Correct Answer: B

Rationale: The correct answer is B: Provide IV fluids. The first step in caring for a client with severe burn injuries is to ensure adequate hydration and prevent hypovolemic shock. IV fluids are crucial to replace lost fluids and maintain circulation. Cooling the burn site (choice A) may be important but not the first step. Providing pain relief (choice C) is important but not as critical initially. Initiating IV fluids (choice D) is similar to the correct answer, but providing IV fluids is more urgent than initiating them.

Correct Answer: C

Rationale: The correct answer is C: Begin with the head. This is the most appropriate action as starting with the head allows the nurse to establish rapport with the infant and assess their level of alertness before progressing further. By starting at the head, the nurse can also observe the infant's facial expressions and interactions with the caregiver, providing valuable information about the infant's overall well-being. Assessing reflexes first (Choice A) may startle the infant, asking the parent to undress the child (Choice B) can be done after the initial assessment, and beginning with the legs (Choice D) does not prioritize the critical areas of observation such as the head and face.

Correct Answer: C

Rationale: The correct answer is C. The nurse should prevent infiltration of calcium to avoid tissue necrosis and sloughing. Infiltration of calcium can lead to severe tissue damage due to its caustic nature. Therefore, the nurse should be vigilant in monitoring the IV site and ensuring proper placement to prevent this complication. Choice A is incorrect because infusing hypertonic solutions rapidly can lead to fluid overload and electrolyte imbalances. Choice B is incorrect because exceeding the recommended amount of potassium per liter of fluid can result in hyperkalemia, which can be dangerous. Choice D is incorrect because calcium does not diminish digitalis's action; in fact, calcium can potentiate the effects of digitalis.

Correct Answer: A

Rationale: The correct answer is A: Administer bronchodilators. Bronchodilators help dilate the airways, relieving bronchospasm and improving airflow in clients experiencing shortness of breath and wheezing. This intervention directly addresses the underlying cause of the symptoms. Administering corticosteroids (B) may be considered in severe cases to reduce inflammation but is not the priority initial intervention. Administering pain relief (C) is not indicated unless pain is identified as a contributing factor. Placing the client in a sitting position (D) can help improve breathing but does not directly address the bronchoconstriction causing the wheezing.

Correct Answer: D

Rationale: The correct answer is D: Both B and C. After knee replacement surgery, patients are at risk for developing DVT and pulmonary embolism due to immobility and surgery-related factors. DVT occurs when a blood clot forms in a deep vein, usually in the legs, which can lead to a pulmonary embolism if the clot travels to the lungs. Monitoring for both complications is crucial to prevent serious consequences. Option A, hyperglycemia, is not a common complication following knee replacement surgery and is not directly related to immobility or surgery. Option B, DVT, is correct but does not encompass the risk of pulmonary embolism. Option C, pulmonary embolism, is correct but does not cover the initial risk of DVT formation. Therefore, monitoring for both DVT and pulmonary embolism is essential in post-operative knee replacement patients.