A guide for parents
Having an ECG
Before, during and after
Follow your own hospital team’s instructions about medicines and eating or drinking; these can be different for each child.
- Before
- Explain that small stickers will record the heart’s electrical signals.
- During
- Sensors are placed on the skin while your child rests still.
- After
- Staff remove the stickers. Ask when you’ll hear about the results.
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What the test tells the team

An electrocardiogram, usually called an ECG, records the heart’s electrical activity. It helps the doctor check how fast the heart beats and whether the beats follow a regular pattern. It is different from an echo, which makes moving pictures of the heart. An ECG may not answer every question. The team looks at it together with your child’s examination and other test results.
02
What happens next
What your child may notice
A member of staff places small sticky sensors on the skin and connects them to a recording machine. Your child is asked to lie still so movement does not interfere with the recording. The machine reads signals rather than sending a shock into the body. The test is generally quick and painless. Removing the stickers may feel uncomfortable.
The skin may be sore or itchy for a short time.
Preparing for the visit
Ask staff to show a spare sticker first if that would help. Tell staff if sticky plasters irritate your child’s skin. Explain if touch, noise or showing their chest worries them. Clothing that opens easily may make the visit simpler. Follow the appointment letter and ask whether other tests are booked on the same day.
Before leaving, ask who will read the recording and when you should get the result. Check who to contact if you do not hear back.
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Questions to ask
Save the questions you want to take to your next appointment. You can edit them in your Journal.
- What are you hoping to find out from this ECG, and how will it help with our child’s care?
- Will our child have any other tests today, and what should we expect during the visit?
- When will the ECG result be available, and who will explain it and any next steps to us?
Sources and review
Sources checked 9 October 2026. Independent clinical review pending.
- Great Ormond Street Hospital: Your child is having an electrocardiogram
Accessed 9 October 2026
