Adult Health Nursing Test Bank

Correct Answer: C

Rationale: The correct answer is C: Macrophages. Macrophages are antigen-presenting cells that engulf pathogens and present their antigens to T cells, initiating an immune response. They express major histocompatibility complex (MHC) molecules necessary for T cell recognition. B cells also present antigens but primarily to B cells for antibody production. NK cells are involved in killing infected cells, not antigen presentation. Eosinophils are mainly involved in allergic responses and defense against parasites, not antigen presentation.

Correct Answer: C

Rationale: Step-by-step rationale for the correct answer (C: I and II): 1. Choice I (The expression of pain is affected by learned behavior) is correct because cultural beliefs and upbringing influence how individuals express and perceive pain. 2. Choice II (Physiologically, all individuals experience pain in a similar manner) is correct because pain perception is largely influenced by biological factors that are universal. 3. Choice III (Some Asian people have a high response to pain medications) is incorrect as it focuses on a specific cultural group, which is not a general characteristic emphasized in culturally sensitive care. 4. Choice IV (Patients should be assessed for pain regardless of overt symptomatology) is incorrect as it is not specifically related to cultural sensitivity in pain management.

Correct Answer: C

Rationale: Rationale: C is correct as keeping the ulcer covered with a sterile dressing provides a barrier against pathogens, promoting wound healing and preventing infection. A (topical antibiotics) can lead to resistance and disrupt normal flora. B (daily wound debridement) may introduce pathogens and delay healing. D (oral antibiotics prophylactically) is not recommended without evidence of infection.

Correct Answer: C

Rationale: The correct answer is C: Cryptosporidium parvum. This parasite is the most likely cause of the infection due to its presentation with watery diarrhea, abdominal cramps, and nausea after consuming contaminated water. Laboratory tests revealing oocysts in the stool sample further support this diagnosis as Cryptosporidium parvum is known to produce oocysts in the stool. Giardia lamblia (choice A) presents with similar symptoms but does not typically produce oocysts. Entamoeba histolytica (choice B) is more associated with bloody diarrhea and liver abscesses. Cyclospora cayetanensis (choice D) is also associated with watery diarrhea but is less common in this scenario. Thus, based on the symptoms and laboratory findings, Cryptosporidium parvum is the most likely culprit.

Correct Answer: A

Rationale: Encouraging early ambulation and progressive activity as tolerated is the most appropriate nursing intervention to promote optimal recovery for a postpartum client who delivered via cesarean section. Early ambulation helps prevent complications such as blood clots, pneumonia, and constipation. It also promotes circulation and facilitates healing by reducing the risk of postoperative complications. Progressive activity helps the client regain strength, mobility, and independence, which are essential for a speedy recovery. Restoring normal movement will also help decrease discomfort and improve the client's overall well-being. In contrast, restricting movement may lead to complications and delayed recovery. Administering oral analgesics as needed is important for pain management, but promoting early ambulation is essential for optimal recovery. Heat packs should not be applied to the incision site as they can increase the risk of infection and interfere with proper wound healing.