Correct Answer: C

Rationale: The correct answer is C (280 to 295mOsm/kg) because serum osmolality is primarily determined by sodium, glucose, and blood urea nitrogen levels. Normal serum sodium range is 135-145 mEq/L, which corresponds to an osmolality range of 280-295 mOsm/kg. Choices A and B are incorrect as they do not align with normal serum sodium levels. Choice D is incorrect as it includes an excessively wide range that is not consistent with normal osmolality values.

Correct Answer: A

Rationale: The correct answer is A because it accurately describes the procedure of bronchoscopy. The nurse's explanation should focus on the insertion of a small tube through the nose or mouth into the bronchi to visualize the airways. This information helps the patient understand the basic process and what to expect during the procedure. Choice B is incorrect as bronchoscopy does not involve breathing a radioactive substance to show diseased areas in the lungs. Choice C is also incorrect as there is no requirement to drink a thick white liquid for bronchoscopy. Choice D is incorrect as dye injection is not a standard part of bronchoscopy, and asking about allergies to dye is irrelevant in this context.

Correct Answer: C

Rationale: Step-by-step rationale: 1. The cranial nerve responsible for facial expression is CN VII, the facial nerve. 2. When a neurologist asks a patient to smile, they are testing the function of CN VII. 3. CN II (optic nerve) is responsible for vision, not facial expression. 4. CN X (vagus nerve) is responsible for various functions like heart rate and digestion, not facial expression. 5. CN XI (accessory nerve) is responsible for shoulder movement, not facial expression. Summary: Testing a patient's ability to smile involves assessing the function of CN VII, the facial nerve. Choices A, B, and D are incorrect as they are associated with different functions and not responsible for controlling facial muscles.

Correct Answer: B

Rationale: Step-by-step rationale: 1. Corticotropin-secreting pituitary adenoma leads to excess adrenocorticotropic hormone (ACTH) production. 2. High corticotropin levels would be expected due to the adenoma's overproduction. 3. The high cortisol levels occur as a result of increased ACTH stimulating cortisol release from the adrenal glands. 4. Therefore, choice B (high corticotropin and high cortisol levels) is the correct answer. Summary: - Choice A is incorrect because low cortisol levels would not be expected in a client with a corticotrophin-secreting pituitary adenoma. - Choice C is incorrect because low corticotropin levels would not align with the excessive ACTH production from the adenoma. - Choice D is incorrect as both low corticotropin and low cortisol levels would not be consistent with the pathophysiology of a corticotrophin-secreting pituitary adenoma.

Correct Answer: C

Rationale: The correct answer is C because respirations of 16 are measurable and quantifiable, making them objective data. Subjective data, like choices A, B, and D, are based on the patient's feelings or experiences and cannot be measured or observed directly. Choice A is subjective as it relies on the patient's self-report. Choice B is subjective as it describes a symptom reported by the patient. Choice D is subjective as it reflects the patient's feeling of nausea. Objective data is essential for making accurate clinical assessments and decisions.