Which of the following is the most numerous type of white blood cell (WBC)?

Correct Answer: A

Rationale: The correct answer is A: Neutrophil. Neutrophils are the most numerous type of WBC, typically comprising 50-70% of total WBC count. They are key players in the body's immune response, phagocytizing pathogens. Basophils, eosinophils, and lymphocytes are less numerous than neutrophils. Basophils are involved in allergic reactions, eosinophils combat parasitic infections, and lymphocytes play a critical role in adaptive immunity. However, in terms of sheer numbers, neutrophils outnumber the other types of WBC.

Correct Answer: C

Rationale: The correct answer is C: Cheese. Cheese is high in sodium and should be avoided on a low-sodium diet. Sodium can contribute to high blood pressure and other health issues. Apples, chicken, and broccoli are all low in sodium and can be included in a low-sodium diet. Cheese is the only option that is high in sodium, making it the correct choice to avoid.

Correct Answer: C

Rationale: The correct answer is C: Fat. Excessive ingestion of fat has been linked to autoimmunity due to its potential to trigger inflammation in the body, which can disrupt the immune system's balance and lead to autoimmune responses. High-fat diets have been associated with increased production of pro-inflammatory molecules, impacting immune function negatively. Protein (choice A) is essential for immune function, vitamin A (choice B) supports immune responses, and zinc (choice D) is crucial for immune system regulation. However, excessive intake of these nutrients typically does not directly lead to autoimmunity like excessive fat consumption does.

Correct Answer: B

Rationale: The correct answer is B because tension headaches typically present as a feeling of pressure or steady constriction on both sides of the head. This is due to muscle tension in the head and neck. Choice A is incorrect as sensitivity to light is more characteristic of migraines. Choice C is incorrect as unilateral paralysis is not typically associated with tension headaches. Choice D is incorrect as vague headache especially peri orbital is not a common symptom of tension headaches. Therefore, the best description of discomfort experienced by a client with a tension headache is the pressure or steady constriction on both sides of the head.

Correct Answer: B

Rationale: The correct answer is B: Related to impaired balance. The rationale for this is that a cerebellar brain tumor can affect the client's coordination and balance due to its location in the brain responsible for fine motor movements. Impaired balance increases the risk for falls and injuries. Visual field deficits (choice A) may contribute to the risk of injury but not as directly as impaired balance. Difficulty swallowing (choice C) and psychomotor seizures (choice D) are not directly related to the client's risk for injury due to a cerebellar brain tumor.

Correct Answer: D

Rationale: The correct answer is D, decreased body temperature and cold intolerance, because these are classic signs of hypothyroidism due to decreased thyroid hormone levels. The body's metabolism slows down, leading to a lower core body temperature and reduced ability to tolerate cold. Exophthalmos and conjunctival redness (choice A) are associated with hyperthyroidism. Flushed, warm, moist skin (choice B) is indicative of hyperthyroidism as well, due to increased metabolic rate. A systolic murmur at the left sternal border (choice C) is not a common finding in hypothyroidism.

Correct Answer: A

Rationale: The correct answer is A: Client’s wife. She is the primary source of information as she witnessed the event firsthand and provided relevant details. In this scenario, the wife's account of the event is crucial in understanding the sequence of events leading to the client's unconscious condition. Medical documents (B), test results (C), and assessment data (D) are all secondary sources of information that may provide additional data but do not have the same level of immediacy or firsthand knowledge as the client's wife. In an emergency situation, information from a reliable eyewitness is often the most valuable initial source for healthcare providers to make critical decisions.

Correct Answer: A

Rationale: The correct answer is A because determining whether an intervention is correct and appropriate for the given situation indicates critical thinking in nursing care implementation. This involves assessing the patient's needs, analyzing the situation, and using evidence-based practice to make informed decisions. This process ensures that interventions are tailored to individual patient needs and promotes safe and effective care delivery. Option B is incorrect because performing a procedure without clinical competency can jeopardize patient safety and is not an example of critical thinking. Option C is incorrect as establishing goals without assessment lacks a foundation in data and may lead to inappropriate care planning. Option D is incorrect as evaluating the effectiveness of interventions is a part of the nursing process but does not specifically demonstrate critical thinking in implementation.

Correct Answer: C

Rationale: The correct answer is C: Wear gloves for blood/body fluid contact. This is the most appropriate action for infection control when caring for a patient with AIDS because HIV is primarily transmitted through blood and certain body fluids. Wearing gloves when coming into contact with blood or body fluids reduces the risk of transmission. Explanation for why other choices are incorrect: A: Wearing gloves at all times may not be necessary and can lead to unnecessary waste of resources. B: Wearing gown and mask at all times is excessive and not indicated unless there is a risk of exposure to blood or body fluids. D: Wearing a mask during patient contact times is not necessary unless there is a risk of exposure to respiratory secretions.