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This database consists of 75 annotated recordings extracted from 32 Holter records. Each record is 30 minutes long and contains 12 standard leads, each sampled at 257 Hz, with gains varying from 250 to 1100 analog-to-digital converter units per millivolt. Gains for each record are specified in its .hea file. The reference annotation files contain over 175,000 beat annotations in all.
The original records were collected from patients undergoing tests for coronary artery disease (17 men and 15 women, aged 18-80; mean age: 58). None of the patients had pacemakers; most had ventricular ectopic beats. In selecting records to be included in the database, preference was given to subjects with ECGs consistent with ischemia, coronary artery disease, conduction abnormalities, and arrhythmias; observations of those selected included:
| Diagnosis | Patients |
| Acute MI | 2 |
| Transient ischemic attack (angina pectoris) | 5 |
| Prior MI | 4 |
| Coronary artery disease with hypertension | 7 (4 with ECGs consistent with left ventricular hypertrophy) |
| Sinus node dysfunction | 1 |
| Supraventricular ectopy | 18 |
| Atrial fibrillation or SVTA | 3 (2 with paroxysmal AF) |
| WPW | 2 |
| AV block | 1 |
| Bundle branch block | 3 |
These diagnoses were confirmed by enzyme assays, coronary angiography, electrophysiological study, and pressure monitoring where necessary. For each record, the .hea file includes the patient's age, sex, diagnoses, and a summary of features of the ECG. Each .hea file also includes a patient number (1-32) that identifies the source recording; all records with a given patient number were obtained from the same Holter recording. For convenience, this information is also collected in the files record-descriptions.txt and files-patients-diagnoses.txt.
The annotations were produced by an automatic algorithm and then corrected manually, following the standard PhysioBank beat annotation definitions. The algorithm generally places beat annotations in the middle of the QRS complex (as determined from all 12 leads); the locations have not been manually corrected, however, and there may be occasional misaligned annotations as a result.
This database was contributed by the St. Petersburg Institute of Cardiological Technics (Incart), St. Petersburg, Russia. The database was initially developed by Viktor Tihonenko (vmt@incart.ru) and Alexander Khaustov (avk@incart.ru). Additional verification was done by Sergey Ivanov and Alexei Rivin (Incart). Please refer questions and corrections to avk@incart.ru.
