This database is described in
Please cite this publication when referencing this material, and also
include the standard citation for PhysioNet:
Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG,
Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank, PhysioToolkit, and
PhysioNet: Components of a New Research Resource for Complex Physiologic
Signals.
Circulation 101(23):e215-e220 [Circulation Electronic Pages;
http://circ.ahajournals.org/cgi/content/full/101/23/e215];
2000 (June 13).
In addition, when referencing the atr annotations of this database,
please acknowledge their creators (MEDICALgorithmics Ltd, Warsaw, Poland;
efforts coordinated by Michal Tadeusiak).
This database includes 84 long-term ECG recordings of subjects with
paroxysmal or sustained atrial fibrillation (AF). Each record
contains two simultaneously recorded ECG signals digitized at 128 Hz
with 12-bit resolution over a 20 mV range; record durations vary but
are typically 24 to 25 hours.
Two sets of annotations are available here:
- The qrs annotations were produced by an automated
QRS detector; in these annotation files, all detected beats (including
occasional ventricular ectopic beats) are labelled N, detected artifacts
are labelled '|', and AF terminations are labelled T.
- The atr annotations were obtained by manual
review of the output of an automated ECG analysis system (see
below); in these annotation files, all detected beats are
labelled by type, and rhythm changes are also annotated (see
the summary tables for details).
The AF Termination Challenge Database
consists of 80 one-minute excerpts of a subset of these records (those
numbered 00 through 75). As a guide to selecting the excerpts, “T” were inserted manually in the qrs annotation
files of this subset of the records, to mark spontaneous terminations
of AF episodes with durations of at least one minute.
The original recordings were collected and contributed to PhysioNet by
Steven Swiryn and his colleagues at Northwestern University. They
were digitized and automatically annotated at Boston’s Beth Israel
Deaconess Medical Center. Steven Swiryn and George Moody annotated
the AF terminations.
The atr annotations were developed on PhysioNetWorks and
contributed to PhysioNet by MEDICALgorithmics Ltd (Warsaw, Poland).
The recordings have been automatically annotated using
MEDICALgorithmics’ PocketECG system algorithm (FDA 510(k): K112921)
and manually verified by an experienced team of MEDICALgorithmics' ECG
technicians. The reference annotation development project was
coordinated by Michal Tadeusiak.
Thanks to Mariano Llamedo Soria for reporting an error in the original version
of 20.hea, and for providing a correction incorporated in the current version.
Further reading
Segments from this database were used in:
Name Last modified Size Description
![[PARENTDIR]](/icons/back.gif)
Parent Directory -
![[TXT]](/icons/text.gif)
tables.shtml 2012-07-23 17:58 39K
![[ ]](/icons/unknown.gif)
SHA256SUMS 2014-02-24 15:35 24K
SHA1SUMS 2014-02-24 15:34 16K
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RECORDS 2012-02-25 03:20 280 list of record names
MD5SUMS 2014-02-24 15:34 14K
DOI 2015-09-21 13:00 19
ANNOTATORS 2012-07-12 12:33 117 list of annotators
