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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.
Apache/2.4.62 (Debian) mod_auth_pgsql/2.0.3 OpenSSL/3.0.15 Server at archive.physionet.org Port 80Name Last modified Size Description
Parent Directory -
record-descriptions.txt 2008-04-21 06:57 3.1K
files-patients-diagnoses.txt 2008-05-01 14:09 1.4K
SHA256SUMS 2015-09-18 17:15 17K
SHA1SUMS 2015-09-18 17:15 11K
RECORDS 2008-03-05 22:49 299 list of record names
MD5SUMS 2015-09-18 17:14 9.6K
I75.hea 2015-09-18 10:04 565 header file
I75.dat 2007-10-03 01:54 11M digitized signal(s)
I75.atr 2007-10-03 01:54 4.1K reference annotations
I74.hea 2015-09-18 10:04 572 header file
I74.dat 2007-10-04 07:35 11M digitized signal(s)
I74.atr 2008-04-18 02:37 4.7K reference annotations
I73.hea 2015-09-18 10:04 641 header file
I73.dat 2007-10-03 01:46 11M digitized signal(s)
I73.atr 2007-10-03 01:46 3.9K reference annotations
I72.hea 2015-09-18 10:04 643 header file
I72.dat 2007-10-03 02:39 11M digitized signal(s)
I72.atr 2007-10-03 02:39 4.4K reference annotations
I71.hea 2015-09-18 10:04 553 header file
I71.dat 2007-10-09 05:24 11M digitized signal(s)
I71.atr 2008-04-18 06:42 3.3K reference annotations
I70.hea 2015-09-18 10:04 523 header file
I70.dat 2007-10-09 05:24 11M digitized signal(s)
I70.atr 2008-04-18 06:06 3.3K reference annotations
I69.hea 2015-09-18 10:04 558 header file
I69.dat 2007-10-03 01:42 11M digitized signal(s)
I69.atr 2008-04-21 08:09 4.2K reference annotations
I68.hea 2015-09-18 10:04 512 header file
I68.dat 2007-10-03 01:42 11M digitized signal(s)
I68.atr 2008-04-21 08:09 5.2K reference annotations
I67.hea 2015-09-18 10:04 538 header file
I67.dat 2007-10-03 01:47 11M digitized signal(s)
I67.atr 2008-04-18 02:29 5.8K reference annotations
I66.hea 2015-09-18 10:04 527 header file
I66.dat 2007-10-03 01:47 11M digitized signal(s)
I66.atr 2008-04-18 02:29 4.6K reference annotations
I65.hea 2015-09-18 10:04 562 header file
I65.dat 2007-10-03 01:47 11M digitized signal(s)
I65.atr 2008-04-18 02:29 5.2K reference annotations
I64.hea 2015-09-18 10:04 538 header file
I64.dat 2007-10-03 01:33 11M digitized signal(s)
I64.atr 2007-10-03 01:33 3.7K reference annotations
I63.hea 2015-09-18 10:04 524 header file
I63.dat 2007-10-03 01:32 11M digitized signal(s)
I63.atr 2008-04-18 02:22 3.9K reference annotations
I62.hea 2015-09-18 10:04 557 header file
I62.dat 2007-10-05 06:04 11M digitized signal(s)
I62.atr 2008-04-18 02:21 4.4K reference annotations
I61.hea 2015-09-18 10:04 525 header file
I61.dat 2007-10-03 01:40 11M digitized signal(s)
I61.atr 2008-04-18 02:25 2.8K reference annotations
I60.hea 2015-09-18 10:04 527 header file
I60.dat 2007-10-03 01:40 11M digitized signal(s)
I60.atr 2007-10-03 01:40 4.8K reference annotations
I59.hea 2015-09-18 10:04 551 header file
I59.dat 2007-10-03 01:40 11M digitized signal(s)
I59.atr 2007-10-03 01:40 4.2K reference annotations
I58.hea 2015-09-18 10:04 598 header file
I58.dat 2007-10-03 01:57 11M digitized signal(s)
I58.atr 2007-10-03 01:57 4.5K reference annotations
I57.hea 2015-09-18 10:04 635 header file
I57.dat 2007-10-03 01:56 11M digitized signal(s)
I57.atr 2007-10-03 01:56 5.6K reference annotations
I56.hea 2015-09-18 10:04 567 header file
I56.dat 2007-10-05 05:55 11M digitized signal(s)
I56.atr 2008-04-18 04:16 3.3K reference annotations
I55.hea 2015-09-18 10:04 547 header file
I55.dat 2007-10-03 01:41 11M digitized signal(s)
I55.atr 2008-04-18 02:26 4.2K reference annotations
I54.hea 2015-09-18 10:04 579 header file
I54.dat 2007-10-05 05:54 11M digitized signal(s)
I54.atr 2008-04-18 02:26 4.6K reference annotations
I53.hea 2015-09-18 10:04 545 header file
I53.dat 2008-04-18 04:14 11M digitized signal(s)
I53.atr 2007-10-03 01:38 4.4K reference annotations
