When an implantable heart rhythm monitor is recommended

You may need an implantable heart rhythm monitor, also called implantable loop recorder (ILR) for different reasons:

• Because you have unexplained symptoms, like loss or consciousness or palpitations, and your doctor needs an ECG tracing at the time of the symptoms.
• Because you have had a stroke and it is important to know if you do not occasionally have atrial fibrillation, an arrhythmia originating in the heart’s upper chambers which can cause blood clots that can travel to the brain and lead to stroke (for more information on atrial fibrillation, please visit: https://www.afibmatters.org/).
• Rarely it can be implanted after a catheter ablation of arrhythmias to monitor the result.

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FREQUENTLY ASKED QUESTIONS

What is an Implantable Loop Recorder (ILR)?

An ILR is a small device implanted under the skin to monitor and record your heart’s electrical activity. It helps diagnose intermittent arrhythmias that may not appear during standard ECGs or Holter monitoring.

Who might need an ILR?

ILRs are recommended for individuals experiencing unexplained fainting, palpitations, or suspected arrhythmias like atrial fibrillation and can be implanted in patients with a stroke of undetermined source to exclude arrhythmias. They can also be used to monitor atrial fibrillation treatment efficacy.

How does an ILR work?

An ILR continuously records heart activity and stores abnormal rhythms. It can be activated manually if symptoms occur and wirelessly transmits data to your doctor.

What are the benefits of an ILR?

ILRs provide long-term monitoring, enabling doctors to record arrhythmias that may occur sporadically and ensuring accurate diagnosis and treatment.

How long does an ILR stay implanted?

An ILR can monitor your heart for up to 3-4 years. It can be removed or replaced as needed, depending on your condition and diagnosis.

Is living with an ILR difficult?

No, ILRs are minimally invasive and do not interfere significantly with daily activities. Patients should avoid strong magnetic fields and follow their doctor’s instructions for optimal device care.