PhysioBank Archives: Class 3

Class 3 databases include collections of data that may have been less thoroughly studied than those in class 1, but that may be of interest to the research community. These databases include works in progress, to which users are invited to contribute. In some cases, these databases may be archived on their creators' web sites.

The following class 3 databases are currently available:

• AF Termination Challenge Database. This database has been compiled for the PhysioNet/Computers in Cardiology Challenge 2004. It consists of a learning set of 30 records and two test sets of 30 and 20 records. Each record contains a one-minute excerpt of a two-lead long-term ECG recording exhibiting either self-terminating or sustained atrial fibrillation; the challenge is to identify which records in the test set show self-terminating AF.
• Apnea-ECG Database. This database has been assembled for Computers in Cardiology Challenge 2000. It consists of 70 ECG recordings, each typically 8 hours long, with accompanying sleep apnea annotations obtained from study of simultaneously recorded respiration signals, which are included for 8 of the recordings.
• Creighton University Ventricular Tachyarrhythmia Database. This database includes a preliminary set of beat annotations (all beats marked as normal) with additional annotations that indicate episodes of ventricular fibrillation/flutter.
• Electrocardiographic Imaging of Myocardial Infarction. This data set, collected for the Physionet/Computers in Cardiology Challenge 2007, contains 352-channel body surface potential maps for four subjects with moderate to large, relatively compact infarcts, together with MRI images and clinical summaries.
• Examples of Electromyograms. Short EMG recordings from three subjects (one without neuromuscular disease, one with myopathy, one with neuropathy).
• Fantasia Database. ECG and respiration recordings, with beat annotations from 20 young and 20 elderly subjects, all healthy, in sinus rhythm during a resting state (two hours each). Half of the recordings also include (uncalibrated) continuous noninvasive blood pressure signals. A subset of these recordings posted here previously is still available.
• Intracardiac Atrial Fibrillation Database. A collection of high-resolution recordings from eight subjects in atrial fibrillation or flutter; each recording includes three surface ECG signals and five intracardiac signals, all simultaneously recorded.
• Long-Term AF Database. A set of 84 long-term (24-hour) ECG recordings of subjects with paroxysmal or sustained atrial fibrillation. Each record contains two ECG signals and a set of unaudited beat annotations. A subset of records includes manual annotations of the terminations of AF episodes with durations of at least one minute.
• MIMIC Database. The PhysioBank archives contain 72 complete records from this database, together with periodic measurements ("numerics") for all 121 records of the database, including multiple recordings of some of the 90 subjects. The lengths of these records vary, but average about 40 hours each.
• MIMIC II Database, consisting of:
  • The MIMIC II Waveform Database version 3, a collection that includes 21,422 record sets for approximately 12,500 ICU patients. Almost all record sets include a waveform record containing digitized signals (typically including ECG, ABP, respiration, and SpO2, and frequently other signals) and a "numerics" record containing time series of periodic measurements, each presenting a quasi-continuous recording of vital signs of a single patient throughout an ICU stay (typically a few days, but many are several weeks in duration). For ongoing studies, the MIMIC II Waveform Database version 2, containing 4164 records, is still available.
  • The MIMIC II Waveform Database Matched Subset: 4,897 waveform records and 5,266 numerics records from the MIMIC II Waveform Database, which have been matched and time-aligned with 2,809 MIMIC II Clinical Database records; and
  • The MIMIC II Clinical Database, which contains clinical records for 32,536 subjects, including many of those represented in the MIMIC II Waveform Database. MIMIC II Clinical Database records contain results of laboratory tests, medications, ICD9 diagnoses, admitting notes, discharge summaries, and more. Each record contains data for a single subject, and many records span multiple ICU admissions for the same subject, including available medical history between ICU stays. The entire Clinical Database is available to qualified investigators under terms of a data use agreement; see this page for details. The Public Subset of the MIMIC II Clinical Database contains portions of 110 records that were made freely available to support the PhysioNet/CinC Challenge 2009: Predicting Acute Hypotensive Episodes.