I52.hea 2015-09-18 10:04 542 header file
I52.dat 2008-04-18 04:14 11M digitized signal(s)
I52.atr 2007-10-03 01:38 3.4K reference annotations
I51.hea 2015-09-18 10:04 548 header file
I51.dat 2008-04-18 04:14 11M digitized signal(s)
I51.atr 2007-10-03 01:38 5.4K reference annotations
I50.hea 2015-09-18 10:04 558 header file
I50.dat 2007-10-03 01:43 11M digitized signal(s)
I50.atr 2008-04-18 06:16 5.9K reference annotations
I49.hea 2015-09-18 10:04 543 header file
I49.dat 2007-10-03 01:43 11M digitized signal(s)
I49.atr 2008-04-18 06:14 4.2K reference annotations
I48.hea 2015-09-18 10:04 566 header file
I48.dat 2007-10-03 01:50 11M digitized signal(s)
I48.atr 2008-04-18 02:30 4.6K reference annotations
I47.hea 2015-09-18 10:04 582 header file
I47.dat 2007-10-03 01:48 11M digitized signal(s)
I47.atr 2008-04-18 02:30 3.8K reference annotations
I46.hea 2015-09-18 10:04 630 header file
I46.dat 2007-10-03 01:38 11M digitized signal(s)
I46.atr 2008-04-18 02:24 5.2K reference annotations
I45.hea 2015-09-18 10:04 607 header file
I45.dat 2007-10-03 01:37 11M digitized signal(s)
I45.atr 2007-10-03 01:37 3.8K reference annotations
I44.hea 2015-09-18 10:04 611 header file
I44.dat 2007-10-03 01:37 11M digitized signal(s)
I44.atr 2007-10-03 01:37 4.9K reference annotations
I43.hea 2015-09-18 10:04 593 header file
I43.dat 2007-10-03 01:51 11M digitized signal(s)
I43.atr 2008-04-18 02:31 4.3K reference annotations
I42.hea 2015-09-18 10:04 564 header file
I42.dat 2007-10-03 01:50 11M digitized signal(s)
I42.atr 2008-04-18 02:30 6.1K reference annotations
I41.hea 2015-09-18 10:04 582 header file
I41.dat 2007-10-03 01:40 11M digitized signal(s)
I41.atr 2007-10-03 01:40 3.2K reference annotations
I40.hea 2015-09-18 10:04 590 header file
I40.dat 2007-10-03 01:39 11M digitized signal(s)
I40.atr 2007-10-03 01:39 5.2K reference annotations
I39.hea 2015-09-18 10:04 592 header file
I39.dat 2007-10-03 01:44 11M digitized signal(s)
I39.atr 2007-10-03 01:44 3.5K reference annotations
I38.hea 2015-09-18 10:04 606 header file
I38.dat 2007-10-03 01:43 11M digitized signal(s)
I38.atr 2007-10-03 01:43 5.3K reference annotations
I37.hea 2015-09-18 10:04 611 header file
I37.dat 2007-10-03 01:57 11M digitized signal(s)
I37.atr 2007-10-03 01:57 4.8K reference annotations
I36.hea 2015-09-18 10:04 639 header file
I36.dat 2007-10-05 05:29 11M digitized signal(s)
I36.atr 2008-04-18 02:39 7.6K reference annotations
I35.hea 2015-09-18 10:04 644 header file
I35.dat 2007-10-03 01:57 11M digitized signal(s)
I35.atr 2008-04-18 02:39 7.2K reference annotations
I34.hea 2015-09-18 10:04 584 header file
I34.dat 2007-10-03 01:53 11M digitized signal(s)
I34.atr 2008-04-18 02:31 3.8K reference annotations
I33.hea 2015-09-18 10:04 534 header file
I33.dat 2007-10-05 05:19 11M digitized signal(s)
I33.atr 2008-04-18 02:31 3.6K reference annotations
I32.hea 2015-09-18 10:04 524 header file
I32.dat 2007-10-03 01:37 11M digitized signal(s)
I32.atr 2008-04-18 02:23 3.2K reference annotations
I31.hea 2015-09-18 10:04 542 header file
I31.dat 2007-10-03 01:37 11M digitized signal(s)
I31.atr 2008-04-18 02:23 6.3K reference annotations
I30.hea 2015-09-18 10:04 507 header file
I30.dat 2007-10-03 01:37 11M digitized signal(s)
I30.atr 2008-04-18 02:23 4.8K reference annotations
I29.hea 2015-09-18 10:04 543 header file
I29.dat 2007-10-03 01:36 11M digitized signal(s)
I29.atr 2008-04-18 02:23 5.1K reference annotations
I28.hea 2015-09-18 10:04 523 header file
I28.dat 2007-10-03 01:39 11M digitized signal(s)
I28.atr 2007-10-03 01:39 3.4K reference annotations
I27.hea 2015-09-18 10:04 548 header file
I27.dat 2008-04-18 04:14 11M digitized signal(s)
I27.atr 2007-10-03 01:38 5.1K reference annotations
I26.hea 2015-09-18 10:04 597 header file
