What is a typical symptom of a hemolytic reaction during a transfusion?

In a hemolytic reaction during a transfusion, the breakdown of red blood cells leads to several characteristic symptoms, including abdominal or back pain, which is often reported by the patient. This pain results from the release of inflammatory mediators and the activation of the immune response as the body reacts to the foreign blood cells.

Additionally, it is not uncommon for patients experiencing a hemolytic reaction to also report palpitations, which can occur due to the body's compensatory mechanisms in response to the stress of the reaction. This combination of abdominal or back pain alongside palpitations effectively highlights the body's response to the incompatible transfusion and aids in distinguishing these symptoms from those of other types of transfusion reactions.