Implantable loop recorder
Some arrhythmias such as syncope (blackouts or fainting) are intermittent, making it difficult to detect them with ECG or 24-hour monitoring. In these cases, a clinician might consider an implantable loop recorder (ILR).
An ILR is used to monitor heart rhythms for months at a time if the symptomatic episodes are less frequent than every 30 days. The device can remain in place for up to three years.
An ILR is a thin device that is inserted just beneath the skin in the chest area. Once implanted, an ILR can determine whether fainting is related to a heart rhythm problem.
