Correct Answer: B

Rationale: The correct answer is B: "Take ferrous sulfate and the antacid at least 2 hours apart." Rationale: 1. Iron absorption is decreased in the presence of antacids due to decreased gastric acidity. 2. Antacids can bind to iron and reduce its absorption. 3. Taking them 2 hours apart allows for optimal iron absorption without interference from the antacid. 4. Taking them together (choice A) would decrease iron absorption. 5. Avoiding antacids altogether (choice C) may not be necessary if spaced apart appropriately. 6. Taking them 1 hour apart (choice D) may still lead to decreased iron absorption due to antacid interference.

Correct Answer: A

Rationale: Rationale: Intrinsic factor is a glycoprotein produced by the stomach that is essential for the absorption of vitamin B12 in the ileum. Without intrinsic factor, vitamin B12 absorption is impaired, leading to megaloblastic anemia. Histamine and hydrochloric acid are not directly involved in vitamin B12 absorption. Liver enzymes are not implicated in the absorption process. Therefore, the correct answer is A.

Correct Answer: B

Rationale: The correct answer is B: Patient expectations. During a nursing health history, it is essential for the nurse to address the patient's expectations to understand their needs, preferences, and goals for care. By focusing on the patient's expectations, the nurse can provide patient-centered care and tailor interventions to meet the patient's specific needs. A: Nurse's concerns - While it is important for the nurse to consider their own concerns, the primary focus should be on the patient's needs and expectations. C: Current treatment orders - This is important information to gather, but it does not directly address the patient's expectations or preferences. D: Nurse's goals for the patient - The nurse should work collaboratively with the patient to establish goals that align with the patient's expectations and preferences, rather than imposing their own goals.

Correct Answer: B

Rationale: The correct answer is B: Cerebral edema. Hypernatremia is an elevated sodium level in the blood, which can lead to osmotic shifts causing water to move out of cells, including brain cells. This can result in cerebral edema, potentially leading to neurological complications. Incorrect choices: A: Red blood cell crenation - This occurs in hypertonic solutions, not hypernatremia. C: Red blood cell hydrolysis - Hypernatremia doesn't directly cause red blood cell hydrolysis. D: Renal shutdown - Hypernatremia can stress the kidneys, but it doesn't typically lead to renal shutdown.

Correct Answer: A

Rationale: The correct answer is A: Position the client flat for at least 3 hrs or as directed by the physician. Rationale: 1. Positioning the client flat helps prevent post-lumbar puncture headache by allowing the CSF to replenish and stabilize the pressure in the spinal canal. 2. The recommended time frame of 3 hours allows for adequate CSF reabsorption and reduces the likelihood of headache. 3. Following physician's direction is crucial to individualize care based on the specific situation. Summary of other choices: B: Encouraging fluid intake is generally good practice but may not directly alleviate post-lumbar puncture headache. C: Keeping the room well lit and playing soothing music may not address the physiological cause of the client's symptoms. D: Ambulation and leg exercises are not recommended immediately post-lumbar puncture as they may exacerbate dizziness and headache.