NUR 257 Exam 1 Review: (Latest 2026/2027 Update) Hypersensitivity Reactions,
HIV/AIDS, Antiviral Medications, Immunology | Q&A | Grade A | 100% Correct
(Verified Answers)
Nursing Care of Older Adults | Immunology & Infectious Disease Review
SUBJECT COURSE FORMAT
Gerontological Nursing / Immunology / NUR 257 Exam 1 Review Q&A with Rationales
Infectious Disease
Q1
A child is undergoing testing for food allergies after experiencing unexplained signs and symptoms of
hypersensitivity. What food items would the nurse inform the parents are common allergens?
CORRECT ANSWER
Eggs and wheat (also milk, peanuts, tree nuts, soy, fish, shellfish)
R AT I O N A L E
• Eight major food allergens account for 90% of allergic reactions.
Q2
A client has been brought to the emergency department by EMS after being found unresponsive. Rapid
assessment reveals anaphylaxis as a potential cause of the client's condition. The care team should attempt to
assess for what potential causes of anaphylaxis? Select all that apply.
CORRECT ANSWER
Foods, medications, insect stings
R AT I O N A L E
• Common triggers: antibiotics (penicillin), NSAIDs, peanuts, tree nuts, shellfish, bee/wasp stings, latex.
Q3
A client has been living with seasonal allergies for many years, but does not take antihistamines, stating, "when I
was young I used to take antihistamines, but they always put me to sleep." How should the nurse BEST respond?
CORRECT ANSWER
"The newer antihistamines are different than in years past, and cause less sedation."
R AT I O N A L E
• Second-generation antihistamines (loratadine, cetirizine, fexofenadine) are non-sedating.
, Q4
An office worker takes a cookie that contains peanut butter. The worker begins wheezing, with an inspiratory
stridor and air hunger, and the occupational health nurse is called. The nurse should recognize that the worker is
likely suffering from which type of hypersensitivity?
CORRECT ANSWER
Anaphylactic (Type I)
R AT I O N A L E
• Type I: IgE-mediated, immediate (minutes), anaphylaxis, asthma, allergic rhinitis.
Q5
The nurse is providing care for a client who has a diagnosis of hereditary angioedema. When planning this
client's care, what nursing diagnosis should be prioritized?
CORRECT ANSWER
Risk for impaired gas exchange related to airway obstruction
R AT I O N A L E
• Angioedema can cause laryngeal edema → airway obstruction → respiratory failure.
Q6
The nurse is providing care for a client who has experienced a type I hypersensitivity reaction. What client is
having this type of reaction?
CORRECT ANSWER
A child with an anaphylactic reaction after a bee sting
R AT I O N A L E
• Type I reactions are immediate, IgE-mediated, and can be life-threatening (anaphylaxis).
Q7
The nursing student is studying hypersensitivity reactions. Which reactions are correctly matched with their
hypersensitivity types? Select all that apply.
CORRECT ANSWER
Type I - examples include hay fever and anaphylaxis; Type III - immune complex deposits in blood vessel walls; Type
IV - examples are poison ivy and transplant rejection
R AT I O N A L E
• Type I: IgE (allergic). Type II: IgG/IgM (cytotoxic). Type III: immune complex. Type IV: delayed (T-cell mediated).
HIV/AIDS, Antiviral Medications, Immunology | Q&A | Grade A | 100% Correct
(Verified Answers)
Nursing Care of Older Adults | Immunology & Infectious Disease Review
SUBJECT COURSE FORMAT
Gerontological Nursing / Immunology / NUR 257 Exam 1 Review Q&A with Rationales
Infectious Disease
Q1
A child is undergoing testing for food allergies after experiencing unexplained signs and symptoms of
hypersensitivity. What food items would the nurse inform the parents are common allergens?
CORRECT ANSWER
Eggs and wheat (also milk, peanuts, tree nuts, soy, fish, shellfish)
R AT I O N A L E
• Eight major food allergens account for 90% of allergic reactions.
Q2
A client has been brought to the emergency department by EMS after being found unresponsive. Rapid
assessment reveals anaphylaxis as a potential cause of the client's condition. The care team should attempt to
assess for what potential causes of anaphylaxis? Select all that apply.
CORRECT ANSWER
Foods, medications, insect stings
R AT I O N A L E
• Common triggers: antibiotics (penicillin), NSAIDs, peanuts, tree nuts, shellfish, bee/wasp stings, latex.
Q3
A client has been living with seasonal allergies for many years, but does not take antihistamines, stating, "when I
was young I used to take antihistamines, but they always put me to sleep." How should the nurse BEST respond?
CORRECT ANSWER
"The newer antihistamines are different than in years past, and cause less sedation."
R AT I O N A L E
• Second-generation antihistamines (loratadine, cetirizine, fexofenadine) are non-sedating.
, Q4
An office worker takes a cookie that contains peanut butter. The worker begins wheezing, with an inspiratory
stridor and air hunger, and the occupational health nurse is called. The nurse should recognize that the worker is
likely suffering from which type of hypersensitivity?
CORRECT ANSWER
Anaphylactic (Type I)
R AT I O N A L E
• Type I: IgE-mediated, immediate (minutes), anaphylaxis, asthma, allergic rhinitis.
Q5
The nurse is providing care for a client who has a diagnosis of hereditary angioedema. When planning this
client's care, what nursing diagnosis should be prioritized?
CORRECT ANSWER
Risk for impaired gas exchange related to airway obstruction
R AT I O N A L E
• Angioedema can cause laryngeal edema → airway obstruction → respiratory failure.
Q6
The nurse is providing care for a client who has experienced a type I hypersensitivity reaction. What client is
having this type of reaction?
CORRECT ANSWER
A child with an anaphylactic reaction after a bee sting
R AT I O N A L E
• Type I reactions are immediate, IgE-mediated, and can be life-threatening (anaphylaxis).
Q7
The nursing student is studying hypersensitivity reactions. Which reactions are correctly matched with their
hypersensitivity types? Select all that apply.
CORRECT ANSWER
Type I - examples include hay fever and anaphylaxis; Type III - immune complex deposits in blood vessel walls; Type
IV - examples are poison ivy and transplant rejection
R AT I O N A L E
• Type I: IgE (allergic). Type II: IgG/IgM (cytotoxic). Type III: immune complex. Type IV: delayed (T-cell mediated).
