Background
Some paroxysmal arrhythmias are either too short in duration, or result in symptoms too severe, to allow patients to be able to activate and record an electrocardiogram (ECG) on a portable patient-activated monitor. Non-sustained ventricular tachycardia, sinus pauses and transient high-grade atrioventricular block can be examples of this. Many paroxysmal arrhythmias, however, have a duration of at least a few minutes during which, a patient familiar with the use of a personal ECG-recording device, can activate the device and record an ECG that is of sufficient quality for a cardiologist to review the recording and determine the di