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75.qrs 2003-07-19 00:59 250K unaudited annotations
75.hea 2003-07-18 20:39 120 header file
75.dat 2003-07-18 20:38 37M digitized signal(s)
75.atr 2012-07-23 16:09 248K reference annotations
74.qrs 2003-07-19 00:59 188K unaudited annotations
74.hea 2003-07-18 20:37 122 header file
74.dat 2003-07-18 20:36 45M digitized signal(s)
74.atr 2012-07-23 16:09 207K reference annotations
72.qrs 2003-07-24 11:25 282K unaudited annotations
72.hea 2003-07-18 20:34 122 header file
72.dat 2003-07-18 20:32 43M digitized signal(s)
72.atr 2012-07-23 16:09 283K reference annotations
71.qrs 2003-07-19 00:58 247K unaudited annotations
71.hea 2003-07-18 20:30 122 header file
71.dat 2003-07-18 20:29 43M digitized signal(s)
71.atr 2012-07-23 16:09 245K reference annotations
70.qrs 2003-07-19 00:58 253K unaudited annotations
70.hea 2003-07-18 20:42 117 header file
70.dat 2003-07-18 20:42 46M digitized signal(s)
70.atr 2012-07-23 16:09 251K reference annotations
69.qrs 2003-07-19 00:58 279K unaudited annotations
69.hea 2003-07-18 20:28 122 header file
69.dat 2003-07-18 20:28 42M digitized signal(s)
69.atr 2012-07-23 16:09 276K reference annotations
68.qrs 2003-07-19 00:58 361K unaudited annotations
68.hea 2003-07-18 20:23 120 header file
68.dat 2003-07-18 20:21 42M digitized signal(s)
68.atr 2012-07-23 16:09 361K reference annotations
65.qrs 2003-07-19 00:58 188K unaudited annotations
65.hea 2003-07-18 20:20 122 header file
65.dat 2003-07-18 20:19 45M digitized signal(s)
65.atr 2012-07-23 16:09 188K reference annotations
64.qrs 2003-07-19 00:57 234K unaudited annotations
64.hea 2003-07-18 20:20 122 header file
64.dat 2003-07-18 20:18 43M digitized signal(s)
64.atr 2012-07-23 16:09 234K reference annotations
62.qrs 2003-07-19 00:57 123K unaudited annotations
62.hea 2003-07-18 20:59 121 header file
62.dat 2003-07-18 20:53 44M digitized signal(s)
62.atr 2012-07-23 16:09 243K reference annotations
60.qrs 2003-07-19 00:57 230K unaudited annotations
60.hea 2003-07-18 20:59 123 header file
60.dat 2003-07-18 20:58 40M digitized signal(s)
60.atr 2012-07-23 16:09 228K reference annotations
58.qrs 2003-07-24 11:10 211K unaudited annotations
58.hea 2003-07-18 22:20 119 header file
58.dat 2003-07-18 22:20 42M digitized signal(s)
58.atr 2012-07-23 16:09 224K reference annotations
56.qrs 2003-07-24 11:08 212K unaudited annotations
56.hea 2003-07-18 20:16 124 header file
56.dat 2003-07-18 20:11 42M digitized signal(s)
56.atr 2012-07-23 16:09 258K reference annotations
55.qrs 2003-07-24 11:04 209K unaudited annotations
55.hea 2003-07-18 20:03 122 header file
55.dat 2003-07-18 20:02 45M digitized signal(s)
55.atr 2012-07-23 16:09 209K reference annotations
54.qrs 2003-07-19 00:57 233K unaudited annotations
54.hea 2003-07-18 21:05 118 header file
54.dat 2003-07-18 21:05 44M digitized signal(s)
54.atr 2012-07-23 16:09 231K reference annotations
53.qrs 2003-07-19 00:56 96K unaudited annotations
53.hea 2003-07-18 20:06 119 header file
53.dat 2003-07-18 20:05 35M digitized signal(s)
53.atr 2012-07-23 16:09 111K reference annotations
51.qrs 2003-07-24 10:49 184K unaudited annotations
51.hea 2003-07-18 21:52 121 header file
51.dat 2003-07-18 21:51 43M digitized signal(s)
51.atr 2012-07-23 16:09 191K reference annotations
