Correct Answer: B

Rationale: The correct answer is B: Hemoglobin. Epoetin alfa (Epogen) is a medication commonly used in clients with chronic kidney disease to stimulate red blood cell production. Monitoring hemoglobin levels is crucial to assess the effectiveness of epoetin alfa therapy. Hemoglobin levels reflect the oxygen-carrying capacity of the blood and indicate if the medication is successfully treating anemia associated with chronic kidney disease. Option A, serum creatinine, is a marker of kidney function, not the primary indicator of epoetin alfa effectiveness. Option C, blood urea nitrogen (BUN), is a measure of kidney function and hydration status. Option D, platelet count, assesses clotting ability and is unrelated to monitoring the effectiveness of epoetin alfa in treating anemia in chronic kidney disease.

Correct Answer: C

Rationale: The correct answer is C. Asking about the duration of the surgery indicates readiness to learn about the procedure. This question shows that the client is actively seeking information about the surgical process, demonstrating readiness to learn. Choices A, B, and D reflect concerns, specific requests, or statements unrelated to the learning process. They do not directly indicate readiness to absorb information about the upcoming mastectomy.

Correct Answer: A

Rationale: The correct answer is A: Trying to increase independence. Toddlers around the age of 2 often exhibit behaviors like temper tantrums and saying 'no' as they are asserting their independence and autonomy. This behavior is a normal part of their developmental stage where they are starting to explore and assert their own preferences and desires. Choice B, developing a sense of trust, is more relevant to infants during the trust vs. mistrust stage. Choice C, establishing a new identity, is typically associated with adolescence and identity formation. Choice D, attempting to master a skill, is more indicative of a child trying to learn and develop new abilities rather than the behavior described in the scenario.

Correct Answer: A

Rationale: The correct answer is A: 'Keep a nightlight on in the bathroom.' This safety measure is crucial for older adults to prevent falls by enhancing visibility during nighttime bathroom visits. Choice B is incorrect because setting the room temperature to 68 degrees Fahrenheit may not be universally suitable for all older adults, as individual preferences vary. Choice C is incorrect as placing throw rugs over electrical cords poses a tripping hazard rather than enhancing safety. Choice D is incorrect as using chairs without armrests may not provide adequate support and stability for older adults, increasing the risk of falls.

Correct Answer: A

Rationale: When monitoring rectal temperature, it is crucial to use a thermometer with a short, blunt insertion end to prevent injury and ensure accurate readings. Using a thermometer with a long, slender tip can pose a risk of perforation or discomfort for the client. Therefore, the appropriate action for the nurse to take is to obtain a thermometer with a short, blunt insertion end. Using the available thermometer as is would not address the safety concerns. Requesting a new thermometer is unnecessary when a suitable one is available by just obtaining it. Measuring the temperature orally instead would not provide the required rectal temperature monitoring.