Apache/2.2.8 (Fedora) Server at www.physionet.org Port 80Name Last modified Size Description
Parent Directory -
ANNOTATORS 05-Mar-2008 18:37 31
I01.atr 03-Oct-2007 06:55 5.4K
I01.dat 03-Oct-2007 06:55 11M
I01.hea 21-Apr-2008 08:04 487
I02.atr 18-Apr-2008 04:42 5.2K
I02.dat 04-Oct-2007 03:00 11M
I02.hea 21-Apr-2008 08:04 519
I03.atr 18-Apr-2008 02:22 4.8K
I03.dat 04-Oct-2007 03:16 11M
I03.hea 21-Apr-2008 08:04 468
I04.atr 18-Apr-2008 02:22 4.7K
I04.dat 04-Oct-2007 03:19 11M
I04.hea 21-Apr-2008 08:04 517
I05.atr 18-Apr-2008 02:23 3.5K
I05.dat 03-Oct-2007 01:36 11M
I05.hea 21-Apr-2008 08:04 463
I06.atr 18-Apr-2008 02:29 4.9K
I06.dat 03-Oct-2007 01:46 11M
I06.hea 21-Apr-2008 08:04 471
I07.atr 18-Apr-2008 02:29 5.3K
I07.dat 03-Oct-2007 01:46 11M
I07.hea 21-Apr-2008 08:04 486
I08.atr 18-Apr-2008 02:29 4.2K
I08.dat 04-Oct-2007 04:27 11M
I08.hea 21-Apr-2008 08:04 460
I09.atr 18-Apr-2008 02:27 5.9K
I09.dat 03-Oct-2007 01:42 11M
I09.hea 21-Apr-2008 08:04 499
I10.atr 18-Apr-2008 02:27 7.2K
I10.dat 03-Oct-2007 01:42 11M
I10.hea 21-Apr-2008 08:04 471
I11.atr 18-Apr-2008 02:27 4.1K
I11.dat 03-Oct-2007 01:42 11M
I11.hea 21-Apr-2008 08:04 457
I12.atr 18-Apr-2008 04:45 5.5K
I12.dat 03-Oct-2007 01:39 11M
I12.hea 21-Apr-2008 08:04 453
I13.atr 03-Oct-2007 01:39 4.0K
I13.dat 03-Oct-2007 01:39 11M
I13.hea 21-Apr-2008 08:04 422
I14.atr 03-Oct-2007 01:39 3.6K
I14.dat 03-Oct-2007 01:39 11M
I14.hea 21-Apr-2008 08:04 439
I15.atr 03-Oct-2007 01:47 5.1K
I15.dat 03-Oct-2007 01:47 11M
I15.hea 21-Apr-2008 08:04 474
I16.atr 18-Apr-2008 02:26 3.0K
I16.dat 03-Oct-2007 01:41 11M
I16.hea 21-Apr-2008 08:04 505
I17.atr 18-Apr-2008 02:26 3.3K
I17.dat 03-Oct-2007 01:41 11M
I17.hea 21-Apr-2008 08:04 502
I18.atr 18-Apr-2008 02:37 6.0K
I18.dat 03-Oct-2007 01:54 11M
I18.hea 21-Apr-2008 08:04 445
I19.atr 18-Apr-2008 02:37 4.0K
I19.dat 03-Oct-2007 01:54 11M
I19.hea 21-Apr-2008 08:04 445
I20.atr 18-Apr-2008 02:30 5.2K
I20.dat 03-Oct-2007 01:50 11M
I20.hea 21-Apr-2008 08:04 619
I21.atr 18-Apr-2008 02:30 4.3K
I21.dat 05-Oct-2007 04:08 11M
I21.hea 21-Apr-2008 08:04 548
I22.atr 18-Apr-2008 02:30 6.1K
I22.dat 03-Oct-2007 01:50 11M
I22.hea 21-Apr-2008 08:04 557
I23.atr 03-Oct-2007 01:52 4.3K
I23.dat 03-Oct-2007 01:52 11M
I23.hea 21-Apr-2008 08:04 493
I24.atr 03-Oct-2007 01:53 5.0K
I24.dat 03-Oct-2007 01:53 11M
