Definition of Hemolytic Transfusion Reaction
A hemolytic transfusion reaction (HTR) is an adverse reaction to a blood transfusion that occurs when a patient's immune system attacks and destroys donated blood cells. This reaction can be caused by a mismatch between the donor's blood type and the recipient's blood type, as well as by other factors.
Clinical Signs and Symptoms of HTR
The signs and symptoms of a hemolytic transfusion reaction can vary depending on the severity of the reaction. Common signs and symptoms include fever, chills, back or abdominal pain, nausea, vomiting, rapid heart rate, and low blood pressure. In more severe cases, the patient may experience difficulty breathing, chest pain, dark-colored urine, and jaundice.
Diagnosis of HTR
The diagnosis of a hemolytic transfusion reaction can be made by performing a series of tests to detect the presence of antibodies in the patient's blood. These tests may include a direct antiglobulin test, a Coombs test, and a hemolytic panel.
Treatment of HTR
Treatment for hemolytic transfusion reactions usually involves the discontinuation of the transfusion and the administration of supportive care. Depending on the severity of the reaction, the patient may require intravenous fluids and medications to treat any symptoms that may have developed. In some cases, steroids or other immunosuppressant medications may be used to reduce the patient's immune response.