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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 Evgeniy Yakushenko yes@incart.ru.
Version history
- September 18, 2015:
- The header files have been updated to include the correct checksums and initial values for all signals. The signals and annotations have not been altered.
Name Last modified Size Description
Parent Directory - ANNOTATORS 2008-03-05 18:37 31 list of annotators DOI 2015-09-21 13:22 20 I01.atr 2007-10-03 06:55 5.4K reference annotations I01.dat 2007-10-03 06:55 11M digitized signal(s) I01.hea 2015-09-18 10:04 573 header file I02.atr 2008-04-18 04:42 5.2K reference annotations I02.dat 2007-10-04 03:00 11M digitized signal(s) I02.hea 2015-09-18 10:04 605 header file I03.atr 2008-04-18 02:22 4.8K reference annotations I03.dat 2007-10-04 03:16 11M digitized signal(s) I03.hea 2015-09-18 10:04 560 header file I04.atr 2008-04-18 02:22 4.7K reference annotations I04.dat 2007-10-04 03:19 11M digitized signal(s) I04.hea 2015-09-18 10:04 614 header file I05.atr 2008-04-18 02:23 3.5K reference annotations I05.dat 2007-10-03 01:36 11M digitized signal(s) I05.hea 2015-09-18 10:04 548 header file I06.atr 2008-04-18 02:29 4.9K reference annotations I06.dat 2007-10-03 01:46 11M digitized signal(s) I06.hea 2015-09-18 10:04 552 header file I07.atr 2008-04-18 02:29 5.3K reference annotations I07.dat 2007-10-03 01:46 11M digitized signal(s) I07.hea 2015-09-18 10:04 575 header file I08.atr 2008-04-18 02:29 4.2K reference annotations I08.dat 2007-10-04 04:27 11M digitized signal(s) I08.hea 2015-09-18 10:04 551 header file I09.atr 2008-04-18 02:27 5.9K reference annotations I09.dat 2007-10-03 01:42 11M digitized signal(s) I09.hea 2015-09-18 10:04 577 header file I10.atr 2008-04-18 02:27 7.2K reference annotations I10.dat 2007-10-03 01:42 11M digitized signal(s) I10.hea 2015-09-18 10:04 558 header file I11.atr 2008-04-18 02:27 4.1K reference annotations I11.dat 2007-10-03 01:42 11M digitized signal(s) I11.hea 2015-09-18 10:04 541 header file I12.atr 2008-04-18 04:45 5.5K reference annotations I12.dat 2007-10-03 01:39 11M digitized signal(s) I12.hea 2015-09-18 10:04 538 header file I13.atr 2007-10-03 01:39 4.0K reference annotations I13.dat 2007-10-03 01:39 11M digitized signal(s) I13.hea 2015-09-18 10:04 498 header file I14.atr 2007-10-03 01:39 3.6K reference annotations I14.dat 2007-10-03 01:39 11M digitized signal(s) I14.hea 2015-09-18 10:04 524 header file I15.atr 2007-10-03 01:47 5.1K reference annotations I15.dat 2007-10-03 01:47 11M digitized signal(s) I15.hea 2015-09-18 10:04 556 header file I16.atr 2008-04-18 02:26 3.0K reference annotations I16.dat 2007-10-03 01:41 11M digitized signal(s) I16.hea 2015-09-18 10:04 580 header file I17.atr 2008-04-18 02:26 3.3K reference annotations I17.dat 2007-10-03 01:41 11M digitized signal(s) I17.hea 2015-09-18 10:04 581 header file I18.atr 2008-04-18 02:37 6.0K reference annotations I18.dat 2007-10-03 01:54 11M digitized signal(s) I18.hea 2015-09-18 10:04 536 header file I19.atr 2008-04-18 02:37 4.0K reference annotations I19.dat 2007-10-03 01:54 11M digitized signal(s) I19.hea 2015-09-18 10:04 537 header file I20.atr 2008-04-18 02:30 5.2K reference annotations I20.dat 2007-10-03 01:50 11M digitized signal(s) I20.hea 2015-09-18 10:04 706 header file I21.atr 2008-04-18 02:30 4.3K reference annotations I21.dat 2007-10-05 04:08 11M digitized signal(s) I21.hea 2015-09-18 10:04 642 header file I22.atr 2008-04-18 02:30 6.1K reference annotations I22.dat 2007-10-03 01:50 11M digitized signal(s) I22.hea 2015-09-18 10:04 637 header file I23.atr 2007-10-03 01:52 4.3K reference annotations I23.dat 2007-10-03 01:52 11M digitized signal(s) I23.hea 2015-09-18 10:04 579 header file I24.atr 2007-10-03 01:53 5.0K reference annotations I24.dat 2007-10-03 