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Electrophysiology studies

Cardiac mapping

Mapping the electrical activity of the heart to find the source of arrhythmia and determine the best treatment

About

If you have a fast or irregular heartbeat (arrhythmia), electrophysiology studies can find out where it's coming from. This can then help you and your consultant decide on the most appropriate form of treatment.

Need to know

  • What happens icon plus

    The procedure takes about an hour. You’ll be given a local anaesthetic to numb your groin as this is where the catheter goes. You may also be given a light sedative. To begin the procedure, your consultant will insert a small, flexible tube into a vein at the top of your leg. They will feed very fine wires (catheters) through the tube and guide them to your heart. Your consultant will then send electrical pulses through the wires to make your heart beat at different speeds. The wires will pick up the electrical signals produced by your heart in response and from this, your consultant should be able to locate the arrhythmia.
  • How to prepare icon plus

    Your consultant will tell you how to prepare. It’s important to let us know if you’re taking any medication as you may need to stop taking it before your test or procedure. You’ll be asked to stop eating and drinking a few hours beforehand. Like all tests and procedures, there may be some risks and side effects involved. Your consultant will explain these to you and answer any questions you have.
  • Afterwards icon plus

    You should be able to go home on the day of your procedure. Please arrange for someone to travel home with you. You should rest for three to four days after the procedure to allow time for the top of your leg to heal. Your consultant will discuss your results with you, and let you know when you can get back to your usual routines and activities. They’ll also give you advice on medication, exercise, travel, diet and alcohol.

Our facilities

From complex surgery to straightforward procedures, we provide exceptional care across our network of hospitals, outpatient centres and specialist clinics.

  • facility-HSC-flag-hero-582x582

    The Harley Street Clinic

    35 Weymouth Street

    London

    W1G 8BJ

    Appointments 020 7034 8181
    Enquiries 020 3131 7962

  • London Bridge Hospital Facility

    London Bridge Hospital

    27 Tooley Street

    London

    SE1 2PR

    Appointments and Enquiries 020 7234 2009
    Imaging Appointments 020 7234 2773
    Switchboard 020 7407 3100

  • Wellington-south-hero-facility-582-582

    The Wellington Hospital

    Wellington Place

    London NW8 9LE

    Appointments 0207 483 5148
    Enquiries 020 3131 7478

Request an appointment

We're happy to help you make an appointment with one of our experienced consultants.

This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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