Correct Answer: D

Rationale: Ewing's sarcoma is a type of bone cancer that primarily affects the bones. Therefore, bone pain would be an expected symptom due to this tumor's location. Hemiplegia, which refers to paralysis on one side of the body, Aphasia, a language disorder, and Nausea are not typical symptoms of Ewing's sarcoma. While Nausea is a common symptom in various conditions, it is not specific to bone cancer like Ewing's sarcoma. Therefore, Bone pain is the most likely symptom associated with Ewing's sarcoma.

Correct Answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

Correct Answer: B

Rationale: The most appropriate assignment for a nursing assistant is to take the vital signs of a stable patient. A 10-year-old with a 2-day postappendectomy is considered stable, and routine vital signs monitoring can be safely delegated to a nursing assistant. Clients with bronchiolitis, periorbital cellulitis, and a fractured tibia require more specialized care and assessment by a licensed nurse. Bronchiolitis involves an airway alteration, periorbital cellulitis indicates an infection, and a fractured tibia may raise concerns of abuse. Therefore, options A, C, and D are incorrect for delegation to a nursing assistant.

Correct Answer: C

Rationale: The correct answer is 'severe anxiety.' In severe anxiety, a person focuses on small or scattered details and is unable to solve problems. The client's symptoms of rapid speech, trembling hands, tachypnea, tachycardia, elevated blood pressure, feeling nervous, and having trouble sleeping indicate severe anxiety. Mild anxiety enhances the ability to learn and solve problems, while moderate anxiety narrows the perceptual field but allows the client to notice things brought to their attention. During a panic attack, a person is disorganized, hyperactive, or unable to speak or act, which is not the case in this scenario.

Correct Answer: B

Rationale: In a client with severe burns to the face and neck, airway assessment and supplemental oxygen are crucial. Therefore, applying oxygen is the priority to ensure adequate oxygenation for the client. This intervention takes precedence over other actions to stabilize the client's condition. Starting an IV for fluid resuscitation is the next appropriate step following ensuring oxygenation (Choice A). While pain management is important, it is a secondary priority after ensuring oxygenation and fluid resuscitation, making medicating the client for pain a later intervention (Choice D). Obtaining blood gases (Choice C) is not the immediate priority in this scenario and would typically be ordered by the healthcare provider based on the client's condition and response to initial interventions.