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How are type IV hypersensitivity reactions different from all other types (I, II, or III) of hypersensitivity reactions?
- A. They involve antigen-antibody complexes.
- B. They are mediated by T cells and do not involve antibodies.
- C. They result in immediate allergic reactions.
- D. They are the least severe form of hypersensitivity.
Correct Answer: B
Rationale: Type IV hypersensitivity reactions are mediated by T cells and cytokine release, leading to delayed reactions, unlike types I, II, and III, which involve antibodies. Choice A is incorrect because type IV reactions do not involve antigen-antibody complexes. Choice C is incorrect as type IV reactions do not result in immediate allergic reactions. Choice D is incorrect as type IV reactions are not the least severe form of hypersensitivity; in fact, they are known to cause significant tissue damage and inflammation.
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Which type of lipoprotein is associated with decreasing the risk of atherosclerosis?
- A. High-density lipoprotein (HDL)
- B. Low-density lipoprotein (LDL)
- C. Very low-density lipoprotein (VLDL)
- D. Intermediate-density lipoprotein (IDL)
Correct Answer: A
Rationale: The correct answer is High-density lipoprotein (HDL). HDL is known as 'good' cholesterol because it helps remove cholesterol from the arteries, reducing the risk of atherosclerosis. LDL (choice B) is considered 'bad' cholesterol as it can deposit cholesterol in the arteries, increasing the risk of atherosclerosis. VLDL (choice C) and IDL (choice D) are also associated with increased risk of atherosclerosis rather than decreasing it.
The nurse is preparing a client for surgery who was admitted to the emergency center following a motor vehicle collision. The client has an open fracture of the femur and is bleeding moderately from the bone protrusion site.
- A. Ensure the client is NPO and document the last meal.
- B. Administer pain medication as prescribed.
- C. Apply a sterile dressing to the wound site.
- D. Notify the healthcare provider of the client's medication history.
Correct Answer: D
Rationale: In this scenario, the priority action is to notify the healthcare provider of the client's medication history. This is important because understanding the client's medication history, especially if they are taking anticoagulants or other medications that could affect bleeding and surgery, is crucial in ensuring safe management of the client's condition. Option A, ensuring the client is NPO and documenting the last meal, is important but not the priority in this situation. Administering pain medication (Option B) should only be done after ensuring the client's safety and stability. Applying a sterile dressing (Option C) is also important but not as critical as informing the healthcare provider of the medication history.
What are the clinical manifestations of otitis media?
- A. Earache, wheezing, vomiting
- B. Coughing, rhinorrhea, headache
- C. Fever, irritability, pulling on ear
- D. Wheezing, cough, drainage in ear canal
Correct Answer: C
Rationale: The correct answer is C: Fever, irritability, pulling on the ear. Clinical manifestations of otitis media commonly include fever, irritability, and children may show signs of pulling or rubbing their ears. Choices A, B, and D are incorrect. Choice A includes wheezing and vomiting, which are not typical symptoms of otitis media. Choice B includes coughing, rhinorrhea, and headache, which are more commonly associated with upper respiratory infections rather than otitis media. Choice D includes wheezing, cough, and drainage in the ear canal, which are not typical clinical manifestations of otitis media.
Based on the interpretation of this strip, what action should be implemented first?
- A. Call a code.
- B. Start CPR.
- C. Administer IV fluids.
- D. Apply oxygen.
Correct Answer: A
Rationale: The correct answer is A: 'Call a code.' In the context of ventricular fibrillation (V-Fib), immediate defibrillation is crucial. Calling a code is the first step to activating the emergency response team, including individuals trained to provide defibrillation. Starting CPR (Choice B) may be necessary but should follow defibrillation. Administering IV fluids (Choice C) and applying oxygen (Choice D) are important interventions in cardiac arrest cases, but in V-Fib, the priority is defibrillation to restore normal heart rhythm.
Recurrent abdominal pain (RAP) is most often seen in school-age or adolescent children. The nurse should assess closely for what potential problem?
- A. Physical problems
- B. Relational problems
- C. Eating disorders
- D. Emotional problems
Correct Answer: D
Rationale: The correct answer is D: 'Emotional problems.' Recurrent abdominal pain (RAP) in children is frequently associated with emotional factors rather than physical issues, relational problems, or eating disorders. Children may manifest emotional distress through physical symptoms like abdominal pain, making it crucial for nurses to assess for emotional problems as a potential cause.