Correct Answer: D

Rationale: Verifying the blood type with another nurse is critical before starting a blood transfusion to prevent a potentially life-threatening transfusion reaction. This step ensures that the client receives the correct blood product. Administering pre-transfusion medication, ensuring adequate fluid intake, and monitoring vital signs are important steps during the transfusion process, but verifying the blood type is the most crucial step to ensure patient safety.

Correct Answer: C

Rationale: Elevating the affected leg promotes venous return and reduces swelling, which is a priority intervention for a client with suspected DVT. This action helps prevent the thrombus from dislodging and causing further complications. Encouraging ambulation may dislodge the clot, leading to a pulmonary embolism. Applying a warm compress can increase blood flow to the area, potentially dislodging the clot. Administering anticoagulants is essential but should not be the first action as elevation helps to reduce the risk of complications associated with DVT.

Correct Answer: D

Rationale: Proper hydration is crucial in managing sickle cell anemia (SCA) as it helps prevent sickling of red blood cells and reduces blood viscosity, which can lead to painful crises. Ensuring the child drinks enough fluids is essential to maintain adequate hydration levels and reduce the risk of complications. While nutritional guidelines and recognizing signs of infection are important aspects of care, maintaining proper hydration is the most immediate and critical factor in managing SCA and preventing crises.

Correct Answer: B

Rationale: The correct answer is to encourage the client to increase walking distance gradually. This intervention is effective because gradual increases in walking distance promote circulation, improve oxygen delivery to tissues, and help reduce leg pain caused by peripheral vascular disease. Elevating the legs above the heart (Choice A) may be beneficial in other conditions like venous insufficiency but not specifically for peripheral vascular disease. Encouraging the client to avoid sitting or standing for long periods (Choice C) can help prevent blood pooling but does not directly address the walking-induced leg pain. Instructing the client to use warm compresses for pain relief (Choice D) may provide temporary relief but does not address the underlying circulation issues associated with peripheral vascular disease.

Correct Answer: B

Rationale: In clients with COPD experiencing difficulty breathing, increasing the client's oxygen flow rate is the priority intervention. This action helps to improve oxygenation and relieve shortness of breath. While bronchodilators and other medications may be necessary, providing immediate oxygen support is crucial. Elevating the head of the bed and repositioning the client can assist with breathing comfort but do not address the immediate need for improved oxygenation in COPD exacerbation.