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                             -   
 local.css               28-Oct-2015 23:01  3.1K  
 DOI                     21-Sep-2015 19:00   19   
 SHA256SUMS              18-Sep-2007 18:37  7.8K  
 SHA1SUMS                13-Jul-2005 04:13  5.4K  
 MD5SUMS                 13-Jul-2005 04:13  4.5K  
 ANNOTATORS              01-Mar-2003 17:04   31   list of annotators
 iaf8_tva.qrs            01-Mar-2003 16:59  172   unaudited annotations
 iaf8_svc.qrs            01-Mar-2003 16:59  178   unaudited annotations
 iaf8_ivc.qrs            01-Mar-2003 16:59  194   unaudited annotations
 iaf8_afw.qrs            01-Mar-2003 16:59  1.6K  unaudited annotations
 iaf7_tva.qrs            01-Mar-2003 16:59  702   unaudited annotations
 iaf7_svc.qrs            01-Mar-2003 16:59  762   unaudited annotations
 iaf7_ivc.qrs            01-Mar-2003 16:59  570   unaudited annotations
 iaf7_afw.qrs            01-Mar-2003 16:59  3.2K  unaudited annotations
 iaf6_tva.qrs            01-Mar-2003 16:59  272   unaudited annotations
 iaf6_svc.qrs            01-Mar-2003 16:59  222   unaudited annotations
 iaf6_ivc.qrs            01-Mar-2003 16:59  250   unaudited annotations
 iaf6_afw.qrs            01-Mar-2003 16:59  1.5K  unaudited annotations
 iaf5_tva.qrs            01-Mar-2003 16:59  288   unaudited annotations
 iaf5_svc.qrs            01-Mar-2003 16:59  826   unaudited annotations
 iaf5_ivc.qrs            01-Mar-2003 16:59  322   unaudited annotations
 iaf5_afw.qrs            01-Mar-2003 16:59  3.2K  unaudited annotations
 iaf4_tva.qrs            01-Mar-2003 16:59  250   unaudited annotations
 iaf4_svc.qrs            01-Mar-2003 16:59  234   unaudited annotations
 iaf4_ivc.qrs            01-Mar-2003 16:59  258   unaudited annotations
 iaf4_afw.qrs            01-Mar-2003 16:59  7.1K  unaudited annotations
 iaf3_tva.qrs            01-Mar-2003 16:59  144   unaudited annotations
 iaf3_svc.qrs            01-Mar-2003 16:59  308   unaudited annotations
 iaf3_ivc.qrs            01-Mar-2003 16:59  230   unaudited annotations
 iaf3_afw.qrs            01-Mar-2003 16:59  2.5K  unaudited annotations
 iaf2_tva.qrs            01-Mar-2003 16:59  224   unaudited annotations
 iaf2_svc.qrs            01-Mar-2003 16:59  194   unaudited annotations
 iaf2_ivc.qrs            01-Mar-2003 16:59  234   unaudited annotations
 iaf2_afw.qrs            01-Mar-2003 16:59  856   unaudited annotations
 iaf1_tva.qrs            01-Mar-2003 16:59  170   unaudited annotations
 iaf1_svc.qrs            01-Mar-2003 16:59  204   unaudited annotations
 iaf1_ivc.qrs            01-Mar-2003 16:59  154   unaudited annotations
 iaf1_afw.qrs            01-Mar-2003 16:59  494   unaudited annotations
 figures/                01-Mar-2003 15:48    -   
 RECORDS                 01-Mar-2003 14:57  288   list of record names
 iaf8_tva.hea            01-Mar-2003 14:56  485   header file
 iaf8_tva.dat            01-Mar-2003 14:56  875K  digitized signal(s)
 iaf8_svc.hea            01-Mar-2003 14:56  481   header file
 iaf8_svc.dat            01-Mar-2003 14:56  805K  digitized signal(s)
 iaf8_ivc.hea            01-Mar-2003 14:56  478   header file
 iaf8_ivc.dat            01-Mar-2003 14:56  922K  digitized signal(s)
 iaf8_afw.hea            01-Mar-2003 14:56  520   header file
 iaf8_afw.dat            01-Mar-2003 14:56  8.2M  digitized signal(s)
 iaf7_tva.hea            01-Mar-2003 14:56  493   header file
 iaf7_tva.dat            01-Mar-2003 14:56  1.8M  digitized signal(s)
 iaf7_svc.hea            01-Mar-2003 14:56  495   header file
