What Is a
Holter Monitor?
A Holter monitor is a small, battery-powered ECG recorder connected to sticky electrodes on your chest. You wear it for 24 hours to 7 days during your normal routine, and it records your heart rhythm continuously. A cardiologist then analyses the recording to find irregular, too fast or too slow heartbeats that a 10-second ECG in the clinic may miss.
A standard ECG captures only about ten seconds of heart rhythm. Many rhythm problems come and go, so the ECG is often normal by the time you see the doctor. A Holter monitor solves this by recording around 100,000 heartbeats a day while you work, walk, eat and sleep.
The recorder is about the size of a mobile phone and clips to a belt or hangs from a strap. Thin wires connect it to a few small electrode stickers on the chest. You press nothing and feel nothing — you simply note any symptoms and their time in a diary.
At KG Heart Center, Holter monitoring is part of the cardiology diagnostic service, offered for 24 hours up to 7 days and interpreted by the cardiology and electrophysiology team.
- Painless, no needles
- Fitting takes 10–15 minutes
- Wear 24 hours to 7 days
- Keep your normal routine
- Symptom diary included
- Analysed by cardiologists
When Is a Holter
Test Recommended?
ECG vs Holter vs
Longer-Term Monitors
| Factor | Standard ECG | Holter Monitor | Longer-Term Monitors |
|---|---|---|---|
| Recording time | About 10 seconds | 24 hours to 7 days | Weeks to years |
| Where it’s done | In the clinic | At home, during daily life | Worn patch or implanted device |
| Best for | Ongoing rhythm problems | Symptoms daily to weekly | Rare symptoms or unexplained fainting |
| What you do | Lie still briefly | Normal routine + diary | Record or transmit symptoms |
If symptoms are rare and a Holter is normal, your cardiologist may discuss longer-term monitoring options.
Holter Test —
Step by Step
Before you come
Have a bath or shower, because you cannot get the recorder wet while wearing it. Avoid body lotion on the chest and wear a loose, button-front top. Continue your usual medicines unless told otherwise.
Fitting the monitor
The skin is cleaned (and a little chest hair may be clipped), electrode stickers are placed on the chest, and the leads are connected to the recorder. Fitting takes about 10–15 minutes.
Your normal routine
Go home and carry on with work, walking, meals and sleep as usual. Being active helps capture the symptoms your doctor wants to see.
Keep a symptom diary
Write down the time and what you were doing whenever you feel palpitations, dizziness, chest discomfort or breathlessness, as well as when you take medicines, exercise and sleep.
Returning the device
Return the monitor and diary at the end of the recording. The data is downloaded and analysed, and a cardiologist reviews the findings with you.
Do’s and Don’ts
While Wearing a Holter
Some people get mild itching or redness where the stickers sit; this settles after they are removed.
Holter Results
& What Happens Next
A Holter report summarises your lowest, average and highest heart rate, any pauses, how many extra beats occurred, episodes of atrial fibrillation, SVT or ventricular tachycardia, and any changes suggesting reduced blood supply. Most importantly, it shows what your rhythm was doing at the exact moments you recorded symptoms.
A normal recording during typical symptoms is also useful: it can reassure you that the symptoms are not caused by a dangerous rhythm. If an abnormal rhythm is found, the next step may be medicines, an echocardiogram, an EP study and ablation, or a pacemaker or ICD — all available at KG Hospital.
Holter Test Cost
in Coimbatore
The cost depends mainly on how long the recording lasts — a 24-hour Holter costs less than a 48–72-hour or 7-day recording. Please call 0422-4042121 for current prices and appointments.
When a Holter is part of a hospital admission, it is usually covered by insurance. KG Hospital is empanelled with 50+ insurers and TPAs and with CMCHIS, PM-JAY, ESI, CGHS and ECHS. Insurance & cashless details → For a full heart screening, see our health checkup packages.
Cardiologists
at KG Heart Center
KG Heart Center is part of KG Hospital, founded in 1974 by Padma Shri awardee Dr G. Bakthavathsalam, and accredited by NABH.
About this page. Written by the KG Heart Center cardiology team, KG Hospital, Coimbatore. Clinical information is consistent with the guidelines listed below. Last updated: .
References
- 2017 ISHNE-HRS Expert Consensus Statement on Ambulatory ECG and External Cardiac Monitoring/Telemetry — International Society for Holter and Noninvasive Electrocardiology / Heart Rhythm Society.
- 2018 ESC Guidelines for the diagnosis and management of syncope — European Society of Cardiology.
- 2024 ESC Guidelines for the management of atrial fibrillation — European Society of Cardiology (key points summary).