49.qrs 2003-07-19 00:56 157K unaudited annotations
49.hea 2003-07-18 15:47 121 header file
49.dat 2003-07-18 15:46 42M digitized signal(s)
49.atr 2012-07-23 16:08 157K reference annotations
48.qrs 2003-07-19 00:56 287K unaudited annotations
48.hea 2003-07-18 15:13 124 header file
48.dat 2003-07-18 15:12 42M digitized signal(s)
48.atr 2012-07-23 16:08 287K reference annotations
47.qrs 2003-07-19 00:56 174K unaudited annotations
47.hea 2003-07-18 21:10 124 header file
47.dat 2003-07-18 21:09 43M digitized signal(s)
47.atr 2012-07-23 16:08 186K reference annotations
45.qrs 2003-07-19 00:56 139K unaudited annotations
45.hea 2003-07-18 19:53 124 header file
45.dat 2003-07-18 19:52 45M digitized signal(s)
45.atr 2012-07-23 16:08 191K reference annotations
44.qrs 2003-07-19 00:56 287K unaudited annotations
44.hea 2003-07-18 17:48 119 header file
44.dat 2003-07-18 17:35 45M digitized signal(s)
44.atr 2012-07-23 16:08 288K reference annotations
43.qrs 2003-07-19 00:55 210K unaudited annotations
43.hea 2003-07-18 19:46 119 header file
43.dat 2003-07-18 19:44 45M digitized signal(s)
43.atr 2012-07-23 16:08 209K reference annotations
42.qrs 2003-07-24 10:25 225K unaudited annotations
42.hea 2003-07-18 19:40 118 header file
42.dat 2003-07-18 19:38 37M digitized signal(s)
42.atr 2012-07-23 16:08 225K reference annotations
39.qrs 2003-07-24 09:32 223K unaudited annotations
39.hea 2003-07-18 22:00 121 header file
39.dat 2003-07-18 22:00 44M digitized signal(s)
39.atr 2012-07-23 16:08 225K reference annotations
38.qrs 2003-07-24 09:16 159K unaudited annotations
38.hea 2003-07-18 19:36 120 header file
38.dat 2003-07-18 19:33 43M digitized signal(s)
38.atr 2012-07-23 16:08 176K reference annotations
37.qrs 2003-07-24 09:12 126K unaudited annotations
37.hea 2003-07-18 14:22 120 header file
37.dat 2003-07-18 14:22 35M digitized signal(s)
37.atr 2012-07-23 16:08 146K reference annotations
35.qrs 2003-07-24 09:09 174K unaudited annotations
35.hea 2003-07-18 19:21 121 header file
35.dat 2003-07-18 19:21 43M digitized signal(s)
35.atr 2012-07-23 16:08 176K reference annotations
34.qrs 2003-07-19 00:55 264K unaudited annotations
34.hea 2003-07-18 21:23 120 header file
34.dat 2003-07-18 21:22 43M digitized signal(s)
34.atr 2012-07-23 16:08 264K reference annotations
33.qrs 2003-07-19 00:54 237K unaudited annotations
33.hea 2003-07-18 19:21 120 header file
33.dat 2003-07-18 19:20 43M digitized signal(s)
33.atr 2012-07-23 16:08 239K reference annotations
32.qrs 2003-07-19 00:54 175K unaudited annotations
32.hea 2003-07-18 17:47 122 header file
32.dat 2003-07-18 17:34 36M digitized signal(s)
32.atr 2012-07-23 16:08 183K reference annotations
30.qrs 2003-07-19 00:54 63K unaudited annotations
30.hea 2003-07-18 19:19 121 header file
30.dat 2003-07-18 19:19 11M digitized signal(s)
30.atr 2012-07-23 16:08 61K reference annotations
28.qrs 2003-07-24 08:56 194K unaudited annotations
28.hea 2003-07-18 21:25 120 header file
28.dat 2003-07-18 21:24 37M digitized signal(s)
28.atr 2012-07-23 16:08 196K reference annotations
26.qrs 2003-07-24 08:47 135K unaudited annotations
26.hea 2003-07-18 17:47 121 header file
26.dat 2003-07-18 17:33 32M digitized signal(s)
26.atr 2012-07-23 16:08 139K reference annotations
