Arrhythmia database for algorithm testing: surface leads plus intracardiac leads for validation

Abstract 

Ann Arbor Electrogram Libraries (AAEL) is a database of over 500 electrocardiographic recordings made during clinical electrophysiology studies over a period of 15 years. These data are used by university researchers and cardiac device research and development laboratories to develop and test arrhythmia detection algorithms. The AAEL library is in use by all major implantable cardioverter defibrillator manufacturers as well as several Automated External Defibrillator developers. In 1996, the USFDA Center for Devices and Radiological Health licensed a portion of Volumes I for proposed device testing. The data consist of 7 channels of signals: surface leads I, III, V1, an intra-atrial high right atrium (bipolar), an intra-atrial high right atrium (unipolar), an intraventricular right ventricular apex (bipolar), and intraventricular right ventricular apex (unipolar) from the distal catheter electrode. Data were recorded under careful engineering quality control continuously (30 min - 1.5 hr) on FM magnetic tape at a tape speed of 3.75 in/s after signal amplification at a filter setting of 1–500 Hz. Amplifier gain and filter settings were held constant during the entire recording procedure and a 1 mV calibration signal was entered as a reference at the time of recording. All patient recordings contain a baseline sinus rhythm, and subsequently induced ventricular tachycardia and/or ventricular fibrillation, or less frequently, supraventricular tachycardia, atrial tachycardia, and/or atrial fibrillation. Data are typically made available in digitized format (1,000 Hz); digital or FM recordings are also available. AAEL recordings are the only widespread intracardiac test files in the industry.

Keywords:  Arrythmia database, intracardiac leads, implantable defibrillators