs of a reaction. ","zusammenfassung":"A hemolytic transfusion reaction in dogs occurs when the recipient\u2019s immune system recognizes the red blood cells from the blood donation as foreign and attacks them. This usually happens due to incompatibilities between the donor\u2019s and recipient\u2019s blood types, especially DEA 1.1. Symptoms such as Fever, Vomiting, and weakness are common, while more severe reactions can lead to Cardiovascular collapse. For diagnosis, an accurate medical history and specific blood tests are required to confirm hemolytic anemia. Treatment includes stopping the transfusion immediately, fluid therapy, and possibly medications to suppress the immune response. The prognosis depends on the severity of the reaction and how quickly treatment is started. prevention requires thorough blood typing and crossmatching to minimize the risk of incompatible transfusions. Research focuses on improving blood transfusion safety and developing alternative solutions such as synthetic blood products. Long-term goals also include genetic modification of donor cells and the development of universal donor blood. Advances in blood banking technology could also improve the stability and safety of canine blood transfusions. Educating veterinarians and pet owners about the risks and precautions is also an important aspect of research. ","diagnose":"The diagnosis of a hemolytic transfusion reaction is based on clinical observation and the dog\u2019s medical history, as well as specific diagnostic tests. An accurate medical history, including all previous transfusions and identified blood types, is crucial. \n\nBlood tests are important to confirm hemolytic anemia. These include a complete blood count that measures red blood cell count, hematocrit, and hemoglobin. In addition, bilirubin tests may be performed to confirm jaundice. \n\nA Coombs test can help detect the presence of an antibody against red blood cells. Combined with blood typing and crossmatching, this can help identify the cause of the reaction and prevent future incidents. ","behandlung":"The treatment of a hemolytic transfusion reaction requires immediate measures to stabilize the dog's condition. The first step is to immediately stop the transfusion. The dog should remain in a monitored environment where vital parameters such as heart rate, respiration, and temperature are closely monitored. \n\nIntensive fluid therapy may be necessary to stabilize blood pressure and support circulation. Medications such as antihistamines and corticosteroids may be given to suppress the immune response and reduce Inflammatory conditions. In severe cases, oxygen therapy may be required. \n\nIf severe anemia develops, another transfusion may be necessary\u2014but only after thorough blood typing and crossmatching to ensure the new blood is compatible. Close follow-up care is essential to prevent symptoms from recurring and to monitor recovery. ","prognose":"The prognosis for a hemolytic transfusion reaction depends on the severity of the reaction and how quickly treatment is started. Mild reactions that are recognized and treated quickly usually have a good prognosis. Most dogs recover fully if treatment is provided in time. \n\nMore serious reactions\u2014especially those that lead to shock\u2014can have a poorer prognosis. In these cases, the chance of survival depends on the veterinarian\u2019s ability to quickly control symptoms and treat the underlying cause. \n\nLong-term complications are rare but can occur with repeated reactions. Careful monitoring and follow-up care are important to ensure that the dog does not suffer permanent damage. ","ausblick_auf_aktuelle_forschung":"A hemolytic transfusion reaction (HTR) in dogs is a serious medical problem that occurs when a dog receives a blood transfusion that is not compatible. Research in this field focuses on minimizing the risk of such reactions and improving the safety of blood transfusions. A key focus is identifying and classifying the different blood types in dogs. While the ABO system is well known in humans, dogs have multiple blood group systems, with the DEA (Dog Erythrocyte Antigen) system being the most commonly studied. \n\nCurrent studies aim to deepen understanding of the genetic basis of these blood types. By sequencing the genomes of different dog