Correct Answer: C

Rationale: During the evaluation phase, the nurse performs the key action of determining the effectiveness of the care plan. This involves assessing whether the client's goals are being met, if interventions are achieving the desired outcomes, and if any modifications are necessary. This step is crucial to ensure the care plan is successful and the client's needs are being addressed appropriately. Choice A is incorrect because diagnosing the client's condition is typically done in the assessment phase, not during evaluation. Choice B is incorrect as identifying nursing interventions is part of the planning phase. Choice D is incorrect as developing goals and outcomes is part of the planning phase as well. Overall, the evaluation phase focuses on assessing the effectiveness of the care plan rather than diagnosing, identifying interventions, or developing goals.

Correct Answer: C

Rationale: Step-by-step rationale for choice C being correct: 1. Restlessness: Indicates increased work of breathing and hypoxia. 2. Suprasternal retractions: Sign of respiratory distress. 3. paO2 of 62: Indicates severe hypoxemia, common in ARDS. Summary: A: Enlarged heart on x-ray does not directly indicate ARDS. B: Thick green sputum suggests infection, not specific to ARDS. D: Wheezes and slow respirations are not typical of ARDS, and pCO2 is normal in ARDS.

Correct Answer: C

Rationale: The correct initial treatment for stage IV ovarian cancer is major surgery (Choice C). This is because at this advanced stage, surgery is typically performed to debulk the tumor and remove as much cancerous tissue as possible, followed by chemotherapy to target any remaining cancer cells. Radiation therapy (Choice A) is not typically the initial treatment for ovarian cancer. Chemotherapy (Choice B) is often used in combination with surgery, but surgery is usually the first line of treatment for stage IV disease. Choosing no treatment (Choice D) would be detrimental as the cancer is advanced and requires immediate intervention.

Correct Answer: D

Rationale: The correct answer is D: Hypocalcemia. The parathyroid glands regulate calcium levels in the body. Without them, calcium levels will drop, leading to hypocalcemia. A: Hypomagnesemia is incorrect because magnesium levels are not directly regulated by the parathyroid glands. B: Hyperkalemia and C: Hypernatremia are incorrect as they are not typically associated with parathyroid gland removal. In summary, the removal of parathyroid glands would result in hypocalcemia due to the disruption of calcium regulation in the body.

Correct Answer: A

Rationale: The correct answer is A because shampooing the hair thoroughly helps remove oil and dirt, which can interfere with the CT scan results. By having clean hair, the scan can produce clearer images. Choice B is incorrect because some preparation is needed for a CT scan, especially regarding cleanliness. Choice C is incorrect as giving a cleansing enema and fluids until 8 AM is not necessary for a CT scan of the head. Choice D is incorrect as shaving the scalp and attaching electrodes are not part of routine preparation for a CT scan.