Correct Answer: C

Rationale: The best plan of action for the nurse is to notify the physician and request orders regarding Serge's oral medications. By involving the physician, the nurse ensures that appropriate instructions are obtained, considering Serge's medical condition and the need for NPO status for the diagnostic test. Administering the medications without medical guidance (choice A) can be risky, as it may affect the test results. Notifying the diagnostic department (choice B) is not the most direct and appropriate action; the physician is the primary healthcare provider responsible for medication orders. Administering the medications with water before the test (choice D) is not advisable when the patient is supposed to be NPO, as it can interfere with the test requirements.

Correct Answer: B

Rationale: The correct answer is B: Benchmarking. Benchmarking involves comparing performance metrics with those from other units or institutions, which is exactly what the nurse is doing by comparing the rate of medication errors on their medical unit to the rate from a medical unit in a magnet hospital. Choice A, Structure audit, is not relevant to this scenario as it focuses on assessing the physical, organizational, or procedural structures in a healthcare setting. Choice C, Risk benefit analysis, involves weighing the potential risks and benefits of a particular course of action, not comparing performance metrics. Choice D, Root cause analysis, is a method used to identify the underlying causes of problems or adverse events, not to compare performance metrics between units.

Correct Answer: D

Rationale: The correct answer is 'Tall peaked T waves.' Tall peaked T waves are characteristic ECG changes associated with hyperkalemia. In hyperkalemia, the elevated potassium levels affect the myocardium, leading to changes in the ECG. ST depression (Choice A) is more commonly associated with myocardial ischemia or infarction. Inverted T wave (Choice B) is seen in conditions like myocardial ischemia or CNS events. Prominent U wave (Choice C) is typically associated with hypokalemia or certain medications. Therefore, in this scenario, the nurse would expect to note tall peaked T waves on the electrocardiogram due to the elevated potassium level.

Correct Answer: B

Rationale: A persistent vegetative state is characterized by the absence of cognitive functioning while basic human functions like the sleep-wake cycle are retained. In this state, the patient shows reflex movements and basic responses to stimuli but lacks awareness or higher mental functions. Choices A, C, and D are incorrect because: A) Obtunded refers to a decreased level of consciousness, not the absence of cognitive functioning. C) Locked-in syndrome is a condition where the patient is aware and awake but cannot move or communicate due to complete paralysis of nearly all voluntary muscles except for vertical eye movements and blinking. D) Brain death is the irreversible cessation of all brain activity, including the brainstem, leading to the loss of all functions of the brain.

Correct Answer: B

Rationale: Orchiditis can be symptomatically treated with ice to reduce inflammation. Choice A is incorrect because orchiditis is not typically caused by streptococcus. Choice C is incorrect as heat is not the recommended treatment for orchiditis. Choice D is also incorrect as surgery is not the first-line treatment for orchiditis.