I24.hea 21-Apr-2008 08:04 474
I25.atr 03-Oct-2007 01:43 3.3K
I25.dat 03-Oct-2007 01:43 11M
I25.hea 21-Apr-2008 08:04 466
I26.atr 18-Apr-2008 02:28 2.9K
I26.dat 03-Oct-2007 01:43 11M
I26.hea 21-Apr-2008 08:04 514
I27.atr 03-Oct-2007 01:38 5.1K
I27.dat 18-Apr-2008 04:14 11M
I27.hea 21-Apr-2008 08:04 456
I28.atr 03-Oct-2007 01:39 3.4K
I28.dat 03-Oct-2007 01:39 11M
I28.hea 21-Apr-2008 08:04 438
I29.atr 18-Apr-2008 02:23 5.1K
I29.dat 03-Oct-2007 01:36 11M
I29.hea 21-Apr-2008 08:04 455
I30.atr 18-Apr-2008 02:23 4.8K
I30.dat 03-Oct-2007 01:37 11M
I30.hea 21-Apr-2008 08:04 421
I31.atr 18-Apr-2008 02:23 6.3K
I31.dat 03-Oct-2007 01:37 11M
I31.hea 21-Apr-2008 08:04 449
I32.atr 18-Apr-2008 02:23 3.2K
I32.dat 03-Oct-2007 01:37 11M
I32.hea 21-Apr-2008 08:04 439
I33.atr 18-Apr-2008 02:31 3.6K
I33.dat 05-Oct-2007 05:19 11M
I33.hea 21-Apr-2008 08:04 458
I34.atr 18-Apr-2008 02:31 3.8K
I34.dat 03-Oct-2007 01:53 11M
I34.hea 21-Apr-2008 08:04 495
I35.atr 18-Apr-2008 02:39 7.2K
I35.dat 03-Oct-2007 01:57 11M
I35.hea 21-Apr-2008 08:04 556
I36.atr 18-Apr-2008 02:39 7.6K
I36.dat 05-Oct-2007 05:29 11M
I36.hea 21-Apr-2008 08:04 545
I37.atr 03-Oct-2007 01:57 4.8K
I37.dat 03-Oct-2007 01:57 11M
I37.hea 21-Apr-2008 08:04 526
I38.atr 03-Oct-2007 01:43 5.3K
I38.dat 03-Oct-2007 01:43 11M
I38.hea 21-Apr-2008 08:04 516
I39.atr 03-Oct-2007 01:44 3.5K
I39.dat 03-Oct-2007 01:44 11M
I39.hea 21-Apr-2008 08:04 509
I40.atr 03-Oct-2007 01:39 5.2K
I40.dat 03-Oct-2007 01:39 11M
I40.hea 21-Apr-2008 08:04 493
I41.atr 03-Oct-2007 01:40 3.2K
I41.dat 03-Oct-2007 01:40 11M
I41.hea 21-Apr-2008 08:04 485
I42.atr 18-Apr-2008 02:30 6.1K
I42.dat 03-Oct-2007 01:50 11M
I42.hea 21-Apr-2008 08:04 482
I43.atr 18-Apr-2008 02:31 4.3K
I43.dat 03-Oct-2007 01:51 11M
I43.hea 21-Apr-2008 08:04 502
I44.atr 03-Oct-2007 01:37 4.9K
I44.dat 03-Oct-2007 01:37 11M
I44.hea 21-Apr-2008 08:04 526
I45.atr 03-Oct-2007 01:37 3.8K
I45.dat 03-Oct-2007 01:37 11M
I45.hea 21-Apr-2008 08:04 527
I46.atr 18-Apr-2008 02:24 5.2K
I46.dat 03-Oct-2007 01:38 11M
I46.hea 21-Apr-2008 08:04 540
I47.atr 18-Apr-2008 02:30 3.8K
I47.dat 03-Oct-2007 01:48 11M
I47.hea 21-Apr-2008 08:04 499
I48.atr 18-Apr-2008 02:30 4.6K
I48.dat 03-Oct-2007 01:50 11M
I48.hea 21-Apr-2008 08:04 479
I49.atr 18-Apr-2008 06:14 4.2K
I49.dat 03-Oct-2007 01:43 11M
I49.hea 21-Apr-2008 08:04 459
I50.atr 18-Apr-2008 06:16 5.9K
I50.dat 03-Oct-2007 01:43 11M
I50.hea 21-Apr-2008 08:04 472
I51.atr 03-Oct-2007 01:38 5.4K
I51.dat 18-Apr-2008 04:14 11M
