Correct Answer: B

Rationale: The correct answer is B: 2.0mEq/L. Severe vomiting can lead to hypokalemia, characterized by flat T waves and ST segment depression on ECG. This is due to decreased potassium levels affecting cardiac repolarization. A potassium level of 2.0mEq/L is dangerously low and consistent with the ECG findings in this scenario. Choices A, C, and D have potassium levels that are not reflective of severe hypokalemia, therefore they are incorrect. Option A (4.0mEq/L) is within the normal range, option C (8.0mEq/L) is elevated, and option D (2.6mEq/L) is higher than the correct value of 2.0mEq/L.

Correct Answer: C

Rationale: The correct answer is C: Hypoventilation. In chronic respiratory acidosis, the lungs cannot effectively eliminate carbon dioxide, leading to an accumulation of CO2 in the blood, causing acidosis. Hypoventilation results in decreased removal of CO2, exacerbating the acidosis. A: Hyperventilation would lead to respiratory alkalosis, not acidosis. B: Loss of acid by kidneys would result in metabolic alkalosis, not respiratory acidosis. D: Loss of base by kidneys would lead to metabolic acidosis, not respiratory acidosis. In summary, the main issue in chronic respiratory acidosis is inadequate elimination of CO2 due to hypoventilation, leading to acidosis.

Correct Answer: D

Rationale: The correct answer is D because interviewing a client suspected of being a victim of abuse involves critical thinking in assessment by gathering relevant information, analyzing the situation, and making informed decisions. This activity helps identify potential risks and ensures the client's safety. On the other hand, options A and C involve implementing orders and diagnosing conditions, respectively, which are more related to clinical decision-making rather than assessment. Option B focuses on education, which is not directly linked to assessment activities.

Correct Answer: C

Rationale: The correct answer is C because older clients with AIDS have a faster progression of the disease due to age-related changes in the immune system, making them more vulnerable to complications. This results in a greater need for care compared to younger counterparts. Choice A is incorrect as lack of balanced diet and activity does not directly relate to the progression of AIDS. Choice B is incorrect as knowledge about disorders is not the main factor affecting the level of care needed. Choice D is incorrect as adherence to therapy is important but not the main reason older clients need more care.

Correct Answer: C

Rationale: The correct order of priority for nursing actions for a new laryngectomee is: ii.Set up a visit from a well-adjusted laryngectomee, iii.Maintain a patent airway, iv.Control postoperative pain, i.Assist with ambulation. Setting up a visit from a well-adjusted laryngectomee comes first to provide emotional support and guidance. Maintaining a patent airway is crucial for breathing. Controlling postoperative pain is important for comfort. Assisting with ambulation is necessary but can be done after ensuring the other priorities are addressed. Other choices are incorrect because they do not prioritize emotional support, airway maintenance, and pain control before assisting with ambulation.