Nokea
The activation of B cells in humoral immunity is assisted by which of the following?
- A. Cytotoxic T cells
- B. Suppressor T cells
- C. Helper T cells
- D. Neutrophils
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.
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A surgical intervention that can cause substantial remission of myasthenia gravis is:
- A. Esophagostomy
- B. Thymectomy
- C. Myomectomy
- D. Spleenectomy
Correct Answer: B
Rationale: The correct answer is B: Thymectomy. The thymus gland is often found to be abnormal in individuals with myasthenia gravis, and removing it through thymectomy can lead to substantial remission of symptoms. This is because the thymus plays a role in the development of the immune system and may be producing antibodies that attack neuromuscular junctions in myasthenia gravis.
Choice A, esophagostomy, is a surgical procedure to create an opening in the esophagus for feeding and has no direct impact on myasthenia gravis. Choice C, myomectomy, is the removal of uterine fibroids and is unrelated to myasthenia gravis. Choice D, spleenectomy, is the removal of the spleen and is not a treatment for myasthenia gravis as the spleen is not implicated in the disease process.
A nurse is conducting a health history interview for a woman at an assisted-living facility. The woman says, “I have been so constipated lately.” How should the nurse respond?
- A. “Do you have a family history of chest problems?”
- B. “Why don’t you use a laxative every night?”
- C. “Do you take anything to help your constipation?”
- D. “Everyone who ages has bowel problems.”
Correct Answer: C
Rationale: The correct answer is C. The nurse should respond by asking, “Do you take anything to help your constipation?” This response shows active listening and gathers more information about the woman’s current management of constipation. It allows the nurse to assess the woman's current treatment regimen and potential underlying causes.
Choice A is incorrect as it diverts the conversation to chest problems, which is unrelated to the woman's primary concern of constipation. Choice B is incorrect as it suggests a potentially harmful solution without assessing the woman's current treatment or determining the cause of her constipation. Choice D is incorrect as it generalizes bowel problems with aging without addressing the woman's specific issue or management.
The nurse is using critical thinking skills during the first phase of the nursing process. Which action indicates the nurse is in the first phase?
- A. Completes a comprehensive database
- B. Identifies pertinent nursing diagnoses
- C. Intervenes based on priorities of patient care
- D. Determines whether outcomes have been achieved
Correct Answer: A
Rationale: The correct answer is A: Completes a comprehensive database. During the first phase of the nursing process (assessment), the nurse collects data to establish a comprehensive database of the patient's health status. This information serves as the foundation for identifying nursing diagnoses, planning interventions, and evaluating outcomes. Identifying nursing diagnoses (B) occurs in the second phase (diagnosis), intervening based on priorities (C) in the third phase (planning), and determining outcomes achieved (D) in the fourth phase (evaluation). Completing a comprehensive database is crucial in the initial assessment phase to gather accurate information for the subsequent steps in the nursing process.
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?
- A. Potassium-rich food
- B. Liquid nutritional supplements
- C. Raw fruits and vegetables
- D. Frozen products
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.
Mr. Boy, a 65-year old man, has been admitted wth severe flame burns resulting from smoking in bed. The nurse can expect his room environment to include:
- A. strict isolation techniques and policies
- B. a semi-private room
- C. liberal, unrestricted visiting
- D. equipment shared between Mr. Boy and the other burn patients in the unit
Correct Answer: B
Rationale: The correct answer is B: a semi-private room. For a burn patient like Mr. Boy, a semi-private room is preferred to provide a more controlled environment for infection prevention, wound care, and privacy. Strict isolation (A) is not necessary as his burns are not infectious. Liberal visiting (C) can increase the risk of infection and compromise his recovery. Sharing equipment (D) can lead to cross-contamination and is not recommended for burn patients. In summary, a semi-private room balances infection control and patient comfort for burn patients.