breeds, researchers are trying to identify the genetic markers responsible for blood types. In the future, this could enable the development of tests that are faster and more accurate than the methods currently available. \n\nAnother area of research is the development of synthetic blood products or alternatives to blood transfusions to reduce the need for donor blood and the risk of reactions. Such products could be invaluable in emergency situations, especially when compatible donor blood is not immediately available. \n\nIn addition, researchers are investigating the immune response in dogs that have received a transfusion to better understand how and why HTR occurs. The role of an antibody in triggering these reactions is of particular interest, as it could help develop prevention strategies. Researchers are also exploring how to modulate or suppress the immune system in dogs to reduce the likelihood of HTR. \n\nIn the long term, these research efforts could lead to innovative approaches, such as the genetic modification of donor cells or the development of universal donor blood that is compatible for all dogs. These advances would have the potential to decisively improve the treatment of dogs with severe Blood loss or anemia. \n\nAnother important aspect of research is the improvement of blood banking technologies and the storage of dog blood. The stability and shelf life of stored blood can significantly affect the safety and effectiveness of transfusions. Researchers are working on new methods for preserving blood that preserve its properties over longer periods of time. \n\nFinally, research is also investigating how to improve the education and training of veterinarians and pet owners to raise awareness of the risks of HTR and ensure that appropriate precautions are taken. This includes the development of guidelines for the safe conduct of blood transfusions and the implementation of monitoring and reporting systems for transfusion reactions. \n\nIn summary, research on hemolytic transfusion reaction in dogs is heading in many directions, all of which aim to improve the safety and effectiveness of blood transfusions and optimize the health care of dogs overall. Advances in this area could not only save the lives of dogs, but also lead to new insights that are transferable to other animal species or even humans. ","zusatzlicher_inhalt_im_hauptteil":"prevention of hemolytic transfusion reactions begins with thorough blood typing of both the donor and recipient dog. Careful matching of blood types can significantly reduce the risk of incompatible transfusions. \n\nA cross-match should be performed before each transfusion. This is a test in which the donor's blood is mixed with that of the recipient to ensure that no unexpected reactions occur. This measure is especially important in dogs that have already received transfusions and may be sensitized. \n\nCareful monitoring during the transfusion is essential. By observing vital parameters and recognizing signs of a reaction, a transfusion can be stopped quickly before a severe reaction occurs. \n\nEducating and training veterinary staff on the importance of blood types, crossmatches, and monitoring protocols is crucial to reduce the frequency and severity of transfusion reactions.","haufig_gestellte_fragen_faqs":"
    \n \t
  1. What is a hemolytic transfusion reaction in dogs?<\/b> A hemolytic transfusion reaction in dogs occurs when a dog\u2019s immune system recognizes the transfused blood as foreign and attacks it. This leads to the destruction of the donor blood\u2019s red blood cells, which can cause serious health complications. <\/li>\n \t
  2. What symptoms can occur with HTR?<\/b> Symptoms of a hemolytic transfusion reaction include Fever, rapid heartbeat, shortness of breath, pale or yellowish mucous membranes, blood in the urine, and a general collapse of health. These signs may occur shortly after the transfusion or be delayed. <\/li>\n \t
  3. How is HTR diagnosed?<\/b> The diagnosis is based on clinical observation of symptoms after a blood transfusion, as well as blood tests that show destruction of red blood cells and an immune response. A direct Coombs test can also be performed to detect an antibody against red blood cells. <\/li>\n \t
