Discrimination of atrial fibrillation from regular atrial rhythms by spatial precision of local activation direction

Adam T. Schoenwald; Alan V. Sahakian; Steven Swiryn

doi:10.1109/10.634648

Discrimination of atrial fibrillation from regular atrial rhythms by spatial precision of local activation direction

Adam T. Schoenwald, Alan V. Sahakian^*, Steven Swiryn

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This study tests the hypothesis that atrial fibrillation (AFib) can be discriminated from regular atrial rhythms by a measure of the variation in local activation direction. Human endocardial atrial recordings of AFib, sinus rhythm, atrial flutter, and supraventricular tachycardia were collected using a catheter with orthogonally placed electrodes, and the direction of each activation was calculated using methods previously described by our laboratory. Each recording was divided into segments containing 100 activations, and the spatial precision for each segment was calculated in three dimensions, as well as in each of the three two-dimensional (2-D) planes. The three-dimensional (3-D) spatial precision for 1161 segments of AFib in 11 recordings ranged from 0.09-0.85 (mean = 0.45), whereas the spatial precision for 138 segments of regular rhythms in 28 recordings was ≤0.91 in all but four instances. The 2-D spatial precision values overlapped for all rhythms. The results indicate that 3-D spatial precision of local activation direction is a useful discriminator of AFib.

Original language	English (US)
Pages (from-to)	958-963
Number of pages	6
Journal	IEEE Transactions on Biomedical Engineering
Volume	44
Issue number	10
DOIs	https://doi.org/10.1109/10.634648
State	Published - Oct 1997

Funding

Manuscript received July 12, 1995; revised May 6, 1997. This work was supported in part by the Hartman Family Fund, the Virginia and Robert Neuschel Fund, and a Whitaker Foundation Graduate Fellowship. Asterisk indicates corresponding author. Mr. Schoenwald is a member of Eta Kappa Nu Electrical Engineering honorary society, Pi Tau Sigma Mechanical Engineering honorary society, and is the recipient of a Whitaker Foundation Graduate Fellowship.

Keywords

Atrial fibrillation
Cardiac arrhythmias
Cardiac electrophysiology
Cardiac pacemakers
Implantable cardioverters
Implantable defibrillators
Implantable electrodes
Spatial precision

ASJC Scopus subject areas

Biomedical Engineering

Access to Document

10.1109/10.634648

Cite this

@article{5dbe631fc340477ebdf9e5eff3d27ade,

title = "Discrimination of atrial fibrillation from regular atrial rhythms by spatial precision of local activation direction",

abstract = "This study tests the hypothesis that atrial fibrillation (AFib) can be discriminated from regular atrial rhythms by a measure of the variation in local activation direction. Human endocardial atrial recordings of AFib, sinus rhythm, atrial flutter, and supraventricular tachycardia were collected using a catheter with orthogonally placed electrodes, and the direction of each activation was calculated using methods previously described by our laboratory. Each recording was divided into segments containing 100 activations, and the spatial precision for each segment was calculated in three dimensions, as well as in each of the three two-dimensional (2-D) planes. The three-dimensional (3-D) spatial precision for 1161 segments of AFib in 11 recordings ranged from 0.09-0.85 (mean = 0.45), whereas the spatial precision for 138 segments of regular rhythms in 28 recordings was ≤0.91 in all but four instances. The 2-D spatial precision values overlapped for all rhythms. The results indicate that 3-D spatial precision of local activation direction is a useful discriminator of AFib.",

keywords = "Atrial fibrillation, Cardiac arrhythmias, Cardiac electrophysiology, Cardiac pacemakers, Implantable cardioverters, Implantable defibrillators, Implantable electrodes, Spatial precision",

author = "Schoenwald, {Adam T.} and Sahakian, {Alan V.} and Steven Swiryn",

note = "Funding Information: Manuscript received July 12, 1995; revised May 6, 1997. This work was supported in part by the Hartman Family Fund, the Virginia and Robert Neuschel Fund, and a Whitaker Foundation Graduate Fellowship. Asterisk indicates corresponding author. Funding Information: Mr. Schoenwald is a member of Eta Kappa Nu Electrical Engineering honorary society, Pi Tau Sigma Mechanical Engineering honorary society, and is the recipient of a Whitaker Foundation Graduate Fellowship.",