01:53 11M digitized signal(s) I24.hea 2015-09-18 10:04 566 header file I25.atr 2007-10-03 01:43 3.3K reference annotations I25.dat 2007-10-03 01:43 11M digitized signal(s) I25.hea 2015-09-18 10:04 561 header file I26.atr 2008-04-18 02:28 2.9K reference annotations I26.dat 2007-10-03 01:43 11M digitized signal(s) I26.hea 2015-09-18 10:04 597 header file I27.atr 2007-10-03 01:38 5.1K reference annotations I27.dat 2008-04-18 04:14 11M digitized signal(s) I27.hea 2015-09-18 10:04 548 header file I28.atr 2007-10-03 01:39 3.4K reference annotations I28.dat 2007-10-03 01:39 11M digitized signal(s) I28.hea 2015-09-18 10:04 523 header file I29.atr 2008-04-18 02:23 5.1K reference annotations I29.dat 2007-10-03 01:36 11M digitized signal(s) I29.hea 2015-09-18 10:04 543 header file I30.atr 2008-04-18 02:23 4.8K reference annotations I30.dat 2007-10-03 01:37 11M digitized signal(s) I30.hea 2015-09-18 10:04 507 header file I31.atr 2008-04-18 02:23 6.3K reference annotations I31.dat 2007-10-03 01:37 11M digitized signal(s) I31.hea 2015-09-18 10:04 542 header file I32.atr 2008-04-18 02:23 3.2K reference annotations I32.dat 2007-10-03 01:37 11M digitized signal(s) I32.hea 2015-09-18 10:04 524 header file I33.atr 2008-04-18 02:31 3.6K reference annotations I33.dat 2007-10-05 05:19 11M digitized signal(s) I33.hea 2015-09-18 10:04 534 header file I34.atr 2008-04-18 02:31 3.8K reference annotations I34.dat 2007-10-03 01:53 11M digitized signal(s) I34.hea 2015-09-18 10:04 584 header file I35.atr 2008-04-18 02:39 7.2K reference annotations I35.dat 2007-10-03 01:57 11M digitized signal(s) I35.hea 2015-09-18 10:04 644 header file I36.atr 2008-04-18 02:39 7.6K reference annotations I36.dat 2007-10-05 05:29 11M digitized signal(s) I36.hea 2015-09-18 10:04 639 header file I37.atr 2007-10-03 01:57 4.8K reference annotations I37.dat 2007-10-03 01:57 11M digitized signal(s) I37.hea 2015-09-18 10:04 611 header file I38.atr 2007-10-03 01:43 5.3K reference annotations I38.dat 2007-10-03 01:43 11M digitized signal(s) I38.hea 2015-09-18 10:04 606 header file I39.atr 2007-10-03 01:44 3.5K reference annotations I39.dat 2007-10-03 01:44 11M digitized signal(s) I39.hea 2015-09-18 10:04 592 header file I40.atr 2007-10-03 01:39 5.2K reference annotations I40.dat 2007-10-03 01:39 11M digitized signal(s) I40.hea 2015-09-18 10:04 590 header file I41.atr 2007-10-03 01:40 3.2K reference annotations I41.dat 2007-10-03 01:40 11M digitized signal(s) I41.hea 2015-09-18 10:04 582 header file I42.atr 2008-04-18 02:30 6.1K reference annotations I42.dat 2007-10-03 01:50 11M digitized signal(s) I42.hea 2015-09-18 10:04 564 header file I43.atr 2008-04-18 02:31 4.3K reference annotations I43.dat 2007-10-03 01:51 11M digitized signal(s) I43.hea 2015-09-18 10:04 593 header file I44.atr 2007-10-03 01:37 4.9K reference annotations I44.dat 2007-10-03 01:37 11M digitized signal(s) I44.hea 2015-09-18 10:04 611 header file I45.atr 2007-10-03 01:37 3.8K reference annotations I45.dat 2007-10-03 01:37 11M digitized signal(s) I45.hea 2015-09-18 10:04 607 header file I46.atr 2008-04-18 02:24 5.2K reference annotations I46.dat 2007-10-03 01:38 11M digitized signal(s) I46.hea 2015-09-18 10:04 630 header file I47.atr 2008-04-18 02:30 3.8K reference annotations I47.dat 2007-10-03 01:48 11M digitized signal(s) I47.hea 2015-09-18 10:04 582 header file I48.atr 2008-04-18 02:30 4.6K reference annotations I48.dat 2007-10-03 01:50 11M digitized signal(s) I48.hea 2015-09-18 10:04 566 header file I49.atr 2008-04-18 06:14 4.2K reference annotations I49.dat 2007-10-03 01:43 11M digitized signal(s) I49.hea 2015-09-18 10:04 543 header file I50.atr 2008-04-18 06:16 5.9K reference annotations I50.dat 2007-10-03 01:43 11M digitized signal(s) I50.hea 2015-09-18 10:04 558 header file I51.atr 2007-10-03 01:38 5.4K reference