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St. Vincent's University Hospital / University College Dublin Sleep Apnea Database

This database contains 25 full overnight polysomnograms with simultaneous three-channel Holter ECG, from adult subjects with suspected sleep-disordered breathing. A revised version of this database was posted on 1 September 2011.

Subjects

Subjects were randomly selected over a 6-month period (September 02 to February 03) from patients referred to the Sleep Disorders Clinic at St Vincent's University Hospital, Dublin, for possible diagnosis of obstructive sleep apnea, central sleep apnea or primary snoring. Subjects had to be above 18 years of age, with no known cardiac disease, autonomic dysfunction, and not on medication known to interfere with heart rate. Twenty-five subjects (21M, 4F) were selected (age: 50 ± 10 years, range 28-68 years; BMI: 31.6 ± 4.0 kg/m², range 25.1-42.5 kg/m²; AHI: 24.1 ± 20.3, range 1.7-90.9). Details are shown below:

Study
Number
Height
(cm)
Weight
(kg)
Gender       PSG
Start
Time
 PSG
AHI
 BMI  Age Epworth
Sleepiness
Score
Study
Duration
(hr)
Sleep
Efficiency
(%)
PSG
Duration
(seconds)
ucddb002 172 100.3 M 0:11:04 23 33.9 54 16 6.2 84 22470
ucddb003 179 102 M 23:07:50 51 31.8 48 13 7.3 81 26478
ucddb005 176 100.4 M 23:28:42 13 32.4 65 19 6.9 63 24798
ucddb006 185 103.5 M 23:57:14 31 30.2 52 3 6.7 89 24267
ucddb007 183 84 M 23:30:22 12 25.1 47 15 6.8 90 24405
ucddb008 145 59.8 F 23:29:11 5 28.4 63 1 6.4 64 23041
ucddb009 180 101.5 M 22:35:22 12 31.3 52 19 7.7 80 27759
ucddb010 174 119 M 22:51:18 34 39.3 38 2 7.6 92 27211
ucddb011 188 101 M 22:47:38 8 28.6 51 8 7.5 60 27030
ucddb012 179 97.5 M 23:23:21 25 30.4 51 16 7.2 85 25941
ucddb013 153 80 F 23:44:00 16 34.2 62 10 6.8 61 24333
ucddb014 177 91 M 23:37:59 36 29 56 5 6.4 79 23239
ucddb015 170 83.9 M 23:02:45 6 29 28 2 7.6 77 27488
ucddb017 176 117 M 23:16:05 12 37.8 53 7 6.6 87 23684
ucddb018 171 77 M 23:49:02 2 26.3 35 10 6.8 60 24685
ucddb019 178 97.8 M 23:30:33 16 30.9 49 18 7.1 92 25573
ucddb020 179 108.8 M 23:48:21 15 34 52 11 6.3 78 22586
ucddb021 161 87 F 22:52:05 13 33.6 41 13 7.6 82 27409
ucddb022 166 80.7 M 23:35:05 7 29.3 34 4 6.6 58 23640
ucddb023 165 89 F 22:55:51 39 32.7 68 13 7.2 67 25850
ucddb024 172 99.9 M 22:58:02 24 33.8 54 19 7.6 83 27250
ucddb025 174 128.6 M 0:25:37 91 42.5 52 24 5.9 77 21350
ucddb026 175 84 M 22:58:13 14 27.4 49 9 7 87 25160
ucddb027 182 93 M 22:56:30 55 28.1 45 10 7.4 86 26791
ucddb028 172 88.9 M 0:29:08 46 30.1 50 13 6 68 21660

(The contents of the table above are also available in SubjectDetails.xls.)

Signals

Polysomnograms were obtained using the Jaeger-Toennies system (Erich Jaeger GmbH, Germany). Signals recorded were: EEG (C3-A2), EEG (C4-A1), left EOG, right EOG, submental EMG, ECG (modified lead V2), oro-nasal airflow (thermistor), ribcage movements, abdomen movements (uncalibrated strain gauges), oxygen saturation (finger pulse oximeter), snoring (tracheal microphone) and body position. The files named with .rec suffixes contain these signals in EDF format.

Three-channel Holter ECGs (V5, CC5, V5R) were recorded using a Reynolds Lifecard CF system (Reynolds Medical, UK); the files named with _lifecard.edf suffixes contain these ECG signals in EDF format. The recording dates and times are not available. In record ucddb002, only two distinct ECG signals were recorded; the second ECG signal was also used as the third signal.

