Answer to Question 1
Correct Answer: 3
All the patients are demonstrating manifestations of immunodeficiency. Patient A's manifestations are a consistent with immunosuppression from HIV/AIDS. Patient B's manifestations are consistent with SLE. Patient C's manifestations are consistent with AIDS. Patient D's manifestations are consistent with rheumatoid arthritis.
Answer to Question 2
Correct Answer: 4
A hemolytic transfusion reaction to blood of an incompatible type is characteristic of a type II or cytotoxic hypersensitivity reaction. IgG or IgM type antibodies are formed to a cell-bound antigen such as the ABO or Rh antigen. When these antibodies bind with the antigen, the complement cascade is activated, resulting in destruction of the target cell. The other patients are not demonstrating signs of a type II hypersensitivity reaction.