annotations I51.dat 2008-04-18 04:14 11M digitized signal(s) I51.hea 2015-09-18 10:04 548 header file I52.atr 2007-10-03 01:38 3.4K reference annotations I52.dat 2008-04-18 04:14 11M digitized signal(s) I52.hea 2015-09-18 10:04 542 header file I53.atr 2007-10-03 01:38 4.4K reference annotations I53.dat 2008-04-18 04:14 11M digitized signal(s) I53.hea 2015-09-18 10:04 545 header file I54.atr 2008-04-18 02:26 4.6K reference annotations I54.dat 2007-10-05 05:54 11M digitized signal(s) I54.hea 2015-09-18 10:04 579 header file I55.atr 2008-04-18 02:26 4.2K reference annotations I55.dat 2007-10-03 01:41 11M digitized signal(s) I55.hea 2015-09-18 10:04 547 header file I56.atr 2008-04-18 04:16 3.3K reference annotations I56.dat 2007-10-05 05:55 11M digitized signal(s) I56.hea 2015-09-18 10:04 567 header file I57.atr 2007-10-03 01:56 5.6K reference annotations I57.dat 2007-10-03 01:56 11M digitized signal(s) I57.hea 2015-09-18 10:04 635 header file I58.atr 2007-10-03 01:57 4.5K reference annotations I58.dat 2007-10-03 01:57 11M digitized signal(s) I58.hea 2015-09-18 10:04 598 header file I59.atr 2007-10-03 01:40 4.2K reference annotations I59.dat 2007-10-03 01:40 11M digitized signal(s) I59.hea 2015-09-18 10:04 551 header file I60.atr 2007-10-03 01:40 4.8K reference annotations I60.dat 2007-10-03 01:40 11M digitized signal(s) I60.hea 2015-09-18 10:04 527 header file I61.atr 2008-04-18 02:25 2.8K reference annotations I61.dat 2007-10-03 01:40 11M digitized signal(s) I61.hea 2015-09-18 10:04 525 header file I62.atr 2008-04-18 02:21 4.4K reference annotations I62.dat 2007-10-05 06:04 11M digitized signal(s) I62.hea 2015-09-18 10:04 557 header file I63.atr 2008-04-18 02:22 3.9K reference annotations I63.dat 2007-10-03 01:32 11M digitized signal(s) I63.hea 2015-09-18 10:04 524 header file I64.atr 2007-10-03 01:33 3.7K reference annotations I64.dat 2007-10-03 01:33 11M digitized signal(s) I64.hea 2015-09-18 10:04 538 header file I65.atr 2008-04-18 02:29 5.2K reference annotations I65.dat 2007-10-03 01:47 11M digitized signal(s) I65.hea 2015-09-18 10:04 562 header file I66.atr 2008-04-18 02:29 4.6K reference annotations I66.dat 2007-10-03 01:47 11M digitized signal(s) I66.hea 2015-09-18 10:04 527 header file I67.atr 2008-04-18 02:29 5.8K reference annotations I67.dat 2007-10-03 01:47 11M digitized signal(s) I67.hea 2015-09-18 10:04 538 header file I68.atr 2008-04-21 08:09 5.2K reference annotations I68.dat 2007-10-03 01:42 11M digitized signal(s) I68.hea 2015-09-18 10:04 512 header file I69.atr 2008-04-21 08:09 4.2K reference annotations I69.dat 2007-10-03 01:42 11M digitized signal(s) I69.hea 2015-09-18 10:04 558 header file I70.atr 2008-04-18 06:06 3.3K reference annotations I70.dat 2007-10-09 05:24 11M digitized signal(s) I70.hea 2015-09-18 10:04 523 header file I71.atr 2008-04-18 06:42 3.3K reference annotations I71.dat 2007-10-09 05:24 11M digitized signal(s) I71.hea 2015-09-18 10:04 553 header file I72.atr 2007-10-03 02:39 4.4K reference annotations I72.dat 2007-10-03 02:39 11M digitized signal(s) I72.hea 2015-09-18 10:04 643 header file I73.atr 2007-10-03 01:46 3.9K reference annotations I73.dat 2007-10-03 01:46 11M digitized signal(s) I73.hea 2015-09-18 10:04 641 header file I74.atr 2008-04-18 02:37 4.7K reference annotations I74.dat 2007-10-04 07:35 11M digitized signal(s) I74.hea 2015-09-18 10:04 572 header file I75.atr 2007-10-03 01:54 4.1K reference annotations I75.dat 2007-10-03 01:54 11M digitized signal(s) I75.hea 2015-09-18 10:04 565 header file MD5SUMS 2015-09-18 17:14 9.6K RECORDS 2008-03-05 22:49 299 list of record names SHA1SUMS 2015-09-18 17:15 11K SHA256SUMS 2015-09-18 17:15 17K files-patients-diagnoses.txt 2008-05-01 14:09 1.4K record-descriptions.txt 2008-04-21 06:57 3.1K
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