Heart rhythm is mainly controlled by the conduction system of the heart. Any abnormality in the conduction system may result in abnormal heart rhythm (arrhythmia).
Electro-Physiology Study (EPS) is a test to find out the cause of arrhythmia. A patient suffering from arrhythmia may have palpitation, chest discomfort, dizziness or vertigo. In severe condition, the patient may lose consciousness or have sudden death. Radio frequency (RF) energy has been used since 1990 to ablate cardiac arrhythmia. This energy is released at the tip of the catheter to local cardiac tissue, causing an injury area of about 5mm x 5mm, within which the conduction property will be lost. The result will be the successful cure of the arrhythmia.