ATI RN
ATI Immune System Quizlet Questions
Question 1 of 5
The nurse is admitting a patient to the clinical unit from surgery. Being alert to potential fluid volume alterations, what assessment data will be important for the nurse to monitor to identify early changes in the patient’s postoperative fluid volume (select all that apply)?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
One principal function of the Class I and Class II major histocompatibility complex S proteins is to
Correct Answer: C
Rationale: The correct answer is C because Class I and Class II MHC proteins present antigens to T-cell receptors for immune response activation. Class I MHC presents endogenous antigens to CD8+ T cells, while Class II MHC presents exogenous antigens to CD4+ T cells. Choice A is incorrect because MHC proteins do not transduce signals. Choice B is incorrect because MHC proteins do not mediate immunoglobulin class switching. Choice D is incorrect because MHC proteins do not directly stimulate interleukin production.
Question 3 of 5
All of the following are true EXCEPT
Correct Answer: C
Rationale: The correct answer is C because an antigenic determinant is not a paratope, but an epitope. Epitope is a small portion of a macromolecule that is recognized by antibodies. Variable region domains of antibodies contain the antigen recognition site. The class of an immunoglobulin is indeed determined by its heavy chain. Therefore, C is the only statement that is not true.
Question 4 of 5
When the clinic nurse starts to take the "air cast" off the grade 2 sprain, the patient asks why it is being removed since he still has pain. Which explanation is best?
Correct Answer: C
Rationale: The correct answer is C because long-term immobilization can indeed cause permanent disability in the case of a grade 2 sprain. Prolonged immobilization can lead to muscle atrophy, joint stiffness, and decreased range of motion, which can result in long-term disability. Choice A is incorrect because adequate circulation is more related to prolonged immobilization, not short-term removal for evaluation. Choice B is incorrect as edema is a short-term concern and not a direct result of long-term immobilization. Choice D is incorrect as there is no indication that a heavier cast will be used.
Question 5 of 5
The nurse is performing an assessment on the patient who is in bilateral Buck traction. Which finding indicates the need to reposition the patient?
Correct Answer: C
Rationale: The correct answer is C because if the patient's feet are against the footboard in Buck traction, it can cause pressure ulcers and compromise circulation. Repositioning the patient is necessary to ensure proper alignment and prevent complications. Incorrect choices: A: The patient's heels not touching the mattress can be due to the traction pulling the legs in a specific position. B: Rewrapping the elastic bandages may be necessary for proper traction maintenance but doesn't indicate immediate need for repositioning. D: The weights hanging free is a normal finding in Buck traction and indicates proper traction application.