Ĭurrent European guidelines endorse the use of an intracardiac monitor for patients diagnosed with a cryptogenic stroke. Ī twelve-lead Holter monitor is very accurate and can instantly diagnose supraventricular tachycardia (SVT), ventricular tachycardia (VT), atrial flutter, atrial fibrillation, monomorphic or Polymorphic VTs, long QT syndrome, supraventricular premature complexes, ventricular premature complexes, dominant atrioventricular accessory pathways, atrioventricular block, right and left bundle branch block, and left anterior and posterior fascicular block. If symptoms rarely occur, the devices for the longer duration like Implantable loop recorder (ILR) or event monitor can be used. Usually, Cardiologists use the Holter monitor for intermittent symptoms. When symptoms are continuous, a routine twelve-lead electrocardiogram is sufficient to make a diagnosis. Selection of which monitor to use depends on the frequency of symptoms. In contrast, if the purpose is to establish the origin of premature beats/ dysrhythmias or tachycardia, then a twelve-lead Holter electrocardiography is the preferred modality of choice. If it is being used to monitor heart rate and its rhythm then two to three leads are sufficient. The selection between the common two to three lead or the twelve lead Holter ECG monitoring depends mostly on the desired goal. To stratify the risk of sudden cardiac death
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