25.qrs 2003-07-19 00:54 215K unaudited annotations
25.hea 2003-07-18 19:08 119 header file
25.dat 2003-07-18 19:03 32M digitized signal(s)
25.atr 2012-07-23 16:08 221K reference annotations
24.qrs 2003-07-19 00:54 176K unaudited annotations
24.hea 2003-07-18 17:15 122 header file
24.dat 2003-07-18 16:57 42M digitized signal(s)
24.atr 2012-07-23 16:08 198K reference annotations
23.qrs 2003-07-24 08:36 195K unaudited annotations
23.hea 2003-07-18 18:32 124 header file
23.dat 2003-07-18 18:27 45M digitized signal(s)
23.atr 2012-07-23 16:08 213K reference annotations
22.qrs 2003-07-24 08:31 255K unaudited annotations
22.hea 2003-07-18 22:18 121 header file
22.dat 2003-07-18 22:17 45M digitized signal(s)
22.atr 2012-07-23 16:08 265K reference annotations
21.qrs 2003-07-19 00:53 167K unaudited annotations
21.hea 2003-07-18 19:02 120 header file
21.dat 2003-07-18 18:55 37M digitized signal(s)
21.atr 2012-07-23 16:08 164K reference annotations
208.qrs 2005-05-13 23:45 114K unaudited annotations
208.hea 2005-05-13 23:45 125 header file
208.dat 2005-05-13 23:45 42M digitized signal(s)
208.atr 2012-07-23 16:08 236K reference annotations
207.qrs 2005-05-13 23:45 253K unaudited annotations
207.hea 2005-05-13 23:45 124 header file
207.dat 2005-05-13 23:45 42M digitized signal(s)
207.atr 2012-07-23 16:08 257K reference annotations
206.qrs 2005-05-13 23:45 218K unaudited annotations
206.hea 2005-05-13 23:45 123 header file
206.dat 2005-05-13 23:45 37M digitized signal(s)
206.atr 2012-07-23 16:08 237K reference annotations
205.qrs 2005-05-13 23:45 228K unaudited annotations
205.hea 2005-05-13 23:45 125 header file
205.dat 2005-05-13 23:45 42M digitized signal(s)
205.atr 2012-07-23 16:08 228K reference annotations
204.qrs 2005-05-13 23:45 265K unaudited annotations
204.hea 2005-05-13 23:45 125 header file
204.dat 2005-05-13 23:45 37M digitized signal(s)
204.atr 2012-07-23 16:08 272K reference annotations
203.qrs 2005-05-13 23:45 144K unaudited annotations
203.hea 2005-05-13 23:45 123 header file
203.dat 2005-05-13 23:45 32M digitized signal(s)
203.atr 2012-07-23 16:08 144K reference annotations
202.qrs 2005-05-13 23:45 284K unaudited annotations
202.hea 2005-05-13 23:45 123 header file
202.dat 2005-05-13 23:45 42M digitized signal(s)
202.atr 2012-07-23 16:08 284K reference annotations
201.qrs 2005-05-13 23:45 164K unaudited annotations
201.hea 2005-05-13 23:45 124 header file
201.dat 2005-05-13 23:45 42M digitized signal(s)
201.atr 2012-07-23 16:08 179K reference annotations
200.qrs 2005-05-13 23:45 161K unaudited annotations
200.hea 2005-05-13 23:45 125 header file
200.dat 2005-05-13 23:45 42M digitized signal(s)
200.atr 2012-07-23 16:08 162K reference annotations
20.qrs 2003-07-19 00:53 211K unaudited annotations
20.hea 2014-02-24 15:28 113 header file
20.dat 2003-07-18 16:56 43M digitized signal(s)
20.atr 2012-07-23 16:08 211K reference annotations
19.qrs 2003-07-24 08:17 211K unaudited annotations
19.hea 2003-07-18 17:15 121 header file
19.dat 2003-07-18 16:55 42M digitized signal(s)
19.atr 2012-07-23 16:08 212K reference annotations
18.qrs 2003-07-19 00:53 277K unaudited annotations
18.hea 2003-07-18 17:33 124 header file
18.dat 2003-07-18 17:32 44M digitized signal(s)
18.atr 2012-07-23 16:08 276K reference annotations
