Correct Answer: A

Rationale: The correct answer is A: Administer IV fluids. Dehydration and hypotension indicate fluid loss, which can lead to organ damage and shock. Administering IV fluids helps restore blood volume and improve blood pressure. Monitoring blood pressure (B) is important but addressing the underlying issue of fluid loss is crucial. Administering antihypertensive medications (C) would further lower blood pressure, worsening hypotension. Administering diuretics (D) would exacerbate fluid loss, worsening dehydration and hypotension.

Correct Answer: C

Rationale: The correct intervention for hyperkalemia is to administer insulin (Choice C). Insulin drives potassium into cells, lowering serum potassium levels. This is effective in acutely reducing high potassium levels. Administering calcium gluconate (Choice A) is used for stabilizing cardiac membranes in hyperkalemia but does not lower potassium levels. Sodium bicarbonate (Choice B) is used for metabolic acidosis, not hyperkalemia. Furosemide (Choice D) is a loop diuretic that can lead to potassium loss but is not the primary intervention for hyperkalemia.

Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. In respiratory distress, the priority is to ensure adequate oxygenation. Oxygen therapy helps improve oxygen levels in the blood and relieve respiratory distress. Administering diuretics (B) may not address the immediate need for oxygen. Increasing respiratory rate (C) may lead to worsening distress if the underlying cause is not addressed. Administering IV fluids (D) is not the priority unless specifically indicated for the client's condition. It is crucial to prioritize oxygen delivery to support vital functions and stabilize the client's condition.

Correct Answer: A

Rationale: The correct answer is A: Administer anticoagulants. This is crucial for preventing blood clots post-surgery as they help thin the blood and reduce clot formation. Monitoring for arrhythmias (B) is important but not the priority in this case. While encouraging deep breathing (C) and fluid intake (D) are beneficial for post-surgical recovery, they do not directly address the risk of blood clot formation. Administering anticoagulants is the most effective intervention to prevent blood clots in high-risk surgical patients.

Correct Answer: D

Rationale: A score of 6 on the MoCA tool indicates severe cognitive impairment because the MoCA is scored out of 30, with a lower score indicating more severe impairment. A score of 6 is significantly below the normal range, indicating severe cognitive deficits affecting various cognitive domains. This score would suggest significant impairment in memory, attention, language, visuospatial abilities, and executive functions. Therefore, Option D is correct. Options A, B, and C are incorrect as they suggest no, mild, or moderate impairment, which would not align with a score as low as 6 on the MoCA tool.