Validation of a Smartphone-based Recorder for Detection of Cardiac Arrhythmias

Validation of a Smartphone-based Recorder for Detection of Cardiac Arrhythmias

The investigators will evaluate the diagnostic yield of the new AliveCor device versus a 12 lead ECG when used simultaneously to detect cardiac arrhythmia

The investigators are planning to record 250 pre-defined abnormal ECGs (50 each of atrial fibrillation, atrial flutter, pre-excitation, ventricular tachycardia, , supraventricular tachycardia) and 150 control ECGs (100 sinus rhythm, 50 sinus tachycardia) using both the AliveCor Smartphone device and a 12-lead ECG. All 400 ECGs will then be read by 3 blinded reporters - a Consultant Electrophysiologist, a Consultant General Cardiologist and a General Practitioner. The output of the AliveCor automatic detection algorithm will also be recorded as a fourth reporter. The screening characteristics of all 4 reporters using the AliveCor device vs the definitive 12 lead ECG will be analysed and compared.

Inclusion Criteria:

• Male or female patients >18 years
• 12 lead ECG finding of arrhythmia, manifest pre-excitation, pacing rhythm (in the EP lab), sinus rhythm or sinus tachycardia

Exclusion Criteria:

• Age <18 years
• Patients unable to or unwilling to use the device
• Patients with cardiac pacemaker, ICDs, or other implanted electronic devices