Prof. Dr. Ali Serdar Fak
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Arrhythmia Treatment
Electrophysiology study (eps)
What an electrophysiology study is, how catheters inside the heart record and test its electrical signals, what it can find and what it cannot, who is usually advised to have one, approximate costs in Turkey against the UK, US and Germany, preparation and the procedure step by step, how it compares with Holter and loop recorders, ablation in the same session, recovery, risks and how to choose a centre.
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Dr. Bülent İlçöl
Cardiac SurgeryVerified
- 25+years exp.
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Electrophysiology study (EPS) in Turkey: what it is and how it works
An electrophysiology study (EPS) is a test that records and challenges the electrical activity of the heart from the inside. Thin, flexible catheters are guided through a vein, usually at the groin, to the heart, where electrodes on their tips record the electrical signals and pace the heart at controlled rates. By measuring how signals travel through the chambers and by trying to provoke an abnormal rhythm under supervision, the cardiologist can find where a rhythm problem starts and how it behaves. It is performed in a catheter laboratory by an electrophysiologist, a cardiologist with additional training in heart rhythm, and is available in cardiology centres across Turkey.
This guide explains what EPS tests, what it can and cannot find, who is advised to have one, what it costs in Turkey compared with the UK, US and Germany, how it is done step by step, how it compares with simpler rhythm monitors, what recovery involves and how to choose a centre. For the wider range of heart services see our overview of cardiology treatments in Turkey.
What part of the heart does an EPS test?
Each heartbeat starts in a small cluster of cells at the top of the right atrium, the sinus node, and spreads through the upper chambers to the atrioventricular (AV) node, then along fast-conducting fibres to the ventricles. A fault anywhere on this path can cause a rhythm that is too slow, too fast or irregular. An EPS measures how long signals take between these points, how well the sinus node recovers after pacing and how the AV node and ventricles respond to extra beats. It can also reveal an extra electrical connection, as in Wolff-Parkinson-White syndrome, or a small circuit that keeps a fast rhythm going.
What can an electrophysiology study find, and what can it miss?
Guidelines from the European Society of Cardiology and the American Heart Association describe EPS as useful for finding the mechanism of a fast heart rhythm (supraventricular or ventricular tachycardia), investigating unexplained fainting in people with heart disease, assessing conduction block and judging the risk of dangerous rhythms in selected patients. It is particularly valuable because a diagnosis can often be followed by treatment in the same session. It also has limits. An arrhythmia that cannot be provoked in the laboratory may be missed, and a rhythm provoked by aggressive pacing may not matter in daily life, so the cardiologist interprets results alongside your symptoms and earlier tests. A normal study lowers, but does not remove, the likelihood of a serious cause. Because it is invasive, it is generally used after non-invasive tests have been done.
Electrophysiology study (EPS) cost in Turkey compared with the UK, US and Germany
The ranges below are approximate prices for the procedure with the hospital stay, not hospital quotes. A diagnostic study costs less than one combined with ablation, since ablation adds more catheters, time and sometimes a three-dimensional mapping system. Each hospital confirms its price in writing.
| Country | Diagnostic EPS only (approx.) | EPS with ablation (approx.) |
|---|---|---|
| Turkey | €1,500 – €5,000 | €4,000 – €13,000 |
| United Kingdom | €3,500 – €9,000 | €7,000 – €18,000 |
| United States | €8,000 – €30,000 | €15,000 – €50,000 |
| Germany | €3,000 – €8,000 | €6,000 – €16,000 |
The price depends on the length of the procedure, the number of catheters, use of 3D mapping or intracardiac ultrasound, the type of anaesthesia, the number of hospital nights and whether tests and a cardiology consultation are included.
Who is advised to have an EPS, and who may not need one?
Doctors usually suggest EPS for people with palpitations that were documented as a fast rhythm but not explained, a known tachycardia that is troublesome or dangerous, fainting with signs of heart disease, an ECG pattern suggesting an extra pathway, or a heart attack scar with a risk of ventricular rhythm problems. It can also help decide whether someone needs a pacemaker or defibrillator. Most people with occasional palpitations do not need it; a physical examination, ECG, blood tests, an echocardiogram and a period of wearing a monitor generally come first. Pregnancy, uncontrolled infection, severe uncontrolled heart failure or bleeding disorders may mean delaying the study. If a pacemaker is under discussion, see our guide to pacemaker implantation.
Preparation and the procedure, step by step
- Pre-assessment. ECG, blood tests, an echocardiogram and a review of your medicines. Some antiarrhythmic drugs are stopped for several days; never stop any medicine without instructions, and blood thinners need a specific plan.
- Fasting. You usually do not eat for about six hours beforehand.
- Anaesthesia. The groin is numbed with local anaesthetic, often with light sedation. Some centres use general anaesthesia, especially if ablation is planned.
- Catheters. Several thin catheters are guided through veins under X-ray to different parts of the heart. You do not feel them inside the heart.
