Ulster University Logo

Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation.

Walsh, PR, Escalona, OJ, Kodoth, Vivek, Castro, NC, McEneaney, David, Lau, Ernest and Manoharan, Ganesh (2013) Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation. In: Computing in Cardiology (CinC), 2013, Zaragoza, Spain. IEEE Xplore. Vol 40 4 pp. [Conference contribution]

Full text not available from this repository.

URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6713451&sortType%3Ddesc_p_Publication_Year%26queryText%3DEscalona%2C+O

Abstract

Intracardiac resistance (ICR) is an important determinant of treatment success during internalcardioversion of atrial fibrillation (AF). However, there is limited data on dynamic changes in ICR as a predictor of cardioversion outcome. In this retrospective study, thirty patients with persistent AF were randomised to treatment with a biphasic or monophasic energy step-up cardioversion protocol (50V-to-300V in 50V steps). ICR was computed for each patient and a student t-test used to investigate the significance of dynamic changes in ICR between successive shocks delivered. For both biphasic and monophasic waveforms, all patients who cardioverted exhibited a significant reduction in ICR between the first and third shock (p<O.OI and p<0.003, respectively). Yet, critically, a significant reduction in ICR was absent for all patients who failed to cardiovert (p>0.05 for both waveforms). A statistically significant decrease in ICR during the first three shocks wasidentified as a predictive marker for successful cardioversion outcome.

Item Type:Conference contribution (Paper)
Keywords:Intracardiac resistance variation, low-tilt waveform, AF cardioversion, step-up defibrillation protocol, monophasic waveform, biphasic defibrillation, RF defibrillator, bio-impedance.
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:28535
Deposited By: Professor Omar Escalona
Deposited On:12 Feb 2014 13:39
Last Modified:12 Feb 2014 13:39

Repository Staff Only: item control page