A nurse is providing postoperative care for a child following an arterial cardiac catheterization. Which of the following actions should the nurse take?

Postoperative care for a child after cardiac catheterization focuses on preventing vascular complications at the arterial access site. Knowledge of hemostasis, clot stability, and the prevention of arterial hemorrhage is essential for implementing correct positioning and monitoring protocols. Choice A rationale While monitoring output is important, an indwelling urinary catheter is not standard for routine post-catheterization care. Fluid intake is encouraged to flush contrast dye, but the primary focus remains on the arterial site integrity and distal pulses. Choice B rationale Pressure dressings are critical for maintaining hemostasis at the arterial puncture site. Removing the dressing after only 4 hours is premature, as it increases the risk of hematoma formation or acute hemorrhage before the vessel has sealed. Choice C rationale Keeping the affected extremity straight prevents kinking of the vessel and displacement of the initial clot at the femoral access site. Maintaining this position for 6 hours reduces the risk of arterial bleeding and post-procedural complications. Choice D rationale Children are typically not kept NPO for 6 hours post-procedure unless there are specific complications. Once the child is awake and alert following sedation, clear liquids are usually started to help eliminate the radiopaque contrast medium.