Traditional pacemakers consist of a small metallic device implanted under the skin and long wires that connect it to the heart, residing in the blood vessels. However, leadless pacemakers represent a revolutionary breakthrough in miniaturisation, as the entire device is placed directly inside the heart.

Dr. Hsieh is recognised as an authority in the field of leadless pacemakers, having delivered international presentations and trained other cardiologists in this innovative technology. He holds the distinction of having implanted the highest number of these devices in NSW, which is a testament to his unparalleled proficiency in this area.