One of the dangers of treating hypernatremia is:

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: B

Rationale: The correct answer is B, "Fluid volume deficit R/T uncontrolled vomiting." This option correctly identifies the cause of the fluid volume deficit as uncontrolled vomiting, which is a common reason for fluid loss. The nursing diagnosis should always reflect the underlying cause of the issue. A is incorrect as "furrow tongue" is not a recognized medical term related to fluid volume deficit. C is incorrect because dehydration is not typically related to subnormal body temperature unless it is severe. D is incorrect as incessant vomiting is more specific to the cause, but the term "dehydration" should be used instead of "fluid volume deficit" in this context. In summary, option B is the appropriate nursing diagnosis as it accurately links the fluid volume deficit to the cause of uncontrolled vomiting.

Correct Answer: B

Rationale: The correct answer is B: Have him breathe into a paper bag. Breathing into a paper bag helps increase the carbon dioxide levels in the blood, which can help reverse respiratory alkalosis caused by hyperventilation during an anxiety attack. This intervention helps to normalize the blood pH and alleviate symptoms. Incorrect choices: A: Making sure oxygen is administered as ordered is not appropriate for respiratory alkalosis due to hyperventilation. Oxygen therapy can worsen the condition by further reducing carbon dioxide levels. C: Placing the student in a semi-fowler's position does not directly address the primary issue of respiratory alkalosis and anxiety-induced hyperventilation. D: Coughing and deep breathing exercises may exacerbate the hyperventilation and worsen the respiratory alkalosis rather than alleviate the symptoms.

Correct Answer: D

Rationale: The correct answer is D: Dysphagia or hoarseness. In laryngeal cancer, dysphagia and hoarseness are early symptoms due to vocal cord involvement. Hoarseness results from vocal cord paralysis, while dysphagia occurs when the tumor obstructs the esophagus. Anemia and fatigue (choice A) are nonspecific symptoms seen in various conditions. A noticeable lump in the neck (choice B) typically indicates metastasis to the lymph nodes, which occurs later in laryngeal cancer. Crackles and stridor (choice C) are more associated with respiratory conditions rather than laryngeal cancer.

Correct Answer: A

Rationale: The correct answer is A: 2 L/min. In emphysema, there is impaired gas exchange due to damaged lung tissue, resulting in decreased oxygen levels. Administering too high a flow rate can lead to oxygen toxicity. The standard oxygen therapy for emphysema is 1-2 L/min to maintain oxygen saturation without causing harm. Higher flow rates like 10 L/min (B) and 6 L/min (C) are excessive and can lead to oxygen toxicity. 95 L/min (D) is dangerously high and not suitable for oxygen therapy in emphysema. Therefore, A is the correct choice for safe and effective oxygen administration in emphysema.