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 proceedingConference contribution

5 Citations (Scopus)

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.
LanguageEnglish
Title of host publicationUnknown Host Publication
Pages611-614
Number of pages4
Volume40
Publication statusPublished - 29 Dec 2013
EventComputing in Cardiology (CinC), 2013 - Zaragoza, Spain
Duration: 29 Dec 2013 → …
http://www.cinc2013.org

Conference

ConferenceComputing in Cardiology (CinC), 2013
Period29/12/13 → …
Internet address

Fingerprint

Electric Countershock
Atrial Fibrillation