PhysioNet · PhysioBank · PhysioToolkit

PhysioBank
physiologic signal archives
for biomedical research

Advanced Search | Tour | Mirrors
How to Cite | Contributing | FAQ

Getting Started · Signal Archives · Chart-O-Matic · About PhysioBank

Site Map

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.

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 for each subject are 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 uccdbb002, only two distinct ECG signals were recorded; the second ECG signal was also used as the third signal.

Annotations

Sleep stages were scored by 1 experienced sleep technologist according to standard Rechtschaffen and Kales rules (see the _stage.txt files). Annotations in these files are:

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

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 column

Time of occurrence (time of day)

2nd column

HYP	Hypopnea
C	Central
O	Obstructive
M	Mixed

3rd column

Periodic breathing (PB)/ Cheynes-Stokes (CS)

9th & 10th columns

Bradycardia/ 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 (echua at ee dot ucd dot ie)

 Name                    Last modified      Size  Description
 Parent Directory                             -   
 RECORDS                 08-Feb-2008 14:11  875   
 SubjectDetails.xls      29-Oct-2006 15:40   21K  
 ucddb002.rec            29-Oct-2006 14:39   27M  
 ucddb002_lifecard.edf   26-Sep-2006 08:01   20M  
 ucddb002_respevt.txt    24-Jul-2003 14:57  9.7K  
 ucddb002_stage.txt      29-Oct-2006 15:26  2.2K  
 ucddb003.rec            29-Oct-2006 14:42   32M  
 ucddb003_lifecard.edf   26-Sep-2006 08:04   21M  
 ucddb003_respevt.txt    05-Jan-2004 14:39   24K  
 ucddb003_stage.txt      29-Oct-2006 15:26  2.6K  
 ucddb005.rec            29-Oct-2006 14:43   30M  
 ucddb005_lifecard.edf   26-Sep-2006 08:07   21M  
 ucddb005_respevt.txt    10-Dec-2003 10:31  4.5K  
 ucddb005_stage.txt      29-Oct-2006 15:26  2.4K  
 ucddb006.rec            29-Oct-2006 14:44   30M  
 ucddb006_lifecard.edf   26-Sep-2006 08:08   22M  
 ucddb006_respevt.txt    09-Jan-2004 10:08   17K  
 ucddb006_stage.txt      29-Oct-2006 15:26  2.4K  
 ucddb007.rec            29-Oct-2006 14:45   30M  
 ucddb007_lifecard.edf   26-Sep-2006 08:09   22M  
 ucddb007_respevt.txt    09-Jan-2004 11:18  5.9K  
 ucddb007_stage.txt      29-Oct-2006 15:26  2.4K  
 ucddb008.rec            29-Oct-2006 14:45   28M  
 ucddb008_lifecard.edf   26-Sep-2006 08:11   22M  
 ucddb008_respevt.txt    25-Jul-2003 09:09  1.7K  
 ucddb008_stage.txt      29-Oct-2006 15:26  2.3K  
 ucddb009.rec            29-Oct-2006 14:47   34M  
 ucddb009_lifecard.edf   26-Sep-2006 08:15   21M  
 ucddb009_respevt.txt    10-Sep-2003 14:24  6.1K  
 ucddb009_stage.txt      29-Oct-2006 15:26  2.7K  
 ucddb010.rec            29-Oct-2006 14:49   33M  
 ucddb010_lifecard.edf   26-Sep-2006 08:18   21M  
 ucddb010_respevt.txt    10-Sep-2003 12:00   18K  
 ucddb010_stage.txt      29-Oct-2006 15:26  2.7K  
 ucddb011.rec            29-Oct-2006 14:52   40M  
 ucddb011_lifecard.edf   26-Sep-2006 08:21   22M  
 ucddb011_respevt.txt    19-Dec-2003 15:57  2.8K  
 ucddb011_stage.txt      29-Oct-2006 15:26  2.6K  
 ucddb012.rec            29-Oct-2006 14:53   32M  
 ucddb012_lifecard.edf   26-Sep-2006 08:23   22M  
