Intracardiac Atrial Fibrillation Database

This database consists of endocardial recordings from the right atria of 8 patients in atrial fibrillation or flutter. A decapolar catheter with 2-5-2mm spacing (7mm spacing between bipoles) was placed in four separate regions of the heart. In each region, the 5 bipolar signals were recorded along with 3 surface ECG leads. Data were digitized at 1kHz. Catheter bipoles are labeled (distal to proximal) CS12, CS34, ..., CS90. Regions are:

SVC

The distal tip of the catheter (CS12) is close to the annulus of the superior vena cava

IVC

The proximal tip of the catheter (CS90) is close to the annulus of the inferior vena cava

TVA

The distal tip (CS12) is close to the tricuspid valve annulus

AFW

The entire catheter rests against the atrial free wall

The figure at left shows approximate catheter placement in a model heart (click on any panel at left, or on the links below, for a larger view):

A)

Anterior view of a heart model, with the interior of the right atrium (RA) and right ventricle (RV) exposed.

B)

Catheter placement for SVC, where the distal tip is just inferior to the annulus of the superior vena cava, and the catheter is against the posterior wall of the atrium. Eight poles (black marks) of the decapolar catheter model (copper wire) are visible.

C)

Placement for TVA, where the distal tip is on the tricuspid valve annulus and the electrodes are against the septal wall.

D)

Placement for IVC, with the proximal catheter end just superior to the annulus of the inferior vena cava, and the electrodes against the posterior wall.

E)

Placement for AFW, with the catheter against the atrial free wall (which is hinged open here).

The database includes a set of four records (one for each placement) for each of the eight patients. The name of each record identifies the patient (iaf1, iaf2, ..., iaf8) and the placement of the catheter (svc, ivc, tva, afw). Each record contains eight signals (intracardiac: CS12 - CS90, or ECG: I, II, V1, aVF). Each signal is sampled at 1 kHz with 14-bit resolution; the signal amplitudes are uncalibrated.

The atrial free wall (afw) records are considerably longer than those for the other regions, and include the effects of drug delivery and washout. During these records, patients iaf1, iaf2, iaf6, and iaf8 received adenosine, and patients iaf3, iaf4, iaf5, and iaf7 received Isuprel; the drug, dosage, and delivery time(s) are noted in the .hea files of the afw records. Note that these times are approximate, based on clinical notes taken during the procedure.

The .qrs annotation files were produced using sqrs, and have not been corrected; they may be useful for beginning a study of these recordings.

Acknowledgements

We wish to thank Jon Peterson and Dave Kynor of Creare, Inc. for their generous contribution of these recordings and for the notes and figures above.

