What is Electrophysiological Study (EFF)?

It is the English abbreviation of a diagnostic examination called an Electrophysiological Study (EPS). This examination is used in the diagnosis of diseases of the rhythm and conduction system of the heart. This procedure may be needed in the investigation of palpitations, in the investigation of fainting, or in the investigation of a number of disorders detected in other heart examinations. The basis of the procedure is to record electrical signals from inside the heart via electrode catheters sent to the heart via peripheral vascular pathways and to reveal rhythm disturbances that may cause palpitations by giving small electrical stimuli. The procedure is roughly similar to coronary angiography from the outside.

Here, too, the procedure begins when the patient is hospitalized, prepared for the procedure, and brought to the laboratory where procedures such as angiography are performed. Mostly, the veins passing through the groin are entered by administering local drugs (entering the artery in the same region in the angiography), through the provided pathways, special materials (electrode catheter) with wires and covered with plastic-like substances are inserted into the heart.

Then, recordings are taken from various points in the heart by means of these catheters, small electrical stimuli are given to try to reveal the rhythm disorder that may cause the patient to complain of palpitation. The whole process takes 20-30 minutes. General anesthesia is not performed during the procedure (no sleep). Only the groin area is numbed locally. However, in very excited and anxious patients, additional intravenous sedative drugs can be given. After the procedure, the patient is sent to the bed. He can go home between 6 hours and 12 hours. As a result of the procedure, it is determined whether a rhythm disorder is the cause of the patient’s palpitations, what type of rhythm disorder is present, whether the cause of fainting is due to the heart, and whether there is a vital disorder in the electrical system of the heart.

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