17.qrs 2003-07-19 00:53 271K unaudited annotations
17.hea 2003-07-18 19:02 122 header file
17.dat 2003-07-18 18:54 44M digitized signal(s)
17.atr 2012-07-23 16:08 270K reference annotations
16.qrs 2003-07-24 08:13 242K unaudited annotations
16.hea 2003-07-18 22:05 123 header file
16.dat 2003-07-18 22:05 42M digitized signal(s)
16.atr 2012-07-23 16:08 244K reference annotations
15.qrs 2003-07-19 00:52 167K unaudited annotations
15.hea 2003-07-18 21:31 122 header file
15.dat 2003-07-18 21:30 43M digitized signal(s)
15.atr 2012-07-23 16:08 183K reference annotations
13.qrs 2003-07-24 08:05 135K unaudited annotations
13.hea 2003-07-18 17:15 121 header file
13.dat 2003-07-18 16:54 35M digitized signal(s)
13.atr 2012-07-23 16:08 139K reference annotations
122.qrs 2005-05-13 23:45 105K unaudited annotations
122.hea 2005-05-13 23:45 124 header file
122.dat 2005-05-13 23:45 42M digitized signal(s)
122.atr 2012-07-23 16:08 187K reference annotations
121.qrs 2005-05-13 23:45 144K unaudited annotations
121.hea 2005-05-13 23:45 123 header file
121.dat 2005-05-13 23:45 36M digitized signal(s)
121.atr 2012-07-23 16:08 172K reference annotations
120.qrs 2005-05-13 23:45 216K unaudited annotations
120.hea 2005-05-13 23:45 123 header file
120.dat 2005-05-13 23:45 42M digitized signal(s)
120.atr 2012-07-23 16:08 217K reference annotations
12.qrs 2003-07-19 00:52 229K unaudited annotations
12.hea 2003-07-18 18:41 122 header file
12.dat 2003-07-18 18:41 42M digitized signal(s)
12.atr 2012-07-23 16:08 229K reference annotations
119.qrs 2005-05-13 23:45 179K unaudited annotations
119.hea 2005-05-13 23:45 123 header file
119.dat 2005-05-13 23:45 42M digitized signal(s)
119.atr 2012-07-23 16:08 198K reference annotations
118.qrs 2005-05-13 23:45 220K unaudited annotations
118.hea 2005-05-13 23:45 125 header file
118.dat 2005-05-13 23:45 42M digitized signal(s)
118.atr 2012-07-23 16:08 245K reference annotations
117.qrs 2005-05-13 23:45 195K unaudited annotations
117.hea 2005-05-13 23:45 125 header file
117.dat 2005-05-13 23:45 42M digitized signal(s)
117.atr 2012-07-23 16:08 196K reference annotations
116.qrs 2005-05-13 23:45 219K unaudited annotations
116.hea 2005-05-13 23:45 124 header file
116.dat 2005-05-13 23:45 42M digitized signal(s)
116.atr 2012-07-23 16:08 230K reference annotations
115.qrs 2005-05-13 23:45 213K unaudited annotations
115.hea 2005-05-13 23:45 121 header file
115.dat 2005-05-13 23:45 42M digitized signal(s)
115.atr 2012-07-23 16:08 216K reference annotations
114.qrs 2005-05-13 23:45 218K unaudited annotations
114.hea 2005-05-13 23:45 123 header file
114.dat 2005-05-13 23:45 42M digitized signal(s)
114.atr 2012-07-23 16:08 221K reference annotations
113.qrs 2005-05-13 23:45 220K unaudited annotations
113.hea 2005-05-13 23:45 125 header file
113.dat 2005-05-13 23:45 42M digitized signal(s)
113.atr 2012-07-23 16:08 221K reference annotations
112.qrs 2005-05-13 23:45 50K unaudited annotations
112.hea 2005-05-13 23:45 125 header file
112.dat 2005-05-13 23:45 42M digitized signal(s)
112.atr 2012-07-23 16:08 243K reference annotations
111.qrs 2005-05-13 23:45 194K unaudited annotations
111.hea 2005-05-13 23:45 124 header file
111.dat 2005-05-13 23:45 42M digitized signal(s)
111.atr 2012-07-23 16:08 201K reference annotations