 iaf7_svc.dat            01-Mar-2003 14:56  2.2M  digitized signal(s)
 iaf7_ivc.hea            01-Mar-2003 14:56  497   header file
 iaf7_ivc.dat            01-Mar-2003 14:56  1.7M  digitized signal(s)
 iaf7_afw.hea            01-Mar-2003 14:56  529   header file
 iaf7_afw.dat            01-Mar-2003 14:56   10M  digitized signal(s)
 iaf6_tva.hea            01-Mar-2003 14:56  508   header file
 iaf6_tva.dat            01-Mar-2003 14:56  852K  digitized signal(s)
 iaf6_svc.hea            01-Mar-2003 14:56  510   header file
 iaf6_svc.dat            01-Mar-2003 14:56  766K  digitized signal(s)
 iaf6_ivc.hea            01-Mar-2003 14:56  511   header file
 iaf6_ivc.dat            01-Mar-2003 14:56  906K  digitized signal(s)
 iaf6_afw.hea            01-Mar-2003 14:56  544   header file
 iaf6_afw.dat            01-Mar-2003 14:56  5.5M  digitized signal(s)
 iaf5_tva.hea            01-Mar-2003 14:56  482   header file
 iaf5_tva.dat            01-Mar-2003 14:56  820K  digitized signal(s)
 iaf5_svc.hea            01-Mar-2003 14:56  491   header file
 iaf5_svc.dat            01-Mar-2003 14:56  2.8M  digitized signal(s)
 iaf5_ivc.hea            01-Mar-2003 14:56  482   header file
 iaf5_ivc.dat            01-Mar-2003 14:56  1.0M  digitized signal(s)
 iaf5_afw.hea            01-Mar-2003 14:56  527   header file
 iaf5_afw.dat            01-Mar-2003 14:56   12M  digitized signal(s)
 iaf4_tva.hea            01-Mar-2003 14:56  506   header file
 iaf4_tva.dat            01-Mar-2003 14:56  1.0M  digitized signal(s)
 iaf4_svc.hea            01-Mar-2003 14:56  502   header file
 iaf4_svc.dat            01-Mar-2003 14:56  906K  digitized signal(s)
 iaf4_ivc.hea            01-Mar-2003 14:56  506   header file
 iaf4_ivc.dat            01-Mar-2003 14:56  948K  digitized signal(s)
 iaf4_afw.hea            01-Mar-2003 14:56  540   header file
 iaf4_afw.dat            01-Mar-2003 14:56   21M  digitized signal(s)
 iaf3_tva.hea            01-Mar-2003 14:56  508   header file
 iaf3_tva.dat            01-Mar-2003 14:56  750K  digitized signal(s)
 iaf3_svc.hea            01-Mar-2003 14:56  509   header file
 iaf3_svc.dat            01-Mar-2003 14:56  1.5M  digitized signal(s)
 iaf3_ivc.hea            01-Mar-2003 14:56  514   header file
 iaf3_ivc.dat            01-Mar-2003 14:56  1.0M  digitized signal(s)
 iaf3_afw.hea            01-Mar-2003 14:56  534   header file
 iaf3_afw.dat            01-Mar-2003 14:56   12M  digitized signal(s)
 iaf2_tva.hea            01-Mar-2003 14:56  510   header file
 iaf2_tva.dat            01-Mar-2003 14:56  1.0M  digitized signal(s)
 iaf2_svc.hea            01-Mar-2003 14:56  511   header file
 iaf2_svc.dat            01-Mar-2003 14:56  852K  digitized signal(s)
 iaf2_ivc.hea            01-Mar-2003 14:56  507   header file
 iaf2_ivc.dat            01-Mar-2003 14:56  1.0M  digitized signal(s)
 iaf2_afw.hea            01-Mar-2003 14:56  543   header file
 iaf2_afw.dat            01-Mar-2003 14:56  3.5M  digitized signal(s)
 iaf1_tva.hea            01-Mar-2003 14:56  499   header file
 iaf1_tva.dat            01-Mar-2003 14:56  930K  digitized signal(s)
 iaf1_svc.hea            01-Mar-2003 14:56  501   header file
 iaf1_svc.dat            01-Mar-2003 14:56  898K  digitized signal(s)
 iaf1_ivc.hea            01-Mar-2003 14:56  495   header file
 iaf1_ivc.dat            01-Mar-2003 14:56  805K  digitized signal(s)
 iaf1_afw.hea            01-Mar-2003 14:56  537   header file
 iaf1_afw.dat            01-Mar-2003 14:56  2.4M  digitized signal(s)