Correct Answer: C

Rationale: The correct answer is C: 'Do you have a chronic disease?' Patients with chronic diseases are more susceptible to infections due to factors like general debilitation and nutritional impairment. Choices A, B, and D are incorrect because having children in the home, having a spouse, or religious beliefs do not directly impact susceptibility to infectious diseases.

Correct Answer: B

Rationale: The correct answer is to assess the patient's oxygen saturation. In suspected pneumonia, ensuring adequate oxygenation is critical to monitor respiratory function. Auscultating lung sounds is important but assessing oxygen saturation takes precedence as it directly reflects the patient's oxygen levels. Monitoring white blood cell count is more related to infection assessment rather than immediate respiratory status. Checking skin integrity is essential for overall patient care but is not the priority in a patient with suspected pneumonia.

Correct Answer: D

Rationale: The correct answer is D. For organ donation to be legally valid, the donor must sign consent documents in the presence of a witness. Choice A is incorrect because while discussing with family is important, it is not a legal requirement for organ donation. Choice B is incorrect as the organ donation process involves various steps and procedures that cannot begin immediately. Choice C is incorrect because organ donation typically requires consent and cooperation from the family if the donor is unable to provide consent.

Correct Answer: C

Rationale: When a surgical mask becomes moist, it loses its effectiveness as a barrier against microorganisms. Therefore, the perioperative nurse should apply a new mask. Choice A is incorrect because a moist mask should not be continued to be worn even if the nurse is comfortable. Choice B is not the best course of action as the mask should be changed immediately when it becomes moist. Choice D is also incorrect as waiting for the mask to air-dry is not recommended due to the loss of barrier effectiveness.

Correct Answer: B

Rationale: The correct answer is B because patients on fall precautions need continuous monitoring until discharge to prevent falls. While encouraging visitors during visiting hours (Choice A) is important for the patient's well-being, it is not related to fall precautions. Checking on the patient every shift (Choice C) is an essential nursing intervention, but keeping the patient on fall precautions is more specific to preventing falls. Raising all four side rails (Choice D) is not recommended as it can restrict the patient's mobility and is considered a restraint practice.