Implantable Loop Recorders (ILRs) in Children

Implantable loop recorders (ILR) are small event monitors implanted under the skin that are battery-powered and can stay in place for ~ three years. ILRs allow for long-term monitoring of your heart rhythm. ILRs can automatically detect arrhythmias based and have a patient-activated recorder for symptomatic episodes.  

Implantable recorders communicate wirelessly with the recording-activating button and with the special home monitoring system that transmits information about your child’s rhythm back to your healthcare team. These transmissions can be scheduled automatically or can be initiated by families when a symptomatic event has been recorded. The information on the device can also be read in your cardiologist's office. 


Implantable loop recorders can be used for detection of an abnormal rhythm. It can be used for monitoring in patients:

  • with clinical syndromes or situations which increased risk of cardiac arrhythmias.
  • who experience infrequent symptoms such as dizziness, palpitations, fainting, and chest pain that may suggest a cardiac arrhythmia.

On the Inside

Your cardiologist or electrophysiologist places the small device under your skin, on your chest wall, overlying the heart. They may be placed with local anesthesia, conscious sedation, or general anesthesia depending on the age of the child. Most patients go home a few hours after the procedure.

Lifestyle Changes

Once the small incision is completely healed (one to two weeks), the implanted monitor does not prevent you from participation in routine activities or sports, however, your cardiologists may restrict your activities based on your diagnosis. You should discuss activity participation with your cardiologist.


Keep Exploring

Heart Rhythm Disorders
Millions of people experience irregular or abnormal heartbeats, called arrhythmias, at some point in their lives. Most of the time, they are harmless and happen in healthy people free of heart disease. However, some abnormal heart rhythms can be serious or even deadly. Having other types of heart disease can also increase the risk of arrhythmias.
Pediatrics and Congenital Heart Disease (CHD)
This section is for pediatric patients and families living with heart rhythm disorders and heart rhythm disorders related to congenital heart disease (CHD).
Early Warning Signs
If you are experiencing a racing, pounding, rumbling or flopping feeling in your chest or if you have been fainting, having repeated dizzy spells, feeling lightheaded or you are extremely fatigued, it's time to see a doctor to discuss your heart health.
Common Treatments
Learning about the underlying cause of any heart rhythm disorder provides the basis for selecting the best treatment plan. Information and knowledge about care options, and their risks and benefits help you work with your health care provider to make the best choices.
Since other heart disorders increase the risk of developing abnormal heart rhythms, lifestyle changes often are recommended. Living a “heart healthy” lifestyle can ease the symptoms experienced with heart rhythm disorders and other heart disorders, and can be beneficial to overall patient health.
The Normal Heart
The heart is a fist-sized muscle that pumps blood through the body 24 hours a day, 365 days a year, without rest. The normal heart is made up of four parts: two atria on the top of the heart (right atrium and left atrium), and two ventricles (right ventricle and left ventricle) which are the muscular chambers on the bottom of the heart that provide the major power to pump blood.