BLUEPRINT & STUDY GUIDE
Applied Pathophysiology - Concordia St. Paul
Pass the Exam with Confidence
➢ This Patho final is comprehensive with a high focus on modules
10-14.
➢ The test will have multiple choice, select all that apply, matching,
true/false, and sequence questions.
➢ See below for an explanation of the aptitude level of each
question.
➢ We wish you luck!
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NUR 376 Exam #4 [Final] Blueprint by Rhaeven Ortiz
This Patho final is comprehensive with a high focus on modules 10-14. The test will have multiple choice, select all that apply,
matching, true/false, and sequence questions. See below for an explanation of the aptitude level of each question. We wish you
luck!
M Learning Objective Topic B #
o l ?
d o s
o
m
Module 1 Immunity, Infection & Inflammation
CH 9, 10, 11
1 Differentiate between Immunodeficiency R 1
immunocompetence e
and Immunocompetence, immunosuppression, and immunodeficiency are distinct concepts m
immunosuppression related to the immune system’s function. e
m
● Immunocompetence refers to the immune system’s ability to recognize and
b
respond effectively to pathogens, maintaining normal defense mechanisms.
e
● Immunosuppression occurs when the immune response is intentionally or
r
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unintentionally reduced, such as due to medications (e.g., corticosteroids,
chemotherapy) or diseases (e.g., HIV).
● Immunodeficiency is a state where the immune system is unable to mount an
adequate response, either due to genetic conditions (primary immunodeficiency)
or acquired factors (secondary immunodeficiency).
1 Identify four types Transfusion Reaction U 1
/ of hypersensitivity n
1 reactions. Hypersensitivity reactions are exaggerated immune responses that can cause tissue d
3 damage. They are classified into four types: e
r
1. Type I (Immediate Hypersensitivity) – Mediated by IgE antibodies, this reaction
s
occurs rapidly after exposure to an allergen (e.g., anaphylaxis, allergic rhinitis).
t
2. Type II (Cytotoxic Hypersensitivity) – Involves IgG or IgM antibodies attacking
a
specific cells, leading to cell destruction (e.g., transfusion reaction, hemolytic
n
disease of the newborn).
d
3. Type III (Immune Complex Hypersensitivity) – Immune complexes deposit in
tissues, causing inflammation and damage (e.g., rheumatoid arthritis, systemic
lupus erythematosus).
4. Type IV (Delayed Hypersensitivity) – T-cell-mediated response that occurs
over time, rather than immediately (e.g., contact dermatitis, tuberculosis skin test).
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Transfusion Reaction (Type II Hypersensitivity)
A transfusion reaction occurs when a patient receives incompatible blood, leading to an
immune-mediated attack on transfused red blood cells (RBCs). This is a classic example of
Type II (Cytotoxic) Hypersensitivity, where antibodies (IgG or IgM) target antigens on
the RBCs, triggering their destruction.
Mechanism of Transfusion Reaction
1. Antigen-Antibody Interaction
○ The recipient’s immune system recognizes incompatible donor RBC
antigens as foreign.
○ Pre-existing antibodies bind to these RBCs, leading to activation of the
complement system.
2. Hemolysis and Tissue Damage
○ Complement activation results in hemolysis (destruction of RBCs),
either intravascularly (inside blood vessels) or extravascularly (in the
spleen and liver).
○ This releases hemoglobin into the bloodstream, which can damage the
kidneys.
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3. Inflammatory Response
○ Cytokines and inflammatory mediators cause fever, chills, low blood
pressure, and shock in severe cases.
Types of Transfusion Reactions
1. Acute Hemolytic Reaction (most severe)
○ Caused by ABO incompatibility (e.g., giving type A blood to a type B
recipient).
○ Symptoms: Fever, chills, flank pain, dark urine, low blood pressure, and
potential kidney failure.
2. Delayed Hemolytic Reaction
○ Occurs days to weeks after transfusion due to low levels of pre-existing
antibodies or new antibody development.
○ Milder symptoms include low-grade fever, jaundice, and decreased
hemoglobin levels.
3. Febrile Non-Hemolytic Reaction
○ Caused by recipient antibodies reacting to donor white blood cells
(WBCs) in the transfused blood.
○ Symptoms: Fever and chills but no hemolysis.
4. Allergic Reaction
○ Caused by recipient hypersensitivity to donor plasma proteins.
○ Symptoms: Itching, rash, hives, and in severe cases, anaphylaxis.
Prevention and Management
● Blood Type Matching: Ensuring compatibility through ABO and Rh typing before
transfusion.
● Crossmatching: Testing recipient serum against donor RBCs to detect potential
reactions.
● Monitoring: Watching for signs of reaction during and after transfusion.
● Immediate Discontinuation: Stopping the transfusion if a reaction occurs and
providing supportive treatment (e.g., IV fluids, antihistamines, corticosteroids, or
oxygen).
Conclusion
A transfusion reaction is a serious immune response that can lead to severe
complications if not managed properly. Understanding the types, mechanisms, and
prevention strategies helps ensure patient safety in transfusion therapy.
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