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Rhythm care

Event loop recorder (ELR)

Longer-term rhythm recording for symptoms that come and go.

Explore this guide

Why longer monitoring helps

An occasional palpitation or dizzy spell may not occur during a short ECG. An event recorder can help capture the heart rhythm over a longer period and relate it to symptoms.

Using the recorder

The team explains how to wear or use the device, when to activate it and how to keep a symptom diary. Follow the instructions for your particular model.

Practical preparation

Ask about skin care, bathing, exercise and returning the equipment. Record the time and nature of symptoms as instructed, without changing your prescribed medicines unless advised.

Reviewing the recording

Your cardiologist reviews the recordings alongside your symptoms. A recording without an episode may not explain every concern. Severe symptoms require urgent medical care rather than waiting for the monitoring period to end.

Discuss your options

Bring your previous reports and medicine list to a consultation. Ask how this test or procedure would help in your situation, what alternatives are available and what follow-up you may need.

About this guide

General patient information, prepared from practice information and the references below. It does not replace a consultation, diagnosis or your hospital’s instructions.

For a possible medical emergency

New or severe chest pain, severe breathing difficulty or collapse needs immediate emergency care. Call 112 in India. Do not wait for an appointment or a message reply. Do not drive yourself.

Frequently asked questions

Questions about this service.

General answers to support your discussion with the treating team.

Have another question?

Further reading: NHS: heart rhythm problems

Why might I need an event recorder?

It can help record intermittent symptoms that may not occur during a short ECG. Your clinician selects monitoring to suit the pattern of episodes.

Can I bathe or exercise while using it?

Follow the instructions for your particular device. Ask the team about water, skin care, activity and returning the equipment before taking it home.

What if I become very unwell during monitoring?

Seek urgent medical help for severe symptoms. Recording an episode is not a substitute for emergency care, and you should not wait for monitoring to finish.

Take the next step

A conversation about
your heart health.

Arrange a consultation to understand your symptoms, discuss your reports and plan your next steps.

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