110.qrs 2005-05-13 23:45 140K unaudited annotations
110.hea 2005-05-13 23:45 125 header file
110.dat 2005-05-13 23:45 42M digitized signal(s)
110.atr 2012-07-23 16:08 207K reference annotations
11.qrs 2003-07-19 00:52 200K unaudited annotations
11.hea 2003-07-18 18:41 119 header file
11.dat 2003-07-18 18:32 46M digitized signal(s)
11.atr 2012-07-23 16:08 200K reference annotations
105.qrs 2005-05-13 23:45 130K unaudited annotations
105.hea 2005-05-13 23:45 123 header file
105.dat 2005-05-13 23:45 37M digitized signal(s)
105.atr 2012-07-23 16:08 144K reference annotations
104.qrs 2005-05-13 23:45 164K unaudited annotations
104.hea 2005-05-13 23:45 122 header file
104.dat 2005-05-13 23:45 32M digitized signal(s)
104.atr 2012-07-23 16:08 165K reference annotations
103.qrs 2005-05-13 23:45 296K unaudited annotations
103.hea 2005-05-13 23:45 126 header file
103.dat 2005-05-13 23:45 42M digitized signal(s)
103.atr 2012-07-23 16:08 328K reference annotations
102.qrs 2005-05-13 23:45 223K unaudited annotations
102.hea 2005-05-13 23:45 123 header file
102.dat 2005-05-13 23:45 42M digitized signal(s)
102.atr 2012-07-23 16:08 224K reference annotations
101.qrs 2005-05-13 23:45 183K unaudited annotations
101.hea 2005-05-13 23:45 124 header file
101.dat 2005-05-13 23:45 42M digitized signal(s)
101.atr 2012-07-23 16:08 201K reference annotations
100.qrs 2005-05-13 23:45 186K unaudited annotations
100.hea 2005-05-13 23:45 121 header file
100.dat 2005-05-13 23:45 42M digitized signal(s)
100.atr 2012-07-23 16:08 191K reference annotations
10.qrs 2003-07-24 07:51 208K unaudited annotations
10.hea 2003-07-18 17:15 121 header file
10.dat 2003-07-18 16:58 45M digitized signal(s)
10.atr 2012-07-23 16:08 210K reference annotations
08.qrs 2003-07-24 07:49 211K unaudited annotations
08.hea 2003-07-18 18:13 120 header file
08.dat 2003-07-18 18:11 45M digitized signal(s)
08.atr 2012-07-23 16:08 212K reference annotations
07.qrs 2003-07-24 07:45 211K unaudited annotations
07.hea 2003-07-18 18:26 121 header file
07.dat 2003-07-18 18:23 45M digitized signal(s)
07.atr 2012-07-23 16:08 218K reference annotations
06.qrs 2003-07-24 07:42 206K unaudited annotations
06.hea 2003-07-18 21:38 117 header file
06.dat 2003-07-18 21:38 44M digitized signal(s)
06.atr 2012-07-23 16:08 207K reference annotations
05.qrs 2003-07-19 00:51 221K unaudited annotations
05.hea 2003-07-18 18:10 120 header file
05.dat 2003-07-18 18:10 43M digitized signal(s)
05.atr 2012-07-23 16:08 221K reference annotations
03.qrs 2003-07-24 07:34 158K unaudited annotations
03.hea 2003-07-18 18:01 122 header file
03.dat 2003-07-18 17:58 43M digitized signal(s)
03.atr 2012-07-23 16:08 181K reference annotations
01.qrs 2003-07-24 07:26 175K unaudited annotations
01.hea 2003-07-18 21:45 119 header file
01.dat 2003-07-18 21:43 36M digitized signal(s)
01.atr 2012-07-23 16:08 184K reference annotations
00.qrs 2003-07-24 07:23 207K unaudited annotations
00.hea 2003-07-23 13:49 117 header file
00.dat 2003-07-07 15:48 37M digitized signal(s)
00.atr 2012-07-23 16:08 208K reference annotations
Apache/2.4.25 (Debian) mod_auth_pgsql/2.0.3 mod_auth_tkt/2.1.0 OpenSSL/1.0.2u Server at archive.physionet.org Port 80
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