Electrophysiology (EP) Study

What is an EP study?

A cardiac electrophysiology (EP) study is a test that is used to check if your heart's electrical system is working properly, and find out why if it is not.

Your heart’s electrical system coordinates your heart’s contractions to allow blood to flow normally and create a regular heartbeat or rhythm. This natural rhythm may be affected by many factors, leading to irregular heartbeat (arrhythmia). These factors include:

To perform an EP study, thin electrodes are inserted into a vein and guided to your heart to measure its electrical signals. Your doctor may also use the electrodes to stimulate an abnormal heart rhythm and identify its cause. This information will help to determine an appropriate form of treatment.

Why do you need an EP study?

An electrophysiology (EP) study may be recommended to:

  • Check for abnormal electrical signals that may be causing irregular heartbeats.
  • Identify the source of an irregular heartbeat (arrhythmia).
  • Investigate the cause of symptoms such as dizziness, fainting, weakness, or palpitations.
  • Investigate your risk for cardiac arrest.
  • Assess treatment options, which may include catheter ablation, a pacemaker or an implantable cardioverter defibrillator.
  • Evaluate if a prescribed treatment is working.

Who should not undergo an EP study?

An EP study may not be recommended if you:

  • Are pregnant
  • Have problems lying still on your back for an extended period of time

Your doctor will advise if an EP study is the right procedure for you.

What are the risks and complications of an EP study?

An EP study may involve the following risks and complications:

  • Bleeding, bruising or infection where the catheter is inserted into a vein.
  • Blood clots at the end of the catheter(s), which may break off and block a blood vessel. To prevent this, your doctor may give you medicine.

Rarely, infection or damage to the heart or its electrical system may occur.

Note: As any current health condition may affect your risk, be sure to discuss your medical history and any concerns beforehand.

Why choose Mount Elizabeth Hospitals?

Mount Elizabeth Hospitals are well-equipped to offer a wide range of cardiovascular procedures, from diagnostic tests such as EP studies to advanced surgical procedures.

Our experienced cardiologists and cardiac surgeons treat patients from all over the world in Singapore. Together, we are ready to support you throughout your treatment and recovery.

Our cardiologists and neurologists

Mount Elizabeth is home to Asia Pacific's largest concentration of heart specialists. Our multidisciplinary team of heart specialists and neuro doctors will guide you through every stage of your treatment, from diagnostic tests such as EP studies, to surgery and post-recovery.

Please check with your insurance provider for more information, and for their most up-to-date list of panel doctors.

^Specialists may qualify to be on the Extended Panel (EP). You may enjoy selected panel benefits depending on your policy and riders.
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