Insertable Devices to Detect
Slow or Irregular

Cardiac Monitoring
Cardiac Monitoring

Do You Have an
Irregular Heartbeat?

Cardiac monitoring can help your doctor determine if you have an irregular heartbeat and what type. Unlike other methods of monitoring, an insertable cardiac monitor (ICM) can track your heartbeat long-term, if necessary.

What Is an Irregular Heartbeat?

A heart’s rhythm (heartbeat) is normally between 60 to 100 beats per minute. If your heart beats slower or faster than 60 to 100 beats per minute—or has gaps in the rhythm—you may have an irregular heartbeat called an arrhythmia (pronounced uh-RITH-me-uh).

There are four common arrhythmias:

A slow heartbeat of fewer than 60 beats per minute.

A fast heartbeat of more than 100 beats per minute.

A gap in your regular heartbeat, when your heart does not beat for a few seconds.

Atrial Fibrillation (AFib)
A heartbeat that beats chaotically and/or irregularly.

What is an irregular heartbeat?
What is an irregular heartbeat?

What is the Most Common Irregular Heartbeat?

Atrial Fibrillation, or AFib for short, is the most common type of irregular heartbeat. Unlike other types of arrhythmias, you may not always notice symptoms of AFib. This makes an accurate diagnosis even more valuable. Your doctor may suggest cardiac monitoring to help take steps toward a diagnosis.

33.5 million people have Atrial Fibrillation

There Are Several Ways to Monitor Your Heart

Because an irregular heartbeat can come and go, diagnosis can be tricky. While other methods of heart monitoring only record your heartbeat for up to a month, an ICM can monitor continuously for up to 6 years.

Insertable Cardiac Monitor

An ICM—also referred to as a loop recorder—goes under the skin near your heart. The procedure is minimally invasive. The ICM will do all the work for you, and many patients do not even know it is there.

Insertable cardiac monitor
Holter monitor

Holter Monitor

Small patches (electrodes) are placed on your chest and attached to a recording monitor that you carry around. This monitor can record your heartbeat for up to two days.

Event Recorder

This external monitor is attached to your skin and can be worn for up to for 30 days.

External monitor
Smart watch


Fitness wearables and smartwatches may be able to display a short history of your heart rhythm.

Using a wearable may help determine if you should speak to your doctor about more detailed and consistent monitoring with a device such as an ICM.


* Compared to predicate ICM devices.

  1. Chugh SS, Havmoeller R, Narayanan K, et al. Worldwide Epidemiology of Atrial Fibrillation: a Global Burden of Disease 2010 Study. Circulation. 2014;129(8):837-847. doi:10.1161/CIRCULATIONAHA.113.005119
  2. Centers for Disease Control and Prevention. Heart Disease Resources for Health Professionals - Atrial Fibrillation. Updated October 14, 2022. Access February 28, 2023.
  3. American Heart Association. What is Atrial Fibrillation (AFib or AF)?. Updated July 31, 2016. Accessed February 28, 2023.
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