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What is a Holter Monitor?

Holter Monitors

A Holter monitor is a battery-operated device designed specifically to measure and record the activity of the heart (ECG). Once implemented, the monitor reads the heart’s activity for 24 to 48 hours – sometimes longer depending on the type of monitoring required. The device is typically the size of a small digital camera, with wires and electrodes that attach to the skin.


There are a few reasons why your doctor may require a Holter monitor. For instance, if you experience slow, fast, or irregular heartbeats, a monitor may help determine the cause of the problem. Or, your doctor may choose to see how different medicines work to treat heart-related problems.

Furthermore, if you wear a pacemaker, a Holter monitor may help determine whether the pacemaker is working as intended or not. You should know, the monitor has no adverse effects and is not painful to attach or wear.

Lastly, the results may help determine whether you require further tests or medications to help treat a heart condition.

What to Expect with Holter Monitors

First and foremost, a specially-trained technician will attach the monitor and its nodes. You’ll then be instructed on how to record any symptoms while wearing the device.

  • The technician will first attach all electrodes to your chest. If you have a lot of hair, you may be shaved to ensure the nodes attach firmly.
  • The monitor itself can be carried in a pocket or pouch, or even slung across the shoulder like a camera.
  • Perform all regular activities while wearing the monitor, except for bathing, showering, X-rays, or moving through metal detectors.

Contact Us

For a consultation appointment, contact Brookhaven Heart by calling 631-654-3278. Our experienced technicians can walk you through any heart treatment you require and answer all questions promptly and professionally. Never compromise when it comes to the health of your heart!