The nurse knows which of the following is true about immunity?

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Nursing Process NCLEX Questions Questions

Question 1 of 9

The nurse knows which of the following is true about immunity?

Correct Answer: C

Rationale: Rationale for Answer C: Antibodies are produced by the B-cells. B-cells are a type of lymphocyte that differentiate into plasma cells, which are responsible for producing antibodies in response to antigens. This process is a key component of the humoral immune response. Therefore, the statement that antibodies are produced by the B-cells is true. Summary of Incorrect Choices: A: Antibody-mediated defense occurs through the B-cell system, not the T-cell system. T-cells are involved in cell-mediated immunity. B: Cellular immunity is mediated by T-cells, not antibodies produced by B-cells. D: Lymphocytes increasing with an allergic response is not directly related to the production of antibodies by B-cells. Allergic responses involve a different mechanism.

Question 2 of 9

The nurse is caring for a patient with HIV who has diarrhea. Which of the following would be most therapeutic to teach the patient to avoid in the diet to reduce diarrhea?

Correct Answer: C

Rationale: The correct answer is C: Raw fruits and vegetables. Patients with HIV and diarrhea should avoid raw fruits and vegetables due to their high fiber content, which can exacerbate diarrhea symptoms. Fiber can increase bowel movements and worsen diarrhea. Therefore, avoiding raw fruits and vegetables can help reduce diarrhea. Choice A (Potassium-rich food) is not the best answer because potassium-rich foods are important for patients with HIV to maintain electrolyte balance. Choice B (Liquid nutritional supplements) can actually be beneficial in providing essential nutrients to patients with HIV. Choice D (Frozen products) is not directly related to diarrhea management in patients with HIV.

Question 3 of 9

Which of the ff nursing interventions is essential for a client during the Schilling test?

Correct Answer: A

Rationale: The correct answer is A because collecting urine 24-48 hrs after the client has received nonradioactive B12 is essential for the Schilling test to evaluate vitamin B12 absorption. Urine is collected to measure the excretion of radioactive B12, which helps in diagnosing pernicious anemia or malabsorption issues. Incorrect choices: B: Collecting blood samples is not necessary for the Schilling test as it primarily involves urine collection. C: Allowing oral fluid consumption is important to prevent dehydration and is not contraindicated after receiving nonradioactive B12. D: Making the client lie down in the supine position is unnecessary for the Schilling test and may not affect the test results.

Question 4 of 9

The best way to tell whether or not a patient is breathing, is for the nurse to watch the movement of the:

Correct Answer: D

Rationale: The correct answer is D, "Chest and nostrils." This is because observing the movement of the chest and nostrils is the most reliable way to determine if a patient is breathing. The chest rises and falls with each breath, and the nostrils may flare or move as air is inhaled and exhaled. Monitoring these areas provides a direct indication of respiratory effort. Choices A, B, and C are incorrect because they do not directly reflect the act of breathing. Extremities, head, and eyeball movements are not reliable indicators of breathing function.

Question 5 of 9

A client in the terminal stage of cancer is receiving continuous infusion of morphine (Duramorph) for pain management. Which assessment finding suggests that the client is experiencing an adverse effect of this drug?

Correct Answer: B

Rationale: The correct answer is B: Respiratory rate of 8 breaths/min. Morphine is an opioid that can cause respiratory depression as a side effect. A respiratory rate of 8 breaths/min indicates hypoventilation, which is a potential adverse effect of morphine. This is a critical finding that requires immediate intervention to prevent respiratory failure or arrest. A: Voiding of 350mL of concentrated urine in 8 hours is not directly related to morphine's adverse effects. Morphine can cause urinary retention, not increased voiding. C: Irregular heart rate of 82 beats/min is within normal range and not a typical adverse effect of morphine. Morphine can cause bradycardia or tachycardia, but not irregular heart rate specifically. D: Pupils constricted and equal is a common side effect of morphine due to its effect on the central nervous system. This finding does not suggest an adverse effect; it is an expected pharmac

Question 6 of 9

The activation of B cells in humoral immunity is assisted by which of the following?

Correct Answer: C

Rationale: The correct answer is C: Helper T cells. Helper T cells play a crucial role in activating B cells by releasing cytokines that stimulate B cell proliferation and differentiation. They also help in the production of antibodies. Cytotoxic T cells (A) are involved in cell-mediated immunity, not humoral immunity. Suppressor T cells (B) regulate the immune response and do not directly assist in B cell activation. Neutrophils (D) are phagocytic cells involved in innate immunity, not in activating B cells in humoral immunity.

Question 7 of 9

When preparing a site for venipunctures with alcohol, how long must the area be cleaned?

Correct Answer: D

Rationale: The correct answer is D: 60 seconds. This is because the area must be cleaned for at least 60 seconds to effectively disinfect the skin and reduce the risk of infection during venipuncture. Cleaning for shorter durations (5, 10, or 30 seconds) may not be sufficient to achieve proper disinfection. Thoroughly cleaning the area for a full minute ensures that the alcohol has enough time to kill bacteria and pathogens on the skin, making it safer for the venipuncture procedure. Shorter cleaning times may leave pathogens behind, increasing the risk of contamination and infection.

Question 8 of 9

The nurse knows which of the following is true about immunity?

Correct Answer: C

Rationale: Rationale for Answer C: Antibodies are produced by the B-cells. B-cells are a type of lymphocyte that differentiate into plasma cells, which are responsible for producing antibodies in response to antigens. This process is a key component of the humoral immune response. Therefore, the statement that antibodies are produced by the B-cells is true. Summary of Incorrect Choices: A: Antibody-mediated defense occurs through the B-cell system, not the T-cell system. T-cells are involved in cell-mediated immunity. B: Cellular immunity is mediated by T-cells, not antibodies produced by B-cells. D: Lymphocytes increasing with an allergic response is not directly related to the production of antibodies by B-cells. Allergic responses involve a different mechanism.

Question 9 of 9

Mr. Reyes has a possible skull fracture. The nurse should:

Correct Answer: A

Rationale: The correct answer is A because observing for signs of brain injury is crucial in assessing a possible skull fracture. Signs may include altered mental status, headache, nausea, vomiting, and unequal pupil size. Choice B is incorrect as hemorrhaging from the oral cavity may not always be present in skull fractures. Choice C is incorrect as elevating the foot of the bed is not recommended for a possible skull fracture. Choice D is incorrect as decreased intracranial pressure and temperature are not typical symptoms of a skull fracture.

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