  4. How can the risk of HTR be minimized?<\/b> The risk can be minimized through careful blood typing and crossmatching before the transfusion. It is important to use compatible donor blood and to monitor the dog closely during and after the transfusion to respond early to possible reactions. <\/li>\n \t
  5. What blood types do dogs have?<\/b> Dogs have several blood group systems, with the DEA (Dog Erythrocyte Antigen) system being the best known. Important DEA types are DEA 1.1, DEA 1.2, and DEA 4; DEA 1.1 in particular is considered highly immunogenic and must be carefully taken into account. <\/li>\n \t
  6. Can all dogs donate blood?<\/b> Not all dogs are suitable blood donors. An ideal donor dog is healthy, meets a minimum weight (often over 25 kg), is good-natured, and has no history of blood transfusions. The dog should also be regularly tested for infectious diseases. <\/li>\n \t
  7. How is the blood of a donor dog tested?<\/b> A donor dog\u2019s blood is checked for blood type, infectious diseases, and general health screening. The blood type must be compatible with the recipient dog\u2019s blood type to minimize the risk of HTR. <\/li>\n \t
  8. What are the long-term consequences of HTR?<\/b> Long-term consequences of a severe hemolytic transfusion reaction can be kidney damage, liver problems, and a permanent susceptibility to anemia. In severe cases, HTR can be fatal if not treated quickly and effectively. <\/li>\n \t
  9. Are there alternatives to blood transfusions in dogs?<\/b> Alternatives to blood transfusions are limited, but research is being conducted on synthetic blood products. Current approaches include the use of volume replacement agents that support blood pressure, although they do not improve the oxygen transport capacity of the blood. <\/li>\n \t
  10. How should a dog be monitored after receiving a blood transfusion?<\/b> After a blood transfusion, a dog should be closely monitored for signs of a transfusion reaction. These include Fever, changes in heart rate, shortness of breath, and Behavioral changes. Regular check-ups of the blood and vital signs are crucial to detect and treat complications early. <\/li>\n<\/ol>","literaturangaben":"
      \n \t
    • Davidow, E. B., Blois, S. L., Goy-Thollot, I., Harris, L., Humm, K., Musulin, S., Nash, K. J., Odunayo, A., Sharp, C. R., Spada, E., Thomason, J., Walton, J., & Wardrop, K. J. (2021). Association of Veterinary Hematology and Transfusion Medicine (AVHTM) Transfusion Reaction Small Animal Consensus Statement (TRACS). Part 1: Definitions and clinical signs. Journal of Veterinary Emergency and Critical Care, 31(2), 141\u2013166. https:\/\/doi.org\/10.1111\/vec.13044<\/li>\n \t
    • Davidow, E. B., Blois, S. L., Goy-Thollot, I., Harris, L., Humm, K., Musulin, S., Nash, K. J., Odunayo, A., Sharp, C. R., Spada, E., Thomason, J., Walton, J., & Wardrop, K. J. (2021). Association of Veterinary Hematology and Transfusion Medicine (AVHTM) Transfusion Reaction Small Animal Consensus Statement (TRACS). Part 2: Prevention and monitoring. Journal of Veterinary Emergency and Critical Care, 31(2), 167\u2013188. https:\/\/doi.org\/10.1111\/vec.13045<\/li>\n \t
    • Odunayo, A., Nash, K. J., Davidow, E. B., Blois, S. L., Goy-Thollot, I., Harris, L., Humm, K., Musulin, S., Sharp, C. R., Spada, E., Thomason, J., Walton, J., & Wardrop, K. J. (2021). Association of Veterinary Hematology and Transfusion Medicine (AVHTM) Transfusion Reaction Small Animal Consensus Statement (TRACS). Part 3: Diagnosis and treatment. Journal of Veterinary Emergency and Critical Care, 31(2), 189\u2013203. https:\/\/doi.org\/10.1111\/vec.13043<\/li>\n \t
    • Hall, G. B. F., Birkbeck, R., Brainard, B. M., & others. (2024). A prospective multicenter observational study assessing incidence and risk factors for acute blood transfusion reactions in dogs. Journal of Veterinary Internal Medicine, 38(5), 2495\u20132506. https:\/\/doi.org\/10.1111\/jvim.17175<\/li>\n \t
    • Callan, M. B., Jones, L. T., & Giger, U. (1995). Hemolytic transfusion reactions in a dog with an alloantibody to a common antigen. Journal of Veterinary Internal Medicine, 9(4), 277\u2013279. https:\/\/doi.org\/10.1111\/j.1939-1676.1995.tb01080.x<\/li>\n \t
    • Giger, U., Gelens, C. J., Callan, M. B., & Oakley, D. A. (1995). An acute hemolytic transfusion reaction caused by dog erythrocyte antigen 1.1 incompatibility in a previously sensitized dog. Journal of the American Veterinary Medical Association, 206(9), 1358\u20131362. <\/li>\n \t
