Medically reviewed by Dr Pinakin V Parekh, General & Interventional Cardiologist (MBBS (Singapore), MRCP (UK), GDFM (Singapore), FAMS (Singapore), FRCP (Glasgow)). Last Updated: 2026, 28 August
Founder & Medical Director of Trident Heart Centre
Dr Pinakin V Parekh is an interventional cardiologist in Singapore with over 20 years of experience in heart care. He specialises in the diagnosis and treatment of heaart diseases, including procedures such as angiogram and angioplasty.
A Holter monitor test is a portable, wearable device that continuously records your heart’s activity over a period of time, usually 24 to 72 hours, or longer if needed. It allows your doctor to monitor your heart as you go about your normal daily routine, helping to capture irregularities that may not show up during a short clinic test.
Your doctor may recommend a Holter monitor if you need a more detailed understanding of your heart rhythm over time. This is especially helpful if your symptoms come and go.
You may benefit from this test if you:
Because it records your heart continuously, a Holter monitor can detect issues that may not appear during a short ECG. These include:
An ECG (electrocardiogram) records your heart activity at a single point in time, usually just a few minutes while you’re in the clinic.
A Holter monitor, on the other hand, records your heart continuously over 1–7 days while you go about your normal routine.
If your symptoms are occasional, a Holter monitor gives a more complete picture and can help your doctor make a more accurate diagnosis.
The duration depends on your symptoms and what your doctor is looking for:
Your doctor will recommend the most appropriate duration to ensure meaningful results.
The device is designed to be simple and comfortable to wear.
Most patients find it easy to adjust to, and it provides reassurance knowing your heart is being monitored continuously.
Small sensors (electrodes) are placed on your chest and connected to a portable recording device. The monitor continuously records your heart’s electrical activity throughout the day and night.
This allows your doctor to correlate any symptoms you feel, such as palpitations or dizziness, with your heart rhythm at that exact moment.
Yes, most modern Holter monitors are waterproof and designed for daily life.
A Holter monitor test is very safe and non-invasive.
Our team will ensure the device is applied comfortably to minimise any discomfort.
The test provides a detailed record of your heart rhythm over time, helping to identify:
Your doctor will explain what the findings mean and how they relate to your symptoms.
If an abnormal rhythm is detected, your doctor will guide you on the next steps to manage your condition and protect your heart health. This may include:
The goal is to give you clarity, reassurance, and a clear plan moving forward.
If you notice any symptoms like palpitations, dizziness, or discomfort, simply take note of the time and what you felt. This helps your doctor match your symptoms with your heart rhythm during the recording.
Yes, you can sleep as usual. The device is lightweight and designed to be worn comfortably, even overnight.
The monitor is small and discreet, and in most cases, it can be worn under your clothing without being noticeable.
If an electrode comes loose, you can gently reattach it. Our team will ensure you know how to reattach it before you leave.
Dr Pinakin uses current, evidence-based methods to carefully evaluate and treat heart conditions, helping you feel confident in your care.
Every patient is treated as an individual, with attention to your full health and lifestyle, not just the heart problem.
From assessment to treatment, screenings and procedures are conveniently coordinated in one place for a smoother, more reassuring experience.
