Correct Answer: C

Rationale: In a triage situation, an asymmetrical thorax suggests a potentially life-threatening condition such as a pneumothorax or hemothorax, requiring immediate attention. This client should be tagged as emergent. Periorbital ecchymosis and deep-partial thickness burns, while concerning, may not indicate an immediate life-threatening situation. An open fracture of the femur, although serious, can be prioritized after addressing emergent cases.

Correct Answer: A

Rationale: The correct answer is A: Clumsiness, difficulty running, climbing, and riding a bicycle are some of the earliest signs and symptoms of Duchenne's muscular dystrophy. Duchenne's muscular dystrophy is a genetic disorder characterized by progressive muscle degeneration and weakness. Choices B, C, and D are incorrect because they do not represent the typical early signs and symptoms of Duchenne's muscular dystrophy. Pain and inflammation in the bones (choice B) are more indicative of conditions like osteomyelitis; deformity of the foot (choice C) is characteristic of talipes or clubfoot; and infection in the joint leading to arthritis (choice D) is more aligned with septic joint or supportive arthritis.

Correct Answer: D

Rationale: Orthostatic hypotension and flat neck veins are classic manifestations of fluid volume deficit. When the body loses fluid, blood volume decreases, leading to decreased venous return to the heart, resulting in orthostatic hypotension and flat neck veins. Choices A, B, and C are more indicative of other conditions such as dehydration, respiratory issues, or compensatory mechanisms in response to hypovolemia, respectively.

Correct Answer: D

Rationale: The correct answer is D. A 99-year-old exercising their right to autonomy in the context of patient rights by choosing CPR. Autonomy in healthcare refers to the patient's right to make their own decisions about their care, even if healthcare providers may disagree. In this scenario, the 99-year-old patient is exercising autonomy by making an informed choice about their medical treatment, despite healthcare professionals having a different opinion. Choices A, B, and C do not directly demonstrate the exercise of autonomy in decision-making regarding medical treatment, making them incorrect.

Correct Answer: B

Rationale: Catheter-related infections pose the greatest risk for patients in healthcare settings. Catheters are invasive devices that can introduce pathogens directly into the bloodstream, leading to severe infections. Pneumonia, intravenous line infections, and C. difficile infections are serious concerns as well, but catheter-related infections are particularly risky due to the direct access they provide for pathogens to enter the body.