    • Patterson, J., Rousseau, A., Kessler, R. J., & Giger, U. (2011). In vitro lysis and acute transfusion reactions with hemolysis caused by inappropriate storage of canine red blood cell products. Journal of Veterinary Internal Medicine, 25(4), 927\u2013933. https:\/\/doi.org\/10.1111\/j.1939-1676.2011.0737.x<\/li>\n \t
    • Holowaychuk, M. K., Leader, J. L., & Monteith, G. (2014). Risk factors for transfusion-associated complications and nonsurvival in dogs receiving packed red blood cell transfusions: 211 cases (2008\u20132011). Journal of the American Veterinary Medical Association, 244(4), 431\u2013437. https:\/\/doi.org\/10.2460\/javma.244.4.431<\/li>\n \t
    • Bruce, J. A., Kriese-Anderson, L., Bruce, A. M., & Pittman, J. R. (2015). Effect of premedication and other factors on the occurrence of acute transfusion reactions in dogs. Journal of Veterinary Emergency and Critical Care, 25(5), 620\u2013630. https:\/\/doi.org\/10.1111\/vec.12327<\/li>\n<\/ul>","symptome_ausgeblendet":"","erganzungen":"","faq":[{"frage":"1. What is a hemolytic transfusion reaction in dogs?","antwort":"A hemolytic transfusion reaction in dogs occurs when a dog's immune system recognizes and attacks transfused blood as foreign. This leads to the destruction of the donor blood's red blood cells, which can cause severe health complications. -"},{"frage":"2. What symptoms can occur with an HTR?","antwort":"Symptoms of a hemolytic transfusion reaction include Fever, rapid heartbeat, difficulty breathing, pale or yellowish mucous membranes, blood in the urine, and a general collapse of health. These signs can appear shortly after the transfusion or be delayed. -"},{"frage":"3. How is an HTR diagnosed?","antwort":"Diagnosis is based on clinical observation of symptoms after a blood transfusion, as well as blood tests that detect the destruction of red blood cells and an immune response. A direct Coombs test can also be performed to detect antibodies against red blood cells. -"},{"frage":"4. How can the risk of an HTR be minimized?","antwort":"The risk can be minimized by careful blood typing and cross-matching before transfusion. It is important to use compatible donor blood and to closely monitor the dog during and after the transfusion to respond promptly to any potential reactions. -"},{"frage":"5. What blood types do dogs have?","antwort":"Dogs have several blood type systems, of which the DEA (Dog Erythrocyte Antigen) system is the best known. Important DEA types include DEA 1.1, DEA 1.2, and DEA 4, with DEA 1.1 being considered highly immunogenic and requiring careful consideration. -"},{"frage":"6. Can all dogs donate blood?","antwort":"Not all dogs are suitable blood donors. An ideal blood donor dog is healthy, has a minimum weight (often over 25 kg), has a good temperament, and has no history of blood transfusions. Additionally, the dog should be regularly tested for infectious diseases. -"},{"frage":"7. How is a donor dog\u2019s blood tested?","antwort":"A donor dog's blood is tested for blood type, infectious diseases, and general health. The blood type must be compatible with the recipient dog's to minimize the risk of an HTR. -"},{"frage":"8. What are the long-term consequences of an HTR?","antwort":"Long-term consequences of a severe hemolytic transfusion reaction can include kidney damage, liver problems, and a permanent susceptibility to anemia. In severe cases, an HTR can be fatal if not treated quickly and effectively. -"},{"frage":"9. Are there alternatives to blood transfusions in dogs?","antwort":"Alternatives to blood transfusions are limited, but research is ongoing into synthetic blood products. Current approaches include the use of volume expanders that support blood pressure, although they do not improve the blood's oxygen-carrying capacity. -"},{"frage":"10. How should a dog be monitored after receiving a blood transfusion?","antwort":"After a blood transfusion, a dog should be closely monitored for signs of a transfusion reaction. These include Fever, changes in heart rate, shortness of breath, and Behavioral changes. Regular follow-up checks of blood values and vital signs are crucial to detect and treat complications early. 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