Use of downloaded data from this database is permitted for research and not for commercial use (i.e., testing commercial equipment for quality assessment according to ANSI-AAMI recommendations or other standards).
For commercial use, obtain the European ST-T Database CD-ROM (write to Alessandro Taddei <taddei@ftgm.it> for further information).
This database is described in
Please cite this publication when referencing this material, and also include the standard citation for PhysioNet:
The European ST-T Database is intended to be used for evaluation of algorithms for analysis of ST and T-wave changes. This database consists of 90 annotated excerpts of ambulatory ECG recordings from 79 subjects. The subjects were 70 men aged 30 to 84, and 8 women aged 55 to 71. (Information is missing for one subject. Records e0118-e0122 come from the same subject; also records e0123-e0126, records e0129 and e0133, records e0136 and e0139, records e0147 and e0148, records e0154 and e0155, and records e0162 and e0163.) Myocardial ischemia was diagnosed or suspected for each subject (see reference 1); additional selection criteria were established in order to obtain a representative selection of ECG abnormalities in the database, including baseline ST segment displacement resulting from conditions such as hypertension, ventricular dyskinesia, and effects of medication. The database includes 367 episodes of ST segment change, and 401 episodes of T-wave change, with durations ranging from 30 seconds to several minutes, and peak displacements ranging from 100 microvolts to more than one millivolt. In addition, 11 episodes of axis shift resulting in apparent ST change, and 10 episodes of axis shift resulting in apparent T-wave change, have been marked. Compact clinical reports document each record. These reports, contained within the header (.hea) files associated with each record, summarize pathology, medications, electrolyte imbalance, and techical information about each recording.
Each record is two hours in duration and contains two signals, each sampled at 250 samples per second with 12-bit resolution over a nominal 20 millivolt input range. The sample values were rescaled after digitization with reference to calibration signals in the original analog recordings, in order to obtain a uniform scale of 200 ADC units per millivolt for all signals. (The calibration signals are not included in the signal files.) The header files include information about the leads used, the patient's age, sex, and medications, the clinical findings, and the recording equipment. Each of the signal files is 5,400,000 bytes long.
Two cardiologists worked independently to annotate each record beat-by-beat and for changes in ST segment and T-wave morphology, rhythm, and signal quality. ST segment and T-wave changes were identified in both leads (using predefined criteria which were applied uniformily in all cases), and their onsets, extrema, and ends were annotated. Annotations made by the two cardiologists were compared, disagreements were resolved by the coordinating group in Pisa (see reference 3), and the reference annotation files were prepared; altogether, these files contain 802,866 annotations. A detailed description of the annotations may be found here.
Over half (48 of 90 complete records, and reference annotation files for all records) of this database was contributed to PhysioNet in 2000, and the remainder was contributed in November 2009. A list of all 90 record names is available here.
Acknowledgements
We thank Carlo Marchesi, Alessandro Taddei, and Michele Emdin of the CNR Institute for Clinical Physiology in Pisa for arranging for these recordings to be made available via PhysioNet. Our thanks also to Maarten L. Simoons, Simon Meij, and Johan H.C. Reiber, and to the European Society of Cardiology and its Working Group "Computers in Cardiology", for their support.
Completion of the European ST-T Database was made possible by the European Society of Cardiology. We also thank the many contributors whose efforts supported the creation of the Database.
Additional References
- Taddei, A., Benassi, A., Biagini, A., Bongiorni, M.G., Contini, C., Distante, G., Landucci, L., Mazzei, M.G., Pisani, P., Roggero, N., Varanini, M., Marchesi, C. ST-T change analysis in ECG ambulatory monitoring: a European standard for performance evaluation. Computers in Cardiology 14:63-68 (1987).
- Marchesi, C. The European Community concerted action on Ambulatory Monitoring. Journal of Med. Eng. and Techn. 10:131-134 (1986).
- Taddei, A., Biagini, A., Distante, G., Marchesi, C., Mazzei, M.G., Pisani, P., Roggero, N., Zeelenberg, C. An annotated database aimed at performance evaluation of algorithms for ST-T change analysis. Computers in Cardiology 16:117-120 (1989).
- ANSI-AAMI EC38:1998 [American National Standard]. Ambulatory electrocardiographs. Association for the Advancement of Medical Instrumentation, 3330 Washington Boulevard, Suite 400, Arlington, VA 22201-4598, USA (1998).
- ANSI-AAMI EC57:1998 [American National Standard]. Testing and reporting performance results of cardiac rhythm and ST segment measurement algorithms. Association for the Advancement of Medical Instrumentation, 3330 Washington Boulevard, Suite 400, Arlington, VA 22201-4598, USA (1998).