Annotations

Sleep stages were scored by an experienced sleep technologist according to standard Rechtschaffen and Kales rules (see the _stage.txt files). Annotations in these files are:

AnnotationMeaning
0Wake
1REM
2Stage 1
3Stage 2
4Stage 3
5Stage 4
6Artifact
7Indeterminate

Onset time and duration of respiratory events (obstructive, central, mixed apneas and hypopneas, and periodic breathing episodes) were annotated by the same sleep technologist (see the _respevt.txt files). Terms used in these files include:

1st columnTime of occurrence (time of day)
2nd column
HYPHypopnea
CCentral
OObstructive
MMixed
3rd columnPeriodic breathing (PB)/ Cheynes-Stokes (CS)
9th & 10th columnsBradycardia/ Tachycardia

Acknowledgments

These recordings were collected at St. Vincent's University Hospital Sleep Disorders Clinic, under the direction of Prof. Walter McNicholas. Dr. Liam Doherty, Dr. Silke Ryan, and Dr. John Garvey collected and assembled the clinical and demographic information, and Ms. Patricia Boyle was responsible for polysomnogram scoring and annotation. Eric Chua was responsible for de-identification and electronic archiving of records.

Contact information

Conor Heneghan, PhD
School of Electrical, Electronic and Mechanical Engineering
University College Dublin
Belfield
Dublin 4
Ireland
Email: conor.heneghan at ucd dot ie

