Correct Answer: A

Rationale: Lethargy and difficulty arousing may indicate hypoglycemia, which should be assessed before other actions. Performing a finger stick glucose test is crucial to evaluate the child's blood sugar levels and address hypoglycemia promptly. Increasing the IV fluid flow rate is not indicated without knowing the glucose status. Reviewing 24-hour intake and output is important but not the priority when lethargy and difficulty arousing are present. Obtaining arterial blood gases is not the primary assessment needed in this situation.

Correct Answer: A

Rationale: The correct answer is A: Instruct the client to use pursed-lip breathing. Pursed-lip breathing helps improve ventilation and reduce shortness of breath in COPD clients. This technique involves inhaling slowly through the nose and exhaling through pursed lips. Choice B is incorrect because a high-fat, low-carbohydrate diet is not recommended for individuals with COPD as it can lead to weight gain and worsen respiratory function. Choice C is incorrect as limiting physical activity can lead to deconditioning and worsen COPD symptoms. Regular, moderate exercise is beneficial for individuals with COPD. Choice D is incorrect as excessive fluid intake can strain the heart in COPD clients. It is important to maintain adequate but not excessive fluid intake to prevent dehydration and maintain optimal lung function.

Correct Answer: D

Rationale: Elevated BNP levels in a client with heart failure may indicate worsening heart failure. Therefore, the correct action for the nurse to take when encountering an elevated BNP before administering furosemide is to hold the dose and contact the healthcare provider for further guidance. This precaution is necessary to ensure the client's safety and prevent potential complications. Options A and B are incorrect as they do not address the issue of the elevated BNP, which is crucial in this situation. Option C is also incorrect because administering furosemide without consulting the healthcare provider could be harmful if the client's condition is deteriorating.

Correct Answer: A

Rationale: Asymmetrical chest wall expansion is a critical finding post-thoracentesis as it may suggest a pneumothorax, requiring immediate intervention to prevent further complications. The other options, such as pain at the insertion site (Choice B), decreased pleural effusion on chest x-ray (Choice C), and normal arterial blood gases within acceptable ranges (Choice D) do not indicate an immediate need for intervention like asymmetrical chest wall expansion does.

Correct Answer: B

Rationale: The correct intervention for the nurse to implement first is to place a mask on the client's face. This is crucial to prevent the potential spread of infectious agents to others in the emergency department, considering the presenting symptoms of coughing and fever. Placing a mask helps in containing respiratory secretions and reducing the risk of airborne transmission. Assessing the client's temperature or blood pressure can be done after ensuring infection control measures. Obtaining a chest X-ray would be a secondary intervention once immediate infection control is addressed.