year = "1997",

month = oct,

doi = "10.1109/10.634648",

language = "English (US)",

volume = "44",

pages = "958--963",

journal = "IEEE Transactions on Biomedical Engineering",

issn = "0018-9294",

publisher = "IEEE Computer Society",

number = "10",

}

TY - JOUR

T1 - Discrimination of atrial fibrillation from regular atrial rhythms by spatial precision of local activation direction

AU - Schoenwald, Adam T.

AU - Sahakian, Alan V.

AU - Swiryn, Steven

N1 - Funding Information: Manuscript received July 12, 1995; revised May 6, 1997. This work was supported in part by the Hartman Family Fund, the Virginia and Robert Neuschel Fund, and a Whitaker Foundation Graduate Fellowship. Asterisk indicates corresponding author. Funding Information: Mr. Schoenwald is a member of Eta Kappa Nu Electrical Engineering honorary society, Pi Tau Sigma Mechanical Engineering honorary society, and is the recipient of a Whitaker Foundation Graduate Fellowship.

PY - 1997/10

Y1 - 1997/10

N2 - This study tests the hypothesis that atrial fibrillation (AFib) can be discriminated from regular atrial rhythms by a measure of the variation in local activation direction. Human endocardial atrial recordings of AFib, sinus rhythm, atrial flutter, and supraventricular tachycardia were collected using a catheter with orthogonally placed electrodes, and the direction of each activation was calculated using methods previously described by our laboratory. Each recording was divided into segments containing 100 activations, and the spatial precision for each segment was calculated in three dimensions, as well as in each of the three two-dimensional (2-D) planes. The three-dimensional (3-D) spatial precision for 1161 segments of AFib in 11 recordings ranged from 0.09-0.85 (mean = 0.45), whereas the spatial precision for 138 segments of regular rhythms in 28 recordings was ≤0.91 in all but four instances. The 2-D spatial precision values overlapped for all rhythms. The results indicate that 3-D spatial precision of local activation direction is a useful discriminator of AFib.

AB - This study tests the hypothesis that atrial fibrillation (AFib) can be discriminated from regular atrial rhythms by a measure of the variation in local activation direction. Human endocardial atrial recordings of AFib, sinus rhythm, atrial flutter, and supraventricular tachycardia were collected using a catheter with orthogonally placed electrodes, and the direction of each activation was calculated using methods previously described by our laboratory. Each recording was divided into segments containing 100 activations, and the spatial precision for each segment was calculated in three dimensions, as well as in each of the three two-dimensional (2-D) planes. The three-dimensional (3-D) spatial precision for 1161 segments of AFib in 11 recordings ranged from 0.09-0.85 (mean = 0.45), whereas the spatial precision for 138 segments of regular rhythms in 28 recordings was ≤0.91 in all but four instances. The 2-D spatial precision values overlapped for all rhythms. The results indicate that 3-D spatial precision of local activation direction is a useful discriminator of AFib.

KW - Atrial fibrillation

KW - Cardiac arrhythmias

KW - Cardiac electrophysiology

KW - Cardiac pacemakers

KW - Implantable cardioverters

KW - Implantable defibrillators

KW - Implantable electrodes

KW - Spatial precision

UR - http://www.scopus.com/inward/record.url?scp=0031260044&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031260044&partnerID=8YFLogxK

U2 - 10.1109/10.634648

DO - 10.1109/10.634648

M3 - Article

C2 - 9311165

AN - SCOPUS:0031260044

SN - 0018-9294

VL - 44

SP - 958

EP - 963

JO - IEEE Transactions on Biomedical Engineering

JF - IEEE Transactions on Biomedical Engineering

IS - 10

ER -

Discrimination of atrial fibrillation from regular atrial rhythms by spatial precision of local activation direction

Abstract

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this