About Holter Monitoring (24-Hour ECG)
A Holter monitor is a small, portable ECG recorder that you wear for 24 hours or longer while following your normal routine. It captures irregular heartbeats that may not appear on a short ECG in the clinic.
The recording is analysed by the cardiology team to detect arrhythmias, pauses, or very slow or fast heart rates.
Also known as: 24 hour ECG, ambulatory ECG
Who is it recommended for?
Your doctor may recommend this if you have:
- Palpitations or irregular heartbeat
- Unexplained dizziness or fainting
- Monitoring after a heart attack or pacemaker implantation
- Assessing response to rhythm-control medicines
How is it done at AKG Hospital?
- Fitting Electrodes are placed on the chest and connected to the small recorder.
- Daily routine You continue normal activities and note any symptoms with time in a diary.
- Return The device is returned after the recording period.
- Analysis The cardiologist analyses the full recording and prepares a report.
How to prepare
- Bathe before fitting — the device should not get wet
- Wear a loose top
- Keep a diary of symptoms and activities
Recovery & aftercare
No recovery is needed. Mild skin irritation from electrodes settles quickly.
Benefits
- Detects intermittent rhythm problems
- Painless and done during normal daily life
- Guides need for medicines or pacemaker
Risks & when to seek help
Holter monitoring has no significant risks.
Frequently asked questions
Can I sleep with the Holter monitor?
Yes. Wear it continuously, including during sleep, but avoid bathing.
When will I get results?
Analysis usually takes a short while after the device is returned; your doctor will discuss the report.
This page gives general information to help you understand Holter Monitoring (24-Hour ECG). It does not replace a consultation — your doctor will advise what is right for you.

