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 -
DOI 2015-09-21 13:00 19
MD5SUMS 2009-11-25 11:32 12K
SHA1SUMS 2009-11-25 11:32 14K
SHA256SUMS 2009-11-25 11:32 21K
edb.txt 1999-10-12 12:18 8.7K
e0103.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0104.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0105.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0106.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0107.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0108.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0110.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0111.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0112.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0113.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0114.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0115.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0116.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0118.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0119.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0121.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0122.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0123.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0124.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0125.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0126.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0127.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0129.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0133.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0136.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0139.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0147.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0148.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0151.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0154.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0155.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0159.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0161.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0162.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0163.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0166.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0170.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0202.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0203.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0204.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0205.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0206.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0207.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0208.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0210.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0211.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0212.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0213.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0302.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0303.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0304.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0305.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0306.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0403.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0404.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0405.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0406.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0408.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0409.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0410.dat 1991-05-10 00:00 5.1M digitized signal(s)
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e0413.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0415.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0417.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0418.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0501.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0509.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0515.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0601.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0602.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0603.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0604.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0605.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0606.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0607.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0609.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0610.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0611.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0612.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0613.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0614.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0615.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0704.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0801.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0808.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0817.dat 1991-05-10 00:00 5.1M digitized signal(s)
e0818.dat 1991-05-10 00:00 5.1M digitized signal(s)
e1301.dat 1991-05-10 00:00 5.1M digitized signal(s)
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e1304.dat 1991-05-10 00:00 5.1M digitized signal(s)
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e0105.hea 1991-05-10 00:00 231 header file
e0106.hea 1991-05-10 00:00 232 header file
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e0115.hea 1991-05-10 00:00 182 header file
e0116.hea 1991-05-10 00:00 217 header file
e0118.hea 1991-05-10 00:00 229 header file
e0119.hea 1991-05-10 00:00 229 header file
e0121.hea 1991-05-10 00:00 231 header file
e0122.hea 1991-05-10 00:00 231 header file
e0123.hea 1991-05-10 00:00 279 header file
e0124.hea 1991-05-10 00:00 280 header file
e0125.hea 1991-05-10 00:00 280 header file
e0126.hea 1991-05-10 00:00 281 header file
e0127.hea 1991-05-10 00:00 184 header file
e0129.hea 1991-05-10 00:00 228 header file
e0133.hea 1991-05-10 00:00 218 header file
e0136.hea 1991-05-10 00:00 213 header file
e0139.hea 1991-05-10 00:00 215 header file
e0147.hea 1991-05-10 00:00 237 header file
e0148.hea 1991-05-10 00:00 236 header file
e0151.hea 1991-05-10 00:00 224 header file
e0154.hea 1991-05-10 00:00 215 header file
e0155.hea 1991-05-10 00:00 217 header file
e0159.hea 1991-05-10 00:00 206 header file
e0161.hea 1991-05-10 00:00 178 header file
e0162.hea 1991-05-10 00:00 221 header file
e0163.hea 1991-05-10 00:00 221 header file
e0166.hea 1991-05-10 00:00 194 header file
e0170.hea 1991-05-10 00:00 184 header file
e0202.hea 1991-05-10 00:00 171 header file
e0203.hea 1991-05-10 00:00 200 header file
e0204.hea 2017-05-16 17:57 180 header file
e0205.hea 1991-05-10 00:00 177 header file
e0206.hea 1991-05-10 00:00 172 header file
e0207.hea 1991-05-10 00:00 179 header file
e0208.hea 1991-05-10 00:00 180 header file
e0210.hea 1991-05-10 00:00 172 header file
e0211.hea 1991-05-10 00:00 181 header file
e0212.hea 1991-05-10 00:00 166 header file
e0213.hea 1991-05-10 00:00 173 header file
e0302.hea 1991-05-10 00:00 268 header file
e0303.hea 1991-05-10 00:00 265 header file
e0304.hea 1991-05-10 00:00 223 header file
e0305.hea 1991-05-10 00:00 252 header file
e0306.hea 1991-05-10 00:00 205 header file
e0403.hea 1991-05-10 00:00 189 header file
e0404.hea 1991-05-10 00:00 209 header file
e0405.hea 1991-05-10 00:00 185 header file
e0406.hea 1991-05-10 00:00 240 header file
e0408.hea 1991-05-10 00:00 234 header file
e0409.hea 1991-05-10 00:00 255 header file
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e0417.hea 1991-05-10 00:00 178 header file
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e0607.hea 1991-05-10 00:00 284 header file
e0609.hea 1991-05-10 00:00 220 header file
e0610.hea 1991-05-10 00:00 225 header file
e0611.hea 1991-05-10 00:00 194 header file
e0612.hea 1991-05-10 00:00 194 header file
e0613.hea 1991-05-10 00:00 207 header file
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e0615.hea 1991-05-10 00:00 227 header file
e0704.hea 1991-05-10 00:00 177 header file
e0801.hea 1991-05-10 00:00 217 header file
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e0817.hea 1991-05-10 00:00 224 header file
e0818.hea 1991-05-10 00:00 199 header file
e1301.hea 1991-05-10 00:00 171 header file
e1302.hea 1991-05-10 00:00 193 header file
e1304.hea 1991-05-10 00:00 187 header file
ANNOTATORS 2000-10-13 22:35 72 list of annotators
RECORDS 2000-09-29 11:34 540 list of record names
e0103.atr 1991-05-10 00:00 15K reference annotations
e0104.atr 1991-05-10 00:00 16K reference annotations
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