
24-Hour ECG Monitor (Holter Monitor)
Continuous Heart Rhythm Monitoring
A 24-hour ECG monitor (Holter monitor) continuously records your heart's electrical activity over an extended period, helping detect intermittent rhythm abnormalities that may not be captured during a standard ECG.
Visit our Wigmore Street clinic where we will fit you with this portable device. Wear it for 24 hours while you go about your normal daily activities, providing a comprehensive view of your heart's rhythm throughout the day and night. Return to the clinic after 24 hours to have the device removed and results analyzed.
The test is particularly useful for detecting arrhythmias that come and go, and for assessing symptoms like palpitations, dizziness, or chest pain.
What Is It?
A 24-hour ECG monitor, also known as a Holter monitor, is a portable device that continuously tracks your heart's electrical activity throughout an entire day and night. Unlike a standard ECG which only captures a few seconds, this test records every heartbeat over 24 hours while you go about your normal activities—working, eating, sleeping, and exercising. This extended monitoring helps detect heart rhythm problems that may be intermittent and not present during a brief clinic visit.
Why It's Important
Many heart rhythm irregularities don't occur constantly—they come and go throughout the day, often triggered by specific activities, stress, or sleep. If you experience symptoms like palpitations, dizziness, chest discomfort, or unexplained fatigue that aren't present during a regular ECG, a 24-hour monitor can capture what's actually happening when symptoms occur. This test is crucial for diagnosing intermittent arrhythmias, assessing how your heart responds to daily activities, and determining if concerning symptoms are related to your heart rhythm. It provides the comprehensive picture needed to identify problems that might be missed in a standard ECG.

Frequently Asked Questions
What is Harley Street Medical, and how does it work?
Harley Street Medical is an online platform for booking virtual GP appointments, private doctor consultations, and online GP services. We offer video consultations, private doctor home visits, in-clinic appointments, and virtual doctor consultations.
Who are the doctors at Harley Street Medical?
All private doctors at Harley Street Medical are GMC-registered physicians specializing in virtual GP services and online doctor consultations. Our team provides expert private medical care for virtual GP appointments and home visits.
What do you charge for the services at Harley Street Medical?
At Harley Street Medical, our expert medical professionals and doctors provide GP visits at home, consultations (in-clinic/video), referrals and treatment plans, sick notes, and PCO drivers' medical checks. For more information, call us directly at +44 7770 337581.
How to book a virtual GP appointment or online doctor consultation?
You can book virtual GP appointments, online doctor consultations, or private doctor appointments through our website or call +44 7770 337581. Choose from virtual doctor consultations, private doctor home visits, or in-clinic appointments based on your preferences.
How do virtual doctor consultations and video consultations work?
Our virtual doctor consultations are conducted via secure video call technology. Book your virtual GP appointment online, and our private doctors will connect with you for a comprehensive video consultation. Virtual GP services include visual examination, private treatment plan with prescriptions issuing, and same-day documentation.
What should I do in case of a medical emergency?
Harley Street Medical does not currently provide or should not be opted for during medical emergencies. For medical situations that need quick assistance, we recommend reaching 999 or 111 immediately. Do not seek help from Harley Street Medical for urgent medical problems, whether yours or someone else's.
Do I need to register to use Harley Street Medical services?
Not required. To access our services immediately, you are not required to sign up or register. You can book online or avail of our services directly when needed.
Is my data secure?
Yes, Harley Street Medical takes data security very seriously. We follow strict data protection protocols to ensure the safety of your information.