Correct Answer: B

Rationale: The correct action in this scenario is to disconnect the electronic blood pressure machine and measure the client's blood pressure manually every 15 minutes. Given that the machine is malfunctioning and providing inconsistent readings, relying on manual measurements ensures accuracy and maintains the quality of care. Notifying the manufacturer (Choice A) may be necessary in the long run, but the immediate concern is the accuracy of the vital signs. Adjusting the machine settings again (Choice C) without resolving the underlying issue would not address the problem. Ignoring the extra readings (Choice D) could lead to incorrect assessment and compromise patient care. Therefore, the best course of action is to disconnect the machine and opt for manual blood pressure measurements until the issue is resolved.

Correct Answer: B

Rationale: The correct answer is B. Petroleum jelly is flammable and should not be used with oxygen therapy as it can increase the risk of fire. Using petroleum jelly near oxygen can lead to a fire hazard. Choices A, C, and D are correct statements that indicate proper understanding of oxygen therapy safety measures. Choice A emphasizes the importance of keeping the oxygen tank upright to prevent leaks, choice C highlights the necessity of avoiding smoking to prevent exacerbation of COPD, and choice D encourages seeking medical help promptly in case of breathing difficulties.

Correct Answer: A

Rationale: The correct answer is to wear a gown when caring for the client. Shigellosis is highly contagious, and contact precautions are essential to prevent the spread of infection. Wearing gloves alone may not provide adequate protection as the client's diarrhea can contain infectious pathogens that can easily spread. Standard precautions include hand hygiene, but specific precautions for shigellosis require wearing a gown to protect against contact with infectious material. Wearing a mask and face shield are not necessary for shigellosis, as the primary mode of transmission is through the fecal-oral route, and these precautions are not indicated for this type of transmission.

Correct Answer: B

Rationale: The correct answer is B: Obtain a class C fire extinguisher to extinguish the fire. Using a class C fire extinguisher is appropriate for electrical fires, which can include fires involving electrical equipment or appliances. In this scenario, a paper fire in a trash can in the client's bathroom could potentially involve electrical components, making a class C fire extinguisher the most suitable choice. Option A, opening the windows, may help with ventilation but does not address the fire directly. Option C, removing electrical equipment, is a precautionary measure but does not address the immediate fire hazard. Option D, placing wet towels along the base of the door, is a strategy to prevent smoke from entering the room but does not extinguish the fire.

Correct Answer: B

Rationale: The nurse demonstrated responsibility by recognizing the potential harm of administering an antibiotic the client is allergic to and taking the necessary steps to ensure the client's safety. Choice A, 'Fairness,' is not applicable in this scenario as it does not involve treating individuals equitably. Choice C, 'Risk-taking,' is incorrect as the nurse's actions aimed to minimize risks rather than taking them. Choice D, 'Creativity,' is not the best fit as the nurse's actions focused on following established protocols and ensuring patient safety rather than thinking innovatively.