Which of the following are recognized types of transfusion reactions?

The recognition of different types of transfusion reactions is crucial for patient safety and effective management. The correct answer includes hemolytic, febrile, and allergic transfusion reactions, which are well-documented and commonly encountered in clinical settings.

Hemolytic reactions occur when the immune system attacks the red blood cells from transfused blood due to blood type incompatibility. This is a serious reaction that can lead to acute renal failure, shock, and even death if not managed promptly.

Febrile reactions arise from the recipient's immune system responding to the white blood cells in the transfused blood, leading to fever and chills. This kind of reaction is generally less severe and is often managed with antipyretics.

Allergic reactions can occur due to sensitivity to proteins in the transfused blood products. Symptoms can vary from mild (such as hives) to severe (like anaphylaxis), but typically, allergic reactions are less severe than hemolytic ones.

The other options listed contain types of reactions that are not standard classifications recognized in transfusion medicine. Cardiac and neurogenic responses are not specific transfusion reactions but rather possible complications that may arise due to underlying conditions or other factors during a transfusion. Bacterial reactions can occur,