  Both components are still growing and additional records are posted as they become available.
• MIT-BIH Atrial Fibrillation Database (including signal files not previously released). Signal files for 23 of the 25 ten-hour records are available, along with reference rhythm annotations and unaudited beat annotations for all 25 records.
• MIT-BIH ECG Compression Test Database. This database is unannotated.
• MIT-BIH Long-Term Database. Six lengthy two-lead ECG recordings and one three-lead ECG recording.
• MIT-BIH Malignant Ventricular Arrhythmia Database. This database contains rhythm and signal quality annotations only (no beat annotations).
• MIT-BIH Normal Sinus Rhythm Database (including signal files not previously released). Also available: recordings excluded from the MIT-BIH Normal Sinus Rhythm Database (because of the presence of occasional ectopic beats).
• MIT-BIH Polysomnographic Database. Includes new annotation files with sleep stage and apnea annotations.
• MIT-BIH ST Change Database. This database includes beat annotations but currently no ST change annotations. The recordings are primarily from exercise stress tests and exhibit transient ST changes.
• MIT-BIH Supraventricular Arrhythmia Database. Seventy-eight half-hour ECG recordings chosen to supplement the examples of SV arrhythmias in the MIT-BIH Arrhythmia Database.
• Non-Invasive Fetal Electrocardiogram Database. Fifty-five recordings of maternal and maternal+fetal ECGs recorded over a 20-week period from a single subject, in EDF+ format.
• PAF Prediction Challenge Database. This database has been compiled for Computers in Cardiology Challenge 2001. It consists of 100 record sets, each including a pair of 30-minute excerpts from a long-term ECG recording. Approximately half of the subjects have PAF immediately following one of the two 30-minute excerpts; among the 50 record sets in the learning set, the PAF can be studied by referring to 5-minute ``continuation records'' that accompany each 30-minute record. In the 50 record sets belonging to the test set, the challenge is to identify which records immediately precede PAF.
• PTB Diagnostic ECG Database. This database of 549 high-resolution 15-lead ECGs (12 standard leads together with Frank XYZ leads) includes clinical summaries for each record. From one to five ECG records are available for each of the 294 subjects.
• Samples of MR Images (magnetic resonance angiography images)
• Sleep-EDF Database. This is a collection of sleep recordings from 8 healthy subjects. Each recording contains 2 EEG signals, EOG, and an event marker, and is accompanied by a manually-scored hypnogram. Four recordings also include submental EMG, and the other four recordings also include the submental EMG envelope, oro-nasal airflow, and body temperature.
• Sleep Heart Health Study Polysomnography Database. This database will eventually include 1000 overnight polysomnograms collected to study the relationship of sleep disordered breathing and cardiovascular disease. Recordings include EEG, EOG, EMG, ECG, nasal airflow and respiratory effort signals, periodic measurements of SaO2 and heart rate, annotations of sleep stages, respiratory events, EEG arousals, and more. At present, one sample polysomnogram is available.
• St. Petersburg Institute of Cardiological Technics 12-lead Arrhythmia Database. Seventy-five half-hour recordings extracted from 32 Holter records from patients undergoing tests for coronary artery disease, with reference annotation files containing over 175,000 beat annotations in all.
• St. Vincent's University Hospital / University College Dublin Sleep Apnea Database. This database contains 25 full overnight polysomnograms with simultaneous three-channel Holter ECG, from adult subjects with suspected sleep-disordered breathing.
• Sudden Cardiac Death Holter Database. This is a collection of long-term ECG recordings of patients who experienced sudden cardiac death during the recordings. Half-hour excerpts of these recordings are available as the MIT-BIH Malignant Ventricular Arrhythmia Database.
• T-Wave Alternans Challenge Database. This database has been compiled for the PhysioNet/Computers in Cardiology Challenge 2008. It contains 100 2-, 3-, and 12-lead ECG records sampled at 500 Hz with 16-bit resolution over a ± 32 mV range, including subjects with risk factors for sudden cardiac death as well as healthy controls and synthetic cases with calibrated amounts of T-wave alternans.