I26.dat 2007-10-03 01:43 11M digitized signal(s)
I26.atr 2008-04-18 02:28 2.9K reference annotations
I25.hea 2015-09-18 10:04 561 header file
I25.dat 2007-10-03 01:43 11M digitized signal(s)
I25.atr 2007-10-03 01:43 3.3K reference annotations
I24.hea 2015-09-18 10:04 566 header file
I24.dat 2007-10-03 01:53 11M digitized signal(s)
I24.atr 2007-10-03 01:53 5.0K reference annotations
I23.hea 2015-09-18 10:04 579 header file
I23.dat 2007-10-03 01:52 11M digitized signal(s)
I23.atr 2007-10-03 01:52 4.3K reference annotations
I22.hea 2015-09-18 10:04 637 header file
I22.dat 2007-10-03 01:50 11M digitized signal(s)
I22.atr 2008-04-18 02:30 6.1K reference annotations
I21.hea 2015-09-18 10:04 642 header file
I21.dat 2007-10-05 04:08 11M digitized signal(s)
I21.atr 2008-04-18 02:30 4.3K reference annotations
I20.hea 2015-09-18 10:04 706 header file
I20.dat 2007-10-03 01:50 11M digitized signal(s)
I20.atr 2008-04-18 02:30 5.2K reference annotations
I19.hea 2015-09-18 10:04 537 header file
I19.dat 2007-10-03 01:54 11M digitized signal(s)
I19.atr 2008-04-18 02:37 4.0K reference annotations
I18.hea 2015-09-18 10:04 536 header file
I18.dat 2007-10-03 01:54 11M digitized signal(s)
I18.atr 2008-04-18 02:37 6.0K reference annotations
I17.hea 2015-09-18 10:04 581 header file
I17.dat 2007-10-03 01:41 11M digitized signal(s)
I17.atr 2008-04-18 02:26 3.3K reference annotations
I16.hea 2015-09-18 10:04 580 header file
I16.dat 2007-10-03 01:41 11M digitized signal(s)
I16.atr 2008-04-18 02:26 3.0K reference annotations
I15.hea 2015-09-18 10:04 556 header file
I15.dat 2007-10-03 01:47 11M digitized signal(s)
I15.atr 2007-10-03 01:47 5.1K reference annotations
I14.hea 2015-09-18 10:04 524 header file
I14.dat 2007-10-03 01:39 11M digitized signal(s)
I14.atr 2007-10-03 01:39 3.6K reference annotations
I13.hea 2015-09-18 10:04 498 header file
I13.dat 2007-10-03 01:39 11M digitized signal(s)
I13.atr 2007-10-03 01:39 4.0K reference annotations
I12.hea 2015-09-18 10:04 538 header file
I12.dat 2007-10-03 01:39 11M digitized signal(s)
I12.atr 2008-04-18 04:45 5.5K reference annotations
I11.hea 2015-09-18 10:04 541 header file
I11.dat 2007-10-03 01:42 11M digitized signal(s)
I11.atr 2008-04-18 02:27 4.1K reference annotations
I10.hea 2015-09-18 10:04 558 header file
I10.dat 2007-10-03 01:42 11M digitized signal(s)
I10.atr 2008-04-18 02:27 7.2K reference annotations
I09.hea 2015-09-18 10:04 577 header file
I09.dat 2007-10-03 01:42 11M digitized signal(s)
I09.atr 2008-04-18 02:27 5.9K reference annotations
I08.hea 2015-09-18 10:04 551 header file
I08.dat 2007-10-04 04:27 11M digitized signal(s)
I08.atr 2008-04-18 02:29 4.2K reference annotations
I07.hea 2015-09-18 10:04 575 header file
I07.dat 2007-10-03 01:46 11M digitized signal(s)
I07.atr 2008-04-18 02:29 5.3K reference annotations
I06.hea 2015-09-18 10:04 552 header file
I06.dat 2007-10-03 01:46 11M digitized signal(s)
I06.atr 2008-04-18 02:29 4.9K reference annotations
I05.hea 2015-09-18 10:04 548 header file
I05.dat 2007-10-03 01:36 11M digitized signal(s)
I05.atr 2008-04-18 02:23 3.5K reference annotations
I04.hea 2015-09-18 10:04 614 header file
I04.dat 2007-10-04 03:19 11M digitized signal(s)
I04.atr 2008-04-18 02:22 4.7K reference annotations
I03.hea 2015-09-18 10:04 560 header file
I03.dat 2007-10-04 03:16 11M digitized signal(s)
I03.atr 2008-04-18 02:22 4.8K reference annotations
I02.hea 2015-09-18 10:04 605 header file
I02.dat 2007-10-04 03:00 11M digitized signal(s)
I02.atr 2008-04-18 04:42 5.2K reference annotations
I01.hea 2015-09-18 10:04 573 header file
I01.dat 2007-10-03 06:55 11M digitized signal(s)
I01.atr 2007-10-03 06:55 5.4K reference annotations
DOI 2015-09-21 13:22 20
ANNOTATORS 2008-03-05 18:37 31 list of annotators