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

PR Walsh; OJ Escalona; Vivek Kodoth; NC Castro; David McEneaney; Ernest Lau; Ganesh Manoharan

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

PR Walsh, OJ Escalona, Vivek Kodoth, NC Castro, David McEneaney, Ernest Lau, Ganesh Manoharan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 (p0.05 for both waveforms). A statistically significant decrease in ICR during the first three shocks wasidentified as a predictive marker for successful cardioversion outcome.

Original language	English
Title of host publication	Unknown Host Publication
Publisher	IEEE Xplore
Pages	611-614
Number of pages	4
Volume	40
ISBN (Print)	978-1-4799-0884-4
Publication status	Published (in print/issue) - 29 Dec 2013
Event	Computing in Cardiology (CinC), 2013 - Zaragoza, Spain Duration: 29 Dec 2013 → … http://www.cinc2013.org

Conference

Conference	Computing in Cardiology (CinC), 2013
Period	29/12/13 → …
Internet address	http://www.cinc2013.org

Keywords

Intracardiac resistance variation
low-tilt waveform
AF cardioversion
step-up defibrillation protocol
monophasic waveform
biphasic defibrillation
RF defibrillator
bio-impedance.

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Walsh, PR., Escalona, OJ., Kodoth, V., Castro, NC., McEneaney, D., Lau, E., & Manoharan, G. (2013). Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation. In Unknown Host Publication (Vol. 40, pp. 611-614). IEEE Xplore. http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6713451&sortType%3Ddesc_p_Publication_Year%26queryText%3DEscalona%2C+O

@inproceedings{2ac32220af044c5595ca91c202dadcae,

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

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 (p0.05 for both waveforms). A statistically significant decrease in ICR during the first three shocks wasidentified as a predictive marker for successful cardioversion outcome.",

keywords = "Intracardiac resistance variation, low-tilt waveform, AF cardioversion, step-up defibrillation protocol, monophasic waveform, biphasic defibrillation, RF defibrillator, bio-impedance.",

author = "PR Walsh and OJ Escalona and Vivek Kodoth and NC Castro and David McEneaney and Ernest Lau and Ganesh Manoharan",

year = "2013",

month = dec,

day = "29",

language = "English",

isbn = "978-1-4799-0884-4",

volume = "40",

pages = "611--614",

booktitle = "Unknown Host Publication",

publisher = "IEEE Xplore",

address = "United States",

note = "Computing in Cardiology (CinC), 2013 ; Conference date: 29-12-2013",

url = "http://www.cinc2013.org",

}

Walsh, PR, Escalona, OJ, Kodoth, V, Castro, NC, McEneaney, D, Lau, E & Manoharan, G 2013, Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation. in Unknown Host Publication. vol. 40, IEEE Xplore, pp. 611-614, Computing in Cardiology (CinC), 2013, 29/12/13. <http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6713451&sortType%3Ddesc_p_Publication_Year%26queryText%3DEscalona%2C+O>

TY - GEN

T1 - Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation.

AU - Walsh, PR

AU - Escalona, OJ

AU - Kodoth, Vivek

AU - Castro, NC

AU - McEneaney, David

AU - Lau, Ernest

AU - Manoharan, Ganesh

PY - 2013/12/29

Y1 - 2013/12/29

N2 - 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 (p0.05 for both waveforms). A statistically significant decrease in ICR during the first three shocks wasidentified as a predictive marker for successful cardioversion outcome.

AB - 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 (p0.05 for both waveforms). A statistically significant decrease in ICR during the first three shocks wasidentified as a predictive marker for successful cardioversion outcome.

KW - Intracardiac resistance variation

KW - low-tilt waveform

KW - AF cardioversion

KW - step-up defibrillation protocol

KW - monophasic waveform

KW - biphasic defibrillation

KW - RF defibrillator

KW - bio-impedance.

M3 - Conference contribution

SN - 978-1-4799-0884-4

VL - 40

SP - 611

EP - 614

BT - Unknown Host Publication

PB - IEEE Xplore

T2 - Computing in Cardiology (CinC), 2013

Y2 - 29 December 2013

ER -

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

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