Correct Answer: B

Rationale: To infuse 50 mL over 20 minutes, the pump should be set to 150 mL/hr. This calculation ensures the correct rate for the infusion of the medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the given information.

Correct Answer: A

Rationale: The correct answer is A: Provide a quiet and calm environment to minimize confusion. For clients diagnosed with delirium, creating a tranquil setting can help reduce agitation and disorientation. This intervention aims to decrease stimuli that may exacerbate symptoms. Administering medication (choice B) is not the primary intervention for delirium; it is usually reserved for specific underlying causes. While social interaction (choice C) and physical activity (choice D) are beneficial for overall well-being, they are not the primary interventions for managing delirium.

Correct Answer: A

Rationale: The correct answer is A: Increased shortness of breath. In COPD, worsening symptoms often include increased shortness of breath due to impaired lung function. This indicates a decline in respiratory status and the need for prompt intervention. Choice B, decreased wheezing, is not indicative of worsening COPD as it could suggest better airflow. Choice C, productive cough with green sputum, may indicate an infection but not necessarily worsening COPD. Choice D, a slight increase in fatigue, is non-specific and may not directly correlate with the worsening of COPD.

Correct Answer: C

Rationale: The correct answer is C. Clear fluid draining from the ear may indicate a cerebrospinal fluid (CSF) leak, which is a serious complication following a head injury. Reporting this finding is crucial as it may require immediate medical intervention to prevent further complications. Choices A, B, and D are not as concerning as a CSF leak. A GCS score of 12 is relatively high, indicating a mild level of consciousness alteration. An edematous bruise on the forehead is a common physical finding after a head injury. Pupils that are 4 mm and reactive to light suggest normal pupillary function.

Correct Answer: D

Rationale: Tremors, nervousness, and insomnia indicate that the dose may be too high, requiring a dose adjustment.