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KMID : 1011920150160030147
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International Journal of Arrhythmia
2015 Volume.16 No. 3 p.147 ~ p.153
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Clinical Usefulness of Implantable Loop Recorder
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Park Seung-Jung
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Abstract
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Initially, an implantable loop recorder (ILR) was introduced to find the cause of unexplained syncope, palpitation, and dizziness. It is now considered as a test of choice when repeated Holter recordings, more-prolonged external event loop recordings, head-up tilt test, or electrophysiological study fails to reveal the cause of recurrent syncope. However, with the help of technical advancement such as automated QRS morphology analysis, auto-adjusting sensing threshold, improved noise rejection, increased battery longevity, and remote monitoring function, the ILR has begun to play an important role in the diagnosis of life-threatening ventricular tachyarrhythmias as well. In addition, ILR monitoring shows clear usefulness in detecting atrial fibrillations after cryptogenic stroke, in differentiating true syncope from epilepsy, and in assessing the recurrence rate of atrial fibrillation after radiofrequency ablation. Overall, a smarter ILR will make possible earlier diagnosis, enhance diagnostic accuracy, and improve quality of life of patients with unexplained syncope, palpitation, non-syncopal transient loss of consciousness, and stroke.
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KEYWORD
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Syncope, Atrial Fibrillation, Ventricular Tachycardia, Stroke
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