After a cardiac catheterization, how should the nurse instruct the guardian regarding the toddler's leg?

Maintaining the leg in a straight position for at least 6 hours after a cardiac catheterization is essential to ensure proper healing and prevent complications. This restriction is necessary because movement can increase the risk of bleeding from the insertion site or cause damage to the vessel that was accessed during the procedure. By keeping the leg straight, it helps to stabilize the area, allowing for adequate blood flow and promoting effective clotting.

The requirement for a 6-hour period is especially important in a toddler, as young children may not fully understand the need to remain still, and their movements can be more unpredictable. This instruction is critical to ensure the safety and well-being of the child following the procedure.

It's also important to note that shorter periods of immobility may not provide sufficient time for the body to establish hemostasis, especially after an invasive procedure like cardiac catheterization. Hence, emphasizing this length of time helps in educating the guardian about the importance of following post-procedural care guidelines to avoid any potential complications.