Development and validation of a model of atrioventricular conduction in atrial fibrillation based on junctional intracardiac electrograms

Author

Roka, A. ; Merkely, B.

Author_Institution

Semmelweis Univ., Budapest

fYear

2008

fDate

14-17 Sept. 2008

Firstpage

405

Lastpage

408

Abstract

Ventricular activation in atrial fibrillation (AF) is irregular. Our aim was to develop and validate a new model of atrioventricular conduction (AVC) in AF. Intracardiac electrograms (IEGM) were recorded in 4 dogs in AF near the AV junction. Four timing intervals with 8 parameters were used to create a model of AVC: absolute and relative refractory periods, slow and normal conduction times. 26406 RR intervals were used to calculate and 2142 intervals to validate the prediction accuracy. Using the optimal combination of the parameters the RR interval prediction had an average error of 99plusmn80 ms, validation showed a value of 99plusmn77 ms. In conclusion, prediction of RR intervals in AF is possible using IEGM near the AV junction.

Keywords

cardiovascular system; diseases; electrocardiography; physiological models; 2142 intervals; 26406 RR intervals; AVC; IEGM; atrial fibrillation; atrioventricular conduction; intracardiac electrograms; junctional intracardiac electrograms; time 10 ms to 179 ms; Accuracy; Atrial fibrillation; Automatic voltage control; Catheters; Delay; Dogs; Electrodes; Performance analysis; Predictive models; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 2008

Conference_Location

Bologna

ISSN

0276-6547

Print_ISBN

978-1-4244-3706-1

Type

conf

DOI

10.1109/CIC.2008.4749064

Filename

4749064