I51.hea 21-Apr-2008 08:04 459
I52.atr 03-Oct-2007 01:38 3.4K
I52.dat 18-Apr-2008 04:14 11M
I52.hea 21-Apr-2008 08:04 460
I53.atr 03-Oct-2007 01:38 4.4K
I53.dat 18-Apr-2008 04:14 11M
I53.hea 21-Apr-2008 08:04 456
I54.atr 18-Apr-2008 02:26 4.6K
I54.dat 05-Oct-2007 05:54 11M
I54.hea 21-Apr-2008 08:04 489
I55.atr 18-Apr-2008 02:26 4.2K
I55.dat 03-Oct-2007 01:41 11M
I55.hea 21-Apr-2008 08:04 454
I56.atr 18-Apr-2008 04:16 3.3K
I56.dat 05-Oct-2007 05:55 11M
I56.hea 21-Apr-2008 08:04 478
I57.atr 03-Oct-2007 01:56 5.6K
I57.dat 03-Oct-2007 01:56 11M
I57.hea 21-Apr-2008 08:04 538
I58.atr 03-Oct-2007 01:57 4.5K
I58.dat 03-Oct-2007 01:57 11M
I58.hea 21-Apr-2008 08:04 508
I59.atr 03-Oct-2007 01:40 4.2K
I59.dat 03-Oct-2007 01:40 11M
I59.hea 21-Apr-2008 08:04 459
I60.atr 03-Oct-2007 01:40 4.8K
I60.dat 03-Oct-2007 01:40 11M
I60.hea 21-Apr-2008 08:04 431
I61.atr 18-Apr-2008 02:25 2.8K
I61.dat 03-Oct-2007 01:40 11M
I61.hea 21-Apr-2008 08:04 450
I62.atr 18-Apr-2008 02:21 4.4K
I62.dat 05-Oct-2007 06:04 11M
I62.hea 21-Apr-2008 08:04 471
I63.atr 18-Apr-2008 02:22 3.9K
I63.dat 03-Oct-2007 01:32 11M
I63.hea 21-Apr-2008 08:04 443
I64.atr 03-Oct-2007 01:33 3.7K
I64.dat 03-Oct-2007 01:33 11M
I64.hea 21-Apr-2008 08:04 455
I65.atr 18-Apr-2008 02:29 5.2K
I65.dat 03-Oct-2007 01:47 11M
I65.hea 21-Apr-2008 08:04 477
I66.atr 18-Apr-2008 02:29 4.6K
I66.dat 03-Oct-2007 01:47 11M
I66.hea 21-Apr-2008 08:04 439
I67.atr 18-Apr-2008 02:29 5.8K
I67.dat 03-Oct-2007 01:47 11M
I67.hea 21-Apr-2008 08:04 447
I68.atr 21-Apr-2008 08:09 5.2K
I68.dat 03-Oct-2007 01:42 11M
I68.hea 21-Apr-2008 08:04 428
I69.atr 21-Apr-2008 08:09 4.2K
I69.dat 03-Oct-2007 01:42 11M
I69.hea 21-Apr-2008 08:04 468
I70.atr 18-Apr-2008 06:06 3.3K
I70.dat 09-Oct-2007 05:24 11M
I70.hea 21-Apr-2008 08:04 443
I71.atr 18-Apr-2008 06:42 3.3K
I71.dat 09-Oct-2007 05:24 11M
I71.hea 21-Apr-2008 08:04 476
I72.atr 03-Oct-2007 02:39 4.4K
I72.dat 03-Oct-2007 02:39 11M
I72.hea 21-Apr-2008 08:04 551
I73.atr 03-Oct-2007 01:46 3.9K
I73.dat 03-Oct-2007 01:46 11M
I73.hea 21-Apr-2008 08:04 555
I74.atr 18-Apr-2008 02:37 4.7K
I74.dat 04-Oct-2007 07:35 11M
I74.hea 21-Apr-2008 08:04 486
I75.atr 03-Oct-2007 01:54 4.1K
I75.dat 03-Oct-2007 01:54 11M
I75.hea 21-Apr-2008 08:04 478
MD5SUMS 02-May-2008 12:42 9.5K
RECORDS 05-Mar-2008 22:49 299
SHA1SUMS 02-May-2008 12:42 11K
SHA256SUMS 02-May-2008 12:42 17K
files-patients-diagnoses.txt 01-May-2008 14:09 1.4K
record-descriptions.txt 21-Apr-2008 06:57 3.1K