Technical contact: Eric C.-P. Chua (eric dot chua dot 2 at gmail dot com)
Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory - [   ] RECORDS 08-Feb-2008 14:11 875 list of record names [   ] SubjectDetails.xls 01-Sep-2011 13:10 11K [   ] ucddb002.rec 01-Sep-2011 12:55 27M [   ] ucddb002_lifecard.edf 01-Sep-2011 12:59 20M [TXT] ucddb002_respevt.txt 24-Jul-2003 14:57 9.7K [TXT] ucddb002_stage.txt 29-Oct-2006 15:26 2.2K [   ] ucddb003.rec 01-Sep-2011 12:55 32M [   ] ucddb003_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb003_respevt.txt 05-Jan-2004 14:39 24K [TXT] ucddb003_stage.txt 29-Oct-2006 15:26 2.6K [   ] ucddb005.rec 01-Sep-2011 12:55 30M [   ] ucddb005_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb005_respevt.txt 10-Dec-2003 10:31 4.5K [TXT] ucddb005_stage.txt 29-Oct-2006 15:26 2.4K [   ] ucddb006.rec 01-Sep-2011 12:55 30M [   ] ucddb006_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb006_respevt.txt 09-Jan-2004 10:08 17K [TXT] ucddb006_stage.txt 29-Oct-2006 15:26 2.4K [   ] ucddb007.rec 01-Sep-2011 12:55 30M [   ] ucddb007_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb007_respevt.txt 09-Jan-2004 11:18 5.9K [TXT] ucddb007_stage.txt 29-Oct-2006 15:26 2.4K [   ] ucddb008.rec 01-Sep-2011 12:55 28M [   ] ucddb008_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb008_respevt.txt 25-Jul-2003 09:09 1.7K [TXT] ucddb008_stage.txt 29-Oct-2006 15:26 2.3K [   ] ucddb009.rec 01-Sep-2011 12:55 34M [   ] ucddb009_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb009_respevt.txt 10-Sep-2003 14:24 6.1K [TXT] ucddb009_stage.txt 29-Oct-2006 15:26 2.7K [   ] ucddb010.rec 01-Sep-2011 12:55 33M [   ] ucddb010_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb010_respevt.txt 10-Sep-2003 12:00 18K [TXT] ucddb010_stage.txt 29-Oct-2006 15:26 2.7K [   ] ucddb011.rec 01-Sep-2011 12:55 40M [   ] ucddb011_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb011_respevt.txt 19-Dec-2003 15:57 2.8K [TXT] ucddb011_stage.txt 29-Oct-2006 15:26 2.6K [   ] ucddb012.rec 01-Sep-2011 12:55 32M [   ] ucddb012_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb012_respevt.txt 08-Jan-2004 14:51 12K [TXT] ucddb012_stage.txt 29-Oct-2006 15:26 2.5K [   ] ucddb013.rec 01-Sep-2011 12:55 30M [   ] ucddb013_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb013_respevt.txt 19-Dec-2003 15:06 5.1K [TXT] ucddb013_stage.txt 29-Oct-2006 15:26 2.4K [   ] ucddb014.rec 01-Sep-2011 12:55 28M [   ] ucddb014_lifecard.edf 01-Sep-2011 12:59 20M [TXT] ucddb014_respevt.txt 10-Sep-2003 11:02 14K [TXT] ucddb014_stage.txt 29-Oct-2006 15:26 2.3K [   ] ucddb015.rec 01-Sep-2011 12:55 34M [   ] ucddb015_lifecard.edf 01-Sep-2011 12:59 23M [TXT] ucddb015_respevt.txt 07-Jan-2004 14:15 3.1K [TXT] ucddb015_stage.txt 29-Oct-2006 15:26 2.7K [   ] ucddb017.rec 01-Sep-2011 12:55 29M [   ] ucddb017_lifecard.edf 01-Sep-2011 12:59 20M [TXT] ucddb017_respevt.txt 09-Dec-2003 11:18 5.4K [TXT] ucddb017_stage.txt 29-Oct-2006 15:26 2.3K [   ] ucddb018.rec 01-Sep-2011 12:55 30M [   ] ucddb018_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb018_respevt.txt 12-Dec-2003 15:28 916 [TXT] ucddb018_stage.txt 29-Oct-2006 15:26 2.4K [   ] ucddb019.rec 01-Sep-2011 12:55 31M [   ] ucddb019_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb019_respevt.txt 08-Jan-2004 13:50 8.1K [TXT] ucddb019_stage.txt 29-Oct-2006 15:26 2.5K [   ] ucddb020.rec 01-Sep-2011 12:55 28M [   ] ucddb020_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb020_respevt.txt 08-Jan-2004 09:54 5.8K [TXT] ucddb020_stage.txt 29-Oct-2006 15:26 2.2K [   ] ucddb021.rec 01-Sep-2011 12:55 33M [   ] ucddb021_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb021_respevt.txt 07-Jan-2004 16:29 6.3K [TXT] ucddb021_stage.txt 29-Oct-2006 15:26 2.7K [   ] ucddb022.rec 01-Sep-2011 12:55 29M [   ] ucddb022_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb022_respevt.txt 08-Jan-2004 11:09 2.4K [TXT] ucddb022_stage.txt 29-Oct-2006 15:26 2.3K [   ] ucddb023.rec 01-Sep-2011 12:55 32M [   ] ucddb023_lifecard.edf 01-Sep-2011 12:59 23M [TXT] ucddb023_respevt.txt 12-Dec-2003 14:43 15K [TXT] ucddb023_stage.txt 29-Oct-2006 15:26 2.5K [   ] ucddb024.rec 01-Sep-2011 12:55 33M [   ] ucddb024_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb024_respevt.txt 06-Jan-2004 08:47 12K [TXT] ucddb024_stage.txt 29-Oct-2006 15:26 2.7K [   ] ucddb025.rec 01-Sep-2011 12:55 26M [   ] ucddb025_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb025_respevt.txt 09-Dec-2003 09:27 33K [TXT] ucddb025_stage.txt 29-Oct-2006 15:26 2.1K [   ] ucddb026.rec 01-Sep-2011 12:55 31M [   ] ucddb026_lifecard.edf 01-Sep-2011 12:59 21M [TXT] ucddb026_respevt.txt 05-Jan-2004 15:59 6.7K [TXT] ucddb026_stage.txt 29-Oct-2006 15:26 2.5K [   ] ucddb027.rec 01-Sep-2011 12:55 33M [   ] ucddb027_lifecard.edf 01-Sep-2011 12:59 22M [TXT] ucddb027_respevt.txt 07-Jan-2004 15:25 32K [TXT] ucddb027_stage.txt 29-Oct-2006 15:26 2.6K [   ] ucddb028.rec 01-Sep-2011 12:55 26M [   ] ucddb028_lifecard.edf 01-Sep-2011 12:59 20M [TXT] ucddb028_respevt.txt 09-Sep-2003 10:36 15K [TXT] ucddb028_stage.txt 29-Oct-2006 15:26 2.1K
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Updated Friday, 16 December 2011 at 01:34 EST

NIBIB/NIH/NIGMS National Institute for Biomedical Imaging and Bioengineering National Institutes of Health National Institute of General Medical Sciences