Final answer:
For a child with Kawasaki disease, the monitoring technique that should be periodically utilized is an Echocardiogram to check for heart-related complications such as coronary artery aneurysms.
Step-by-step explanation:
The appropriate monitoring for a child with Kawasaki disease is a periodic Echocardiogram. Kawasaki disease is a condition that primarily affects children and includes symptoms of fever, rash, and inflammation of the blood vessels, including those of the heart. The disease can lead to complications such as coronary artery aneurysms, which is why echocardiograms are used to monitor the child's heart health over time. Liver function tests (LFTs), check of the blood's amylase or lipase levels, complete blood count (CBC), and ultrasound are valuable tools for diagnosing and assessing various conditions, but for Kawasaki disease, specifically, the focus is on the heart rather than the liver or pancreas.