 ucddb012_respevt.txt    08-Jan-2004 14:51   12K  
 ucddb012_stage.txt      29-Oct-2006 15:26  2.5K  
 ucddb013.rec            29-Oct-2006 14:53   30M  
 ucddb013_lifecard.edf   26-Sep-2006 08:24   22M  
 ucddb013_respevt.txt    19-Dec-2003 15:06  5.1K  
 ucddb013_stage.txt      29-Oct-2006 15:26  2.4K  
 ucddb014.rec            29-Oct-2006 14:54   28M  
 ucddb014_lifecard.edf   26-Sep-2006 08:25   20M  
 ucddb014_respevt.txt    10-Sep-2003 11:02   14K  
 ucddb014_stage.txt      29-Oct-2006 15:26  2.3K  
 ucddb015.rec            29-Oct-2006 14:56   34M  
 ucddb015_lifecard.edf   26-Sep-2006 08:28   23M  
 ucddb015_respevt.txt    07-Jan-2004 14:15  3.1K  
 ucddb015_stage.txt      29-Oct-2006 15:26  2.7K  
 ucddb017.rec            29-Oct-2006 14:57   29M  
 ucddb017_lifecard.edf   26-Sep-2006 08:30   20M  
 ucddb017_respevt.txt    09-Dec-2003 11:18  5.4K  
 ucddb017_stage.txt      29-Oct-2006 15:26  2.3K  
 ucddb018.rec            29-Oct-2006 14:57   30M  
 ucddb018_lifecard.edf   26-Sep-2006 08:32   22M  
 ucddb018_respevt.txt    12-Dec-2003 15:28  916   
 ucddb018_stage.txt      29-Oct-2006 15:26  2.4K  
 ucddb019.rec            29-Oct-2006 14:58   31M  
 ucddb019_lifecard.edf   26-Sep-2006 08:33   22M  
 ucddb019_respevt.txt    08-Jan-2004 13:50  8.1K  
 ucddb019_stage.txt      29-Oct-2006 15:26  2.5K  
 ucddb020.rec            29-Oct-2006 14:59   28M  
 ucddb020_lifecard.edf   26-Sep-2006 08:34   21M  
 ucddb020_respevt.txt    08-Jan-2004 09:54  5.8K  
 ucddb020_stage.txt      29-Oct-2006 15:26  2.2K  
 ucddb021.rec            29-Oct-2006 15:01   33M  
 ucddb021_lifecard.edf   26-Sep-2006 08:36   22M  
 ucddb021_respevt.txt    07-Jan-2004 16:29  6.3K  
 ucddb021_stage.txt      29-Oct-2006 15:26  2.7K  
 ucddb022.rec            29-Oct-2006 15:02   29M  
 ucddb022_lifecard.edf   26-Sep-2006 08:38   21M  
 ucddb022_respevt.txt    08-Jan-2004 11:09  2.4K  
 ucddb022_stage.txt      29-Oct-2006 15:26  2.3K  
 ucddb023.rec            29-Oct-2006 15:03   32M  
 ucddb023_lifecard.edf   26-Sep-2006 08:39   23M  
 ucddb023_respevt.txt    12-Dec-2003 14:43   15K  
 ucddb023_stage.txt      29-Oct-2006 15:26  2.5K  
 ucddb024.rec            29-Oct-2006 15:05   33M  
 ucddb024_lifecard.edf   26-Sep-2006 08:41   22M  
 ucddb024_respevt.txt    06-Jan-2004 08:47   12K  
 ucddb024_stage.txt      29-Oct-2006 15:26  2.7K  
 ucddb025.rec            29-Oct-2006 15:05   26M  
 ucddb025_lifecard.edf   26-Sep-2006 08:42   22M  
 ucddb025_respevt.txt    09-Dec-2003 09:27   33K  
 ucddb025_stage.txt      29-Oct-2006 15:26  2.1K  
 ucddb026.rec            29-Oct-2006 15:06   31M  
 ucddb026_lifecard.edf   26-Sep-2006 08:45   21M  
 ucddb026_respevt.txt    05-Jan-2004 15:59  6.7K  
 ucddb026_stage.txt      29-Oct-2006 15:26  2.5K  
 ucddb027.rec            29-Oct-2006 15:08   33M  
 ucddb027_lifecard.edf   26-Sep-2006 08:47   22M  
 ucddb027_respevt.txt    07-Jan-2004 15:25   32K  
 ucddb027_stage.txt      29-Oct-2006 15:26  2.6K  
 ucddb028.rec            29-Oct-2006 15:09   26M  
 ucddb028_lifecard.edf   26-Sep-2006 08:48   20M  
 ucddb028_respevt.txt    09-Sep-2003 10:36   15K  
 ucddb028_stage.txt      29-Oct-2006 15:26  2.1K

Apache/2.2.8 (Fedora) Server at www.physionet.org Port 80

PhysioBank physiologic signal archives for biomedical research