Name Last modified Size Description
Parent Directory - e0103.atr 10-May-1991 06:00 15K reference annotations e0103.dat 10-May-1991 06:00 5.1M digitized signal(s) e0103.hea 10-May-1991 06:00 213 header file e0104.atr 10-May-1991 06:00 16K reference annotations e0104.dat 10-May-1991 06:00 5.1M digitized signal(s) e0104.hea 10-May-1991 06:00 253 header file e0105.atr 10-May-1991 06:00 14K reference annotations e0105.dat 10-May-1991 06:00 5.1M digitized signal(s) e0105.hea 10-May-1991 06:00 231 header file e0106.atr 10-May-1991 06:00 15K reference annotations e0106.dat 10-May-1991 06:00 5.1M digitized signal(s) e0106.hea 10-May-1991 06:00 232 header file e0107.atr 10-May-1991 06:00 15K reference annotations e0107.dat 10-May-1991 06:00 5.1M digitized signal(s) e0107.hea 10-May-1991 06:00 223 header file e0108.atr 10-May-1991 06:00 14K reference annotations e0108.dat 10-May-1991 06:00 5.1M digitized signal(s) e0108.hea 10-May-1991 06:00 240 header file e0110.atr 10-May-1991 06:00 14K reference annotations e0110.dat 10-May-1991 06:00 5.1M digitized signal(s) e0110.hea 10-May-1991 06:00 234 header file e0111.atr 10-May-1991 06:00 15K reference annotations e0111.dat 10-May-1991 06:00 5.1M digitized signal(s) e0111.hea 10-May-1991 06:00 191 header file e0112.atr 10-May-1991 06:00 12K reference annotations e0112.dat 10-May-1991 06:00 5.1M digitized signal(s) e0112.hea 10-May-1991 06:00 251 header file e0113.atr 10-May-1991 06:00 19K reference annotations e0113.dat 10-May-1991 06:00 5.1M digitized signal(s) e0113.hea 10-May-1991 06:00 219 header file e0114.atr 10-May-1991 06:00 12K reference annotations e0114.dat 10-May-1991 06:00 5.1M digitized signal(s) e0114.hea 10-May-1991 06:00 244 header file e0115.atr 10-May-1991 06:00 22K reference annotations e0115.dat 10-May-1991 06:00 5.1M digitized signal(s) e0115.hea 10-May-1991 06:00 182 header file e0116.atr 10-May-1991 06:00 9.4K reference annotations e0116.dat 10-May-1991 06:00 5.1M digitized signal(s) e0116.hea 10-May-1991 06:00 217 header file e0118.atr 10-May-1991 06:00 15K reference annotations e0118.dat 10-May-1991 06:00 5.1M digitized signal(s) e0118.hea 10-May-1991 06:00 229 header file e0119.atr 10-May-1991 06:00 17K reference annotations e0119.dat 10-May-1991 06:00 5.1M digitized signal(s) e0119.hea 10-May-1991 06:00 229 header file e0121.atr 10-May-1991 06:00 21K reference annotations e0121.dat 10-May-1991 06:00 5.1M digitized signal(s) e0121.hea 10-May-1991 06:00 231 header file e0122.atr 10-May-1991 06:00 23K reference annotations e0122.dat 10-May-1991 06:00 5.1M digitized signal(s) e0122.hea 10-May-1991 06:00 231 header file e0123.atr 10-May-1991 06:00 18K reference annotations e0123.dat 10-May-1991 06:00 5.1M digitized signal(s) e0123.hea 10-May-1991 06:00 279 header file e0124.atr 10-May-1991 06:00 19K reference annotations e0124.dat 10-May-1991 06:00 5.1M digitized signal(s) e0124.hea 10-May-1991 06:00 280 header file e0125.atr 10-May-1991 06:00 18K reference annotations e0125.dat 10-May-1991 06:00 5.1M digitized signal(s) e0125.hea 10-May-1991 06:00 280 header file e0126.atr 10-May-1991 06:00 16K reference annotations e0126.dat 10-May-1991 06:00 5.1M digitized signal(s) e0126.hea 10-May-1991 06:00 281 header file e0127.atr 10-May-1991 06:00 19K reference annotations e0127.dat 10-May-1991 06:00 5.1M digitized signal(s) e0127.hea 10-May-1991 06:00 184 header file e0129.atr 10-May-1991 06:00 12K reference annotations e0129.dat 10-May-1991 06:00 5.1M digitized signal(s) e0129.hea 10-May-1991 06:00 228 header file e0133.atr 10-May-1991 06:00 13K reference annotations e0133.dat 10-May-1991 06:00 5.1M