- Recording and pacing. Baseline signals are recorded, the heart is paced at different speeds, and extra beats are given to try to start the rhythm problem. You may feel palpitations or a racing heart during this part; the team can stop the rhythm with pacing or a medicine.
- Finish. The catheters are removed and the entry points are pressed to stop bleeding.
A diagnostic study takes about one to two hours, and ablation can add one to three hours.
EPS compared with Holter monitoring, event recorders and loop recorders
| Test | Best suited to | Typical limits |
|---|---|---|
| Electrophysiology study | Finding the mechanism of a tachycardia and treating it in the same session | Invasive; some rhythms cannot be provoked |
| 24-hour to 7-day Holter monitor | Frequent palpitations or skipped beats | Misses rare events; gives no mechanism |
| Patch or event recorder | Episodes every few weeks | Needs you to trigger it; no pacing or testing |
| Implantable loop recorder | Rare, unexplained fainting needing months or years of monitoring | Minor procedure; records but does not treat |
Can the problem be treated in the same session?
Often yes. If the study shows the origin of a fast rhythm, the electrophysiologist may use a catheter to deliver radiofrequency heat or cold energy that ablates a tiny area of tissue and switches off the abnormal circuit. For an accessory pathway this is described in our guide to catheter ablation of accessory pathways, and for more complex rhythms a three-dimensional map of the heart helps guide the catheter; see radiofrequency ablation with 3D mapping. For the range of rhythm disorders and treatments see arrhythmia treatment. You should agree beforehand whether ablation may be done in the same session, as it changes the consent, the price and the length of stay.
Recovery and how long to stay in Turkey
After a diagnostic study you lie flat for a few hours to protect the groin, then walk. Many people go home the same day or after one night; after ablation an overnight stay is common. The groin may be bruised and tender for a week, and a small lump or mild chest discomfort can occur. Avoid heavy lifting, strenuous exercise and hot baths for about a week, or as the team advises, and do not drive for a day or two after sedation. For flying, most centres suggest waiting until the cardiologist has reviewed you; plan for two to four nights in Turkey, longer if ablation is done. Keep copies of the report, ECG and any mapping images for your own doctor.
Risks and complications of an electrophysiology study
EPS is generally safe in experienced hands, but it is an invasive procedure. Common effects are bruising and discomfort at the groin. Less common problems include bleeding or a blood-vessel injury, infection, an adverse reaction to sedation or contrast, and temporary rhythm disturbances, which are treated in the laboratory. Rare but serious complications include fluid around the heart from a perforation, a blood clot or stroke, damage to the heart's electrical system that needs a pacemaker, and, very rarely, death. The NHS and the American Heart Association advise asking about the specific risks in your case, which are higher with severe heart disease and with ablation. Report fever, a growing groin swelling, chest pain, breathlessness or weakness after you go home.
How to choose a centre, red flags and questions to ask
Look for a hospital with a dedicated cardiac catheter laboratory, an electrophysiologist who performs the procedure regularly, cardiac anaesthesia and intensive care on site, and emergency cardiac surgery cover. Red flags include a price without a breakdown, no cardiology review before the procedure, no explanation of risks and pressure to add ablation without a diagnosis. Read how our process works and request a written plan through the free quote page. Questions to ask:
- Who performs the study and how many do they do each year?
- Is ablation included if it is needed, and what is the extra cost?
- What type of anaesthesia is planned and how long is the hospital stay?
- Which medicines must I stop, and when?
- What follow-up and report will I receive in English?
Hospitals with Cardiac Surgery in Turkey
Frequently asked questions
An electrophysiology study (EPS) uses thin catheters in the heart to record its electrical signals and test how it responds to pacing. It finds the cause of rhythm problems and often allows treatment in the same session.
The groin is numbed and you are often lightly sedated, so most people feel pressure rather than pain. You may notice palpitations when the rhythm is provoked, and the groin can be tender for several days.
A diagnostic study is roughly €1,500 to €5,000 in Turkey, against about €3,500 to €9,000 in the UK. With ablation the range is higher. The hospital confirms its price in a written quote.
A diagnostic study usually takes one to two hours. If ablation is done in the same session, add one to three hours. You also spend several hours lying flat afterwards.
Some people go home the same day after a diagnostic study, but many stay one night, especially after ablation. The cardiologist decides based on your condition and the procedure.
The groin may be bruised or tender for about a week. Avoid heavy lifting and hard exercise for around a week, or as advised, and do not drive for a day or two after sedation.
It is generally safe in experienced hands, but it carries risks such as bleeding, infection and rarely perforation, stroke or a need for a pacemaker. Your cardiologist should explain how these apply to you.
A Holter monitor records your heart rhythm from outside over days, while EPS is invasive, tests the heart's response directly and can treat the cause. Holter and similar monitors are normally used first.
Often yes. If the study finds the source of a fast rhythm, the electrophysiologist may ablate it in the same session, provided you agreed in advance. This changes the cost and the length of stay.
Plan about two to four nights for a diagnostic study and a few more if ablation is done. The cardiologist will say when it is safe to fly home.
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