Fever after blood transfusion is considered to be immune reaction, presence of pyrogen, hemolytic reaction, etc., which needs to be clarified as soon as possible and actively treated.
1. Immune reaction: If there are multiple blood transfusions, antibodies to the same kind of white blood cells may be produced in the body, and the transfusion will produce an immune reaction causing fever.
2. Pyrogen: Bacteria, proteins, interleukins and other substances present in blood or transfusion equipment may act as exogenous pyrogens in the body during transfusion and cause fever.
3. Hemolytic reaction: Hemolytic reaction will occur if the transfused blood is too cold, too hot or the blood type is not compatible, which will be manifested as fever, respiratory difficulty and other symptoms.
Therefore, it is necessary to pay attention to the fever after blood transfusion, find out the cause of the disease as soon as possible and standardize the treatment to promote the improvement of the symptoms.