digitized signal(s) e0133.hea 10-May-1991 06:00 218 header file e0136.atr 10-May-1991 06:00 14K reference annotations e0136.dat 10-May-1991 06:00 5.1M digitized signal(s) e0136.hea 10-May-1991 06:00 213 header file e0139.atr 10-May-1991 06:00 21K reference annotations e0139.dat 10-May-1991 06:00 5.1M digitized signal(s) e0139.hea 10-May-1991 06:00 215 header file e0147.atr 10-May-1991 06:00 13K reference annotations e0147.dat 10-May-1991 06:00 5.1M digitized signal(s) e0147.hea 10-May-1991 06:00 237 header file e0148.atr 10-May-1991 06:00 14K reference annotations e0148.dat 10-May-1991 06:00 5.1M digitized signal(s) e0148.hea 10-May-1991 06:00 236 header file e0151.atr 10-May-1991 06:00 15K reference annotations e0151.dat 10-May-1991 06:00 5.1M digitized signal(s) e0151.hea 10-May-1991 06:00 224 header file e0154.atr 10-May-1991 06:00 13K reference annotations e0154.dat 10-May-1991 06:00 5.1M digitized signal(s) e0154.hea 10-May-1991 06:00 215 header file e0155.atr 10-May-1991 06:00 17K reference annotations e0155.dat 10-May-1991 06:00 5.1M digitized signal(s) e0155.hea 10-May-1991 06:00 217 header file e0159.atr 10-May-1991 06:00 19K reference annotations e0159.dat 10-May-1991 06:00 5.1M digitized signal(s) e0159.hea 10-May-1991 06:00 206 header file e0161.atr 10-May-1991 06:00 18K reference annotations e0161.dat 10-May-1991 06:00 5.1M digitized signal(s) e0161.hea 10-May-1991 06:00 178 header file e0162.atr 10-May-1991 06:00 21K reference annotations e0162.dat 10-May-1991 06:00 5.1M digitized signal(s) e0162.hea 10-May-1991 06:00 221 header file e0163.atr 10-May-1991 06:00 15K reference annotations e0163.dat 10-May-1991 06:00 5.1M digitized signal(s) e0163.hea 10-May-1991 06:00 221 header file e0166.atr 10-May-1991 06:00 13K reference annotations e0166.dat 10-May-1991 06:00 5.1M digitized signal(s) e0166.hea 10-May-1991 06:00 194 header file e0170.atr 10-May-1991 06:00 18K reference annotations e0170.dat 10-May-1991 06:00 5.1M digitized signal(s) e0170.hea 10-May-1991 06:00 184 header file e0202.atr 10-May-1991 06:00 20K reference annotations e0202.dat 10-May-1991 06:00 5.1M digitized signal(s) e0202.hea 10-May-1991 06:00 171 header file e0203.atr 10-May-1991 06:00 20K reference annotations e0203.dat 10-May-1991 06:00 5.1M digitized signal(s) e0203.hea 10-May-1991 06:00 200 header file e0204.atr 10-May-1991 06:00 23K reference annotations e0204.dat 10-May-1991 06:00 5.1M digitized signal(s) e0205.atr 10-May-1991 06:00 24K reference annotations e0205.dat 10-May-1991 06:00 5.1M digitized signal(s) e0205.hea 10-May-1991 06:00 177 header file e0206.atr 10-May-1991 06:00 22K reference annotations e0206.dat 10-May-1991 06:00 5.1M digitized signal(s) e0206.hea 10-May-1991 06:00 172 header file e0207.atr 10-May-1991 06:00 14K reference annotations e0207.dat 10-May-1991 06:00 5.1M digitized signal(s) e0207.hea 10-May-1991 06:00 179 header file e0208.atr 10-May-1991 06:00 18K reference annotations e0208.dat 10-May-1991 06:00 5.1M digitized signal(s) e0208.hea 10-May-1991 06:00 180 header file e0210.atr 10-May-1991 06:00 17K reference annotations e0210.dat 10-May-1991 06:00 5.1M digitized signal(s) e0210.hea 10-May-1991 06:00 172 header file e0211.atr 10-May-1991 06:00 30K reference annotations e0211.dat 10-May-1991 06:00 5.1M digitized signal(s) e0211.hea 10-May-1991 06:00 181 header file e0212.atr 10-May-1991 06:00 22K reference annotations e0212.dat 10-May-1991 06:00 5.1M digitized signal(s) e0212.hea 10-May-1991 06:00 166 header file e0213.atr 10-May-1991 06:00 22K reference annotations e0213.dat 10-May-1991 06:00 5.1M digitized signal(s) e0213.hea 10-May-1991 