Wireless Handheld 8-lead ECG Device Performance in Heart Patients (Rapid Rhythm)

"We want to explore whether using 6 electrodes on the chest (as in the Rapid Rhythm Handheld 8-lead ECG device) can give the same diagnostic result to the standard 10 electrode (12-lead) ECG, which uses 6 chest electrodes plus 4 electrodes on the arms and legs.~To do this we need to compare measurements taken with the 6 electrode (8 lead) study device to those taken with the gold-standard 10 electrode (12 lead) method.~We want to find out whether the new equipment can detect the same heart rhythms as the standard method, so that ECG measurements might be made more quickly and easily in the future."