 Name                    Last modified      Size  Description
 Parent Directory                             -   
 figures/                2003-03-01 09:48    -   
 DOI                     2015-09-21 13:00   19   
 ANNOTATORS              2003-03-01 11:04   31   list of annotators
 iaf3_tva.qrs            2003-03-01 10:59  144   unaudited annotations
 iaf1_ivc.qrs            2003-03-01 10:59  154   unaudited annotations
 iaf1_tva.qrs            2003-03-01 10:59  170   unaudited annotations
 iaf8_tva.qrs            2003-03-01 10:59  172   unaudited annotations
 iaf8_svc.qrs            2003-03-01 10:59  178   unaudited annotations
 iaf2_svc.qrs            2003-03-01 10:59  194   unaudited annotations
 iaf8_ivc.qrs            2003-03-01 10:59  194   unaudited annotations
 iaf1_svc.qrs            2003-03-01 10:59  204   unaudited annotations
 iaf6_svc.qrs            2003-03-01 10:59  222   unaudited annotations
 iaf2_tva.qrs            2003-03-01 10:59  224   unaudited annotations
 iaf3_ivc.qrs            2003-03-01 10:59  230   unaudited annotations
 iaf2_ivc.qrs            2003-03-01 10:59  234   unaudited annotations
 iaf4_svc.qrs            2003-03-01 10:59  234   unaudited annotations
 iaf4_tva.qrs            2003-03-01 10:59  250   unaudited annotations
 iaf6_ivc.qrs            2003-03-01 10:59  250   unaudited annotations
 iaf4_ivc.qrs            2003-03-01 10:59  258   unaudited annotations
 iaf6_tva.qrs            2003-03-01 10:59  272   unaudited annotations
 RECORDS                 2003-03-01 08:57  288   list of record names
 iaf5_tva.qrs            2003-03-01 10:59  288   unaudited annotations
 iaf3_svc.qrs            2003-03-01 10:59  308   unaudited annotations
 iaf5_ivc.qrs            2003-03-01 10:59  322   unaudited annotations
 iaf8_ivc.hea            2003-03-01 08:56  478   header file
 iaf8_svc.hea            2003-03-01 08:56  481   header file
 iaf5_ivc.hea            2003-03-01 08:56  482   header file
 iaf5_tva.hea            2003-03-01 08:56  482   header file
 iaf8_tva.hea            2003-03-01 08:56  485   header file
 iaf5_svc.hea            2003-03-01 08:56  491   header file
 iaf7_tva.hea            2003-03-01 08:56  493   header file
 iaf1_afw.qrs            2003-03-01 10:59  494   unaudited annotations
 iaf1_ivc.hea            2003-03-01 08:56  495   header file
 iaf7_svc.hea            2003-03-01 08:56  495   header file
 iaf7_ivc.hea            2003-03-01 08:56  497   header file
 iaf1_tva.hea            2003-03-01 08:56  499   header file
 iaf1_svc.hea            2003-03-01 08:56  501   header file
 iaf4_svc.hea            2003-03-01 08:56  502   header file
 iaf4_ivc.hea            2003-03-01 08:56  506   header file
 iaf4_tva.hea            2003-03-01 08:56  506   header file
 iaf2_ivc.hea            2003-03-01 08:56  507   header file
 iaf3_tva.hea            2003-03-01 08:56  508   header file
 iaf6_tva.hea            2003-03-01 08:56  508   header file
 iaf3_svc.hea            2003-03-01 08:56  509   header file
 iaf2_tva.hea            2003-03-01 08:56  510   header file
 iaf6_svc.hea            2003-03-01 08:56  510   header file
 iaf2_svc.hea            2003-03-01 08:56  511   header file
 iaf6_ivc.hea            2003-03-01 08:56  511   header file
 iaf3_ivc.hea            2003-03-01 08:56  514   header file
 iaf8_afw.hea            2003-03-01 08:56  520   header file
 iaf5_afw.hea            2003-03-01 08:56  527   header file
 iaf7_afw.hea            2003-03-01 08:56  529   header file
 iaf3_afw.hea            2003-03-01 08:56  534   header file
 iaf1_afw.hea            2003-03-01 08:56  537   header file
 iaf4_afw.hea            2003-03-01 08:56  540   header file
 iaf2_afw.hea            2003-03-01 08:56  543   header file
 iaf6_afw.hea            2003-03-01 08:56  544   header file
 iaf7_ivc.qrs            2003-03-01 10:59  570   unaudited annotations
 iaf7_tva.qrs            2003-03-01 10:59  702   unaudited annotations
 iaf7_svc.qrs            2003-03-01 10:59  762   unaudited annotations
 iaf5_svc.qrs            2003-03-01 10:59  826   unaudited annotations
 iaf2_afw.qrs            2003-03-01 10:59  856   unaudited annotations
 iaf6_afw.qrs            2003-03-01 10:59  1.5K  unaudited annotations
 iaf8_afw.qrs            2003-03-01 10:59  1.6K  unaudited annotations
 iaf3_afw.qrs            2003-03-01 10:59  2.5K  unaudited annotations
 iaf7_afw.qrs            2003-03-01 10:59  3.2K  unaudited annotations
 iaf5_afw.qrs            2003-03-01 10:59  3.2K  unaudited annotations
 MD5SUMS                 2005-07-12 22:13  4.5K  
 SHA1SUMS                2005-07-12 22:13  5.4K  
 iaf4_afw.qrs            2003-03-01 10:59  7.1K  unaudited annotations
 SHA256SUMS              2007-09-18 12:37  7.8K  
 iaf3_tva.dat            2003-03-01 08:56  750K  digitized signal(s)
 iaf6_svc.dat            2003-03-01 08:56  766K  digitized signal(s)
 iaf1_ivc.dat            2003-03-01 08:56  805K  digitized signal(s)
 iaf8_svc.dat            2003-03-01 08:56  805K  digitized signal(s)
 iaf5_tva.dat            2003-03-01 08:56  820K  digitized signal(s)
 iaf2_svc.dat            2003-03-01 08:56  852K  digitized signal(s)
 iaf6_tva.dat            2003-03-01 08:56  852K  digitized signal(s)
 iaf8_tva.dat            2003-03-01 08:56  875K  digitized signal(s)
 iaf1_svc.dat            2003-03-01 08:56  898K  digitized signal(s)
 iaf4_svc.dat            2003-03-01 08:56  906K  digitized signal(s)
 iaf6_ivc.dat            2003-03-01 08:56  906K  digitized signal(s)
 iaf8_ivc.dat            2003-03-01 08:56  922K  digitized signal(s)
 iaf1_tva.dat            2003-03-01 08:56  930K  digitized signal(s)
 iaf4_ivc.dat            2003-03-01 08:56  948K  digitized signal(s)
 iaf5_ivc.dat            2003-03-01 08:56  1.0M  digitized signal(s)
 iaf2_tva.dat            2003-03-01 08:56  1.0M  digitized signal(s)
 iaf3_ivc.dat            2003-03-01 08:56  1.0M  digitized signal(s)
 iaf2_ivc.dat            2003-03-01 08:56  1.0M  digitized signal(s)
 iaf4_tva.dat            2003-03-01 08:56  1.0M  digitized signal(s)
 iaf3_svc.dat            2003-03-01 08:56  1.5M  digitized signal(s)
 iaf7_ivc.dat            2003-03-01 08:56  1.7M  digitized signal(s)
 iaf7_tva.dat            2003-03-01 08:56  1.8M  digitized signal(s)
 iaf7_svc.dat            2003-03-01 08:56  2.2M  digitized signal(s)
 iaf1_afw.dat            2003-03-01 08:56  2.4M  digitized signal(s)
 iaf5_svc.dat            2003-03-01 08:56  2.8M  digitized signal(s)
 iaf2_afw.dat            2003-03-01 08:56  3.5M  digitized signal(s)
 iaf6_afw.dat            2003-03-01 08:56  5.5M  digitized signal(s)
 iaf8_afw.dat            2003-03-01 08:56  8.2M  digitized signal(s)
 iaf7_afw.dat            2003-03-01 08:56   10M  digitized signal(s)
 iaf5_afw.dat            2003-03-01 08:56   12M  digitized signal(s)
 iaf3_afw.dat            2003-03-01 08:56   12M  digitized signal(s)
 iaf4_afw.dat            2003-03-01 08:56   21M  digitized signal(s)