Electrophysiology

Study

Advanced Testing for Heart Rhythm Disorders at London Heart Group

An electrophysiology study (EPS) is a specialist test used to investigate abnormal heart rhythms (arrhythmias). It allows your cardiologist to understand the electrical activity of your heart in detail and pinpoint the cause of irregular heartbeats.

At London Heart Group, we offer expert EPS testing in London, performed by experienced electrophysiologists using state-of-the-art technology to ensure accurate diagnosis and effective treatment planning.

What Is an Electrophysiology Study?

An EPS is a minimally invasive test where fine, flexible wires (catheters) are passed through a vein—usually in the groin or neck—into your heart. These wires record your heart’s electrical signals from inside and may also be used to stimulate the heart in a controlled way to reproduce an arrhythmia.

The test provides vital information about:

  • The origin and type of abnormal rhythm

  • Whether your arrhythmia is dangerous or benign

  • Whether you would benefit from ablation therapy, a pacemaker, or other treatments

EPS is often performed under local anaesthetic and sedation, and patients usually go home the same day.

Who Might Need an Electrophysiology Study?

Your cardiologist may recommend an EPS if you:

  • Experience unexplained palpitations, dizziness, or blackouts

  • Have a known or suspected arrhythmia (e.g. atrial fibrillation, SVT, VT)

  • Have abnormal results from an ECG, Holter monitor, or event recorder

  • Have a family history of sudden cardiac death

  • Need evaluation before procedures like catheter ablation or ICD (implantable cardioverter defibrillator) implantation

  • Have WPW syndrome, long QT syndrome, or other inherited rhythm disorders

What Does EPS Diagnose?

An EPS can help identify the cause and mechanism of:

It also helps assess risk of future arrhythmias or sudden cardiac arrest, especially in patients with structural heart disease or inherited electrical disorders.

What to Expect During Your EPS Procedure

  • Performed in a specialist cardiac catheter lab

  • You’ll be given a mild sedative to help you relax

  • Local anaesthetic is used at the entry site (usually groin)

  • Thin wires are guided to your heart to record and stimulate electrical signals

  • The test usually takes 1 to 2 hours

  • You’ll be monitored for a short time afterward and can often go home the same day

Is an EPS Safe?

Yes — EPS is a safe and routine test when performed by experienced cardiologists. As with any invasive procedure, there are small risks (bleeding, infection, or arrhythmia provocation), which your doctor will discuss with you in detail before the test.

Why Choose London Heart Group for Your Electrophysiology Study?

At London Heart Group, we offer:

  • Access to leading cardiac electrophysiologists in London

  • Advanced diagnostics and tailored treatment planning

  • On-site echocardiography, Holter monitoring, and cardiac MRI

  • Integrated care and follow-up in a private, patient-focused environment

We provide rapid access to EPS testing in London, with personalised advice and full support throughout your care journey.

Book Your Consultation with London Heart Group

Concerned about heart rhythm symptoms or have been referred for an EPS? Contact London Heart Group to book your consultation with a specialist.

Expert care for complex heart rhythm conditions — your heart is in safe hands.