Correct Answer: D

Rationale: Chlorine bleach is the most appropriate agent for disinfecting surfaces contaminated with blood. It is effective in killing a wide range of pathogens, including viruses. Hydrogen peroxide (Choice A) is not as effective as chlorine bleach for bloodborne pathogen disinfection. Chlorhexidine (Choice B) and isopropyl alcohol (Choice C) are more commonly used for skin antisepsis rather than surface disinfection, making them less suitable options in this scenario.

Correct Answer: A

Rationale: Using a designated stethoscope for the toddler is crucial to reduce the risk of spreading RSV to other patients. Choice B is incorrect because N95 respirator masks are not specifically indicated for RSV. Choice C is unnecessary as RSV does not require isolation in a negative pressure room. Choice D is incorrect because the gown should be removed after leaving the room to prevent transmission of pathogens to other areas.

Correct Answer: B

Rationale: In this situation, the nurse should prioritize administering Hydromorphone (choice B), an opioid analgesic, to manage the severe pain effectively. Opioids are the first-line treatment for severe pain, especially in end-stage conditions like osteoporosis. Promethazine (choice A) is an antihistamine and antiemetic, not a potent analgesic. Ketorolac (choice C) is a nonsteroidal anti-inflammatory drug (NSAID) that may not provide sufficient pain relief in severe cases. Amitriptyline (choice D) is a tricyclic antidepressant used for neuropathic pain and depression, but it is not the first choice for managing severe pain in this scenario.

Correct Answer: C

Rationale: The correct answer is C. The client with hypothyroidism who is stuporous should be assessed first as this may indicate a critical condition, possibly related to severe hypothyroidism. Stupor is a state of near-unconsciousness or insensibility, suggesting a decline in neurological function that requires immediate evaluation. Choices A, B, and D do not present with immediate life-threatening conditions that require urgent assessment. While chemotherapy, post-appendectomy complications, and burn care are important, they do not pose the same level of immediate risk as a stuporous client.

Correct Answer: A

Rationale: A paradoxical pulse is a sign of cardiac tamponade, a life-threatening complication of pericarditis that requires immediate intervention. It results from decreased cardiac output due to increased pressure in the pericardial sac. Reporting this finding promptly allows for timely treatment to prevent further deterioration. Dependent edema and substernal chest pain are common in pericarditis but are not as urgent as a paradoxical pulse. A pericardial friction rub is a classic finding in pericarditis and indicates inflammation but is not as critical as a paradoxical pulse.