06:00 173 header file e0302.atr 10-May-1991 06:00 21K reference annotations e0302.dat 10-May-1991 06:00 5.1M digitized signal(s) e0302.hea 10-May-1991 06:00 268 header file e0303.atr 10-May-1991 06:00 18K reference annotations e0303.dat 10-May-1991 06:00 5.1M digitized signal(s) e0303.hea 10-May-1991 06:00 265 header file e0304.atr 10-May-1991 06:00 17K reference annotations e0304.dat 10-May-1991 06:00 5.1M digitized signal(s) e0304.hea 10-May-1991 06:00 223 header file e0305.atr 10-May-1991 06:00 19K reference annotations e0305.dat 10-May-1991 06:00 5.1M digitized signal(s) e0305.hea 10-May-1991 06:00 252 header file e0306.atr 10-May-1991 06:00 16K reference annotations e0306.dat 10-May-1991 06:00 5.1M digitized signal(s) e0306.hea 10-May-1991 06:00 205 header file e0403.atr 10-May-1991 06:00 18K reference annotations e0403.dat 10-May-1991 06:00 5.1M digitized signal(s) e0403.hea 10-May-1991 06:00 189 header file e0404.atr 10-May-1991 06:00 14K reference annotations e0404.dat 10-May-1991 06:00 5.1M digitized signal(s) e0404.hea 10-May-1991 06:00 209 header file e0405.atr 10-May-1991 06:00 23K reference annotations e0405.dat 10-May-1991 06:00 5.1M digitized signal(s) e0405.hea 10-May-1991 06:00 185 header file e0406.atr 10-May-1991 06:00 18K reference annotations e0406.dat 10-May-1991 06:00 5.1M digitized signal(s) e0406.hea 10-May-1991 06:00 240 header file e0408.atr 10-May-1991 06:00 18K reference annotations e0408.dat 10-May-1991 06:00 5.1M digitized signal(s) e0408.hea 10-May-1991 06:00 234 header file e0409.atr 10-May-1991 06:00 25K reference annotations e0409.dat 10-May-1991 06:00 5.1M digitized signal(s) e0409.hea 10-May-1991 06:00 255 header file e0410.atr 10-May-1991 06:00 15K reference annotations e0410.dat 10-May-1991 06:00 5.1M digitized signal(s) e0410.hea 10-May-1991 06:00 214 header file e0411.atr 10-May-1991 06:00 20K reference annotations e0411.dat 10-May-1991 06:00 5.1M digitized signal(s) e0411.hea 10-May-1991 06:00 182 header file e0413.atr 10-May-1991 06:00 16K reference annotations e0413.dat 10-May-1991 06:00 5.1M digitized signal(s) e0413.hea 10-May-1991 06:00 158 header file e0415.atr 10-May-1991 06:00 24K reference annotations e0415.dat 10-May-1991 06:00 5.1M digitized signal(s) e0415.hea 10-May-1991 06:00 159 header file e0417.atr 10-May-1991 06:00 18K reference annotations e0417.dat 10-May-1991 06:00 5.1M digitized signal(s) e0417.hea 10-May-1991 06:00 178 header file e0418.atr 10-May-1991 06:00 23K reference annotations e0418.dat 10-May-1991 06:00 5.1M digitized signal(s) e0418.hea 10-May-1991 06:00 138 header file e0501.atr 10-May-1991 06:00 16K reference annotations e0501.dat 10-May-1991 06:00 5.1M digitized signal(s) e0501.hea 10-May-1991 06:00 141 header file e0509.atr 10-May-1991 06:00 16K reference annotations e0509.dat 10-May-1991 06:00 5.1M digitized signal(s) e0509.hea 10-May-1991 06:00 213 header file e0515.atr 10-May-1991 06:00 22K reference annotations e0515.dat 10-May-1991 06:00 5.1M digitized signal(s) e0515.hea 10-May-1991 06:00 185 header file e0601.atr 10-May-1991 06:00 18K reference annotations e0601.dat 10-May-1991 06:00 5.1M digitized signal(s) e0601.hea 10-May-1991 06:00 223 header file e0602.atr 10-May-1991 06:00 22K reference annotations e0602.dat 10-May-1991 06:00 5.1M digitized signal(s) e0602.hea 10-May-1991 06:00 254 header file e0603.atr 10-May-1991 06:00 16K reference annotations e0603.dat 10-May-1991 06:00 5.1M digitized signal(s) e0603.hea 10-May-1991 06:00 237 header file e0604.atr 10-May-1991 06:00 17K reference annotations e0604.dat 10-May-1991 06:00 5.1M digitized signal(s) e0604.hea 