Correct Answer: C

Rationale: A pulse oximetry reading of 88 indicates hypoxia, which is a serious condition requiring immediate intervention. Adequate oxygenation is crucial for the client's well-being. Choices A and B are normal findings after endotracheal intubation. Hearing bilateral breath sounds and seeing mist in the T-piece indicate proper functioning of the endotracheal tube. While choice D may indicate an issue with speaking due to the endotracheal tube, it is not as critical as the hypoxia indicated by the low pulse oximetry reading.

Correct Answer: C

Rationale: When children are hospitalized, it is common for them to regress in toileting behaviors due to the unfamiliar environment and stress. It is important for the nurse to provide reassurance to the parents in such situations. Option A is incorrect because suggesting neurological complications without evidence could cause unnecessary alarm. Option B is not the most appropriate response as the focus should be on explaining the common regression in toileting. Option D may not address the underlying reasons for the regression and may not be practical during the hospital stay.

Correct Answer: B

Rationale: Ciprofloxacin can cause crystalluria, so increasing fluid intake to 2-3 liters per day helps flush out the medication and prevent crystal formation in the kidneys. This also ensures adequate hydration, which supports the body's ability to fight the infection. Choice A is incorrect because ciprofloxacin should not be taken with dairy products as they can interfere with the absorption of the medication. Choice D is incorrect because although it's important to complete the full course of antibiotics, it's equally crucial to report any improvement in symptoms to the healthcare provider.

Correct Answer: D

Rationale: The correct answer is to increase the humidity of the oxygen source. This action helps thin thick secretions, making them easier to clear from the tracheostomy tube. Increasing fluid intake (Choice A) can be beneficial in some cases but addressing humidity is more specific to managing thick secretions in a client with a tracheostomy. Tracheal suctioning (Choice B) should be done after attempting to thin the secretions with increased humidity. Administering a mucolytic agent (Choice C) is a possible intervention but typically comes after addressing humidity and before resorting to suctioning to avoid unnecessary invasiveness.

Correct Answer: D

Rationale: The correct answer is D: Advise the client to use energy conservation techniques. Energy conservation techniques are crucial in managing fatigue in multiple sclerosis. These techniques involve prioritizing activities, pacing oneself, and taking rest breaks to prevent overexertion, which can exacerbate fatigue. Encouraging the client to increase physical activity (choice A) may worsen fatigue if not done with proper energy conservation. Taking rest breaks during activities (choice B) is important but falls secondary to teaching energy conservation techniques. Administering a stimulant medication to reduce fatigue (choice C) should not be the priority as non-pharmacological interventions like energy conservation should be attempted first.