Correct Answer: A

Rationale: Administering oxygen is the best intervention for a patient experiencing respiratory distress because it helps improve oxygenation. Oxygen therapy is the initial and priority intervention to ensure an adequate oxygen supply to the body tissues. Administering bronchodilators (Choice B) may be appropriate for specific respiratory conditions like asthma or COPD but is not the first-line intervention in all cases of respiratory distress. Administering IV fluids (Choice C) is not a standard intervention for respiratory distress unless there is an underlying cause like dehydration. Repositioning the patient (Choice D) can aid in optimizing ventilation but is not the primary intervention for respiratory distress.

Correct Answer: C

Rationale: A platelet count of 90,000/mm³ indicates thrombocytopenia, which increases the risk of bleeding and requires immediate intervention. Thrombocytopenia can lead to serious bleeding complications, so it is crucial to address this finding promptly. A low white blood cell count (choice A) may indicate neutropenia but is not as immediately life-threatening as severe thrombocytopenia. A hemoglobin level of 8 g/dL (choice B) would require intervention but is not as urgent as addressing a critically low platelet count. A serum potassium level of 3.5 mEq/L (choice D) is on the lower side of normal but does not pose an immediate risk to the client's safety compared to severe thrombocytopenia.

Correct Answer: A

Rationale: The correct answer is to apply a hydrocolloid dressing. Stage 3 pressure ulcers are characterized by full-thickness skin loss involving damage to or necrosis of subcutaneous tissue, which requires a moist environment for healing. Hydrocolloid dressings help maintain a moist wound environment, promote healing, and provide protection. Providing wound debridement may be necessary but is not the priority intervention at this stage. Changing the dressing daily is important for wound care but not the priority over creating an optimal healing environment. Elevating the affected area can help with circulation and reduce swelling, but it is not the priority intervention for a stage 3 pressure ulcer.

Correct Answer: D

Rationale: The correct answer is 'D: Transporting a client to x-ray.' This task is appropriate for delegation to assistive personnel as it involves transferring the client safely from one location to another, which does not require the specialized skills of a healthcare provider. Adjusting the flow rate of the client's oxygen tank (Choice A) involves making clinical decisions that should be done by a licensed healthcare provider. Collecting a urine sample (Choice B) and measuring the client's pain level (Choice C) require critical thinking and assessment skills that are typically within the scope of practice of licensed healthcare providers, not assistive personnel.

Correct Answer: D

Rationale: The correct answer is D: Perform range-of-motion exercises daily. After a stroke, performing range-of-motion exercises can help prevent complications such as joint stiffness and contractures. Options A, B, and C are incorrect. Anticoagulant medications are often prescribed to prevent blood clots after a stroke, fluid intake should be adequate unless indicated otherwise, and isometric exercises can be beneficial during recovery.