10-May-1991 06:00 259 header file e0605.atr 10-May-1991 06:00 25K reference annotations e0605.dat 10-May-1991 06:00 5.1M digitized signal(s) e0605.hea 10-May-1991 06:00 224 header file e0606.atr 10-May-1991 06:00 19K reference annotations e0606.dat 10-May-1991 06:00 5.1M digitized signal(s) e0606.hea 10-May-1991 06:00 250 header file e0607.atr 10-May-1991 06:00 21K reference annotations e0607.dat 10-May-1991 06:00 5.1M digitized signal(s) e0607.hea 10-May-1991 06:00 284 header file e0609.atr 10-May-1991 06:00 19K reference annotations e0609.dat 10-May-1991 06:00 5.1M digitized signal(s) e0609.hea 10-May-1991 06:00 220 header file e0610.atr 10-May-1991 06:00 16K reference annotations e0610.dat 10-May-1991 06:00 5.1M digitized signal(s) e0610.hea 10-May-1991 06:00 225 header file e0611.atr 10-May-1991 06:00 12K reference annotations e0611.dat 10-May-1991 06:00 5.1M digitized signal(s) e0611.hea 10-May-1991 06:00 194 header file e0612.atr 10-May-1991 06:00 14K reference annotations e0612.dat 10-May-1991 06:00 5.1M digitized signal(s) e0612.hea 10-May-1991 06:00 194 header file e0613.atr 10-May-1991 06:00 17K reference annotations e0613.dat 10-May-1991 06:00 5.1M digitized signal(s) e0613.hea 10-May-1991 06:00 207 header file e0614.atr 10-May-1991 06:00 23K reference annotations e0614.dat 10-May-1991 06:00 5.1M digitized signal(s) e0614.hea 10-May-1991 06:00 238 header file e0615.atr 10-May-1991 06:00 15K reference annotations e0615.dat 10-May-1991 06:00 5.1M digitized signal(s) e0615.hea 10-May-1991 06:00 227 header file e0704.atr 10-May-1991 06:00 20K reference annotations e0704.dat 10-May-1991 06:00 5.1M digitized signal(s) e0704.hea 10-May-1991 06:00 177 header file e0801.atr 10-May-1991 06:00 19K reference annotations e0801.dat 10-May-1991 06:00 5.1M digitized signal(s) e0801.hea 10-May-1991 06:00 217 header file e0808.atr 10-May-1991 06:00 23K reference annotations e0808.dat 10-May-1991 06:00 5.1M digitized signal(s) e0808.hea 10-May-1991 06:00 218 header file e0817.atr 10-May-1991 06:00 16K reference annotations e0817.dat 10-May-1991 06:00 5.1M digitized signal(s) e0817.hea 10-May-1991 06:00 224 header file e0818.atr 10-May-1991 06:00 21K reference annotations e0818.dat 10-May-1991 06:00 5.1M digitized signal(s) e0818.hea 10-May-1991 06:00 199 header file e1301.atr 10-May-1991 06:00 17K reference annotations e1301.dat 10-May-1991 06:00 5.1M digitized signal(s) e1301.hea 10-May-1991 06:00 171 header file e1302.atr 10-May-1991 06:00 17K reference annotations e1302.dat 10-May-1991 06:00 5.1M digitized signal(s) e1302.hea 10-May-1991 06:00 193 header file e1304.atr 10-May-1991 06:00 16K reference annotations e1304.dat 10-May-1991 06:00 5.1M digitized signal(s) e1304.hea 10-May-1991 06:00 187 header file edb.txt 12-Oct-1999 18:18 8.7K RECORDS 29-Sep-2000 17:34 540 list of record names ANNOTATORS 14-Oct-2000 04:35 72 list of annotators MD5SUMS 25-Nov-2009 17:32 12K SHA1SUMS 25-Nov-2009 17:32 14K SHA256SUMS 25-Nov-2009 17:32 21K DOI 21-Sep-2015 19:00 19 local.css 28-Oct-2015 22:40 3.1K e0204.hea 16-May-2017 23:57 180 header file
If you would like help understanding, using, or downloading content, please see our Frequently Asked Questions. If you have any comments, feedback, or particular questions regarding this page, please send them to the webmaster. Comments and issues can also be raised on PhysioNet's GitHub page. Updated Friday, 28-Oct-2016 22:58:42 CEST |
PhysioNet is supported by the National Institute of General Medical Sciences (NIGMS) and the National Institute of Biomedical Imaging and Bioengineering (NIBIB) under NIH grant number 2R01GM104987-09.
|