Implantable Loop Recorder
The implantable loop recorder (ILR) can evaluate patients with unexplained symptoms of lightheadedness, dizziness, or episodes of fainting (syncope). The ILR is a small device with internal electrodes that is implanted under the skin, usually in the left side of the centre of the chests. The recorder continuously monitors an individual's heart rhythm on a 24-hour basis. Patients are given a hand held activator to record and store their heart rhythms each time they experience a symptom. This stored information can then be retrieved from the device and reviewed by the physician to help make a diagnosis. The ILR is removed once sufficient information has been retrieved or when the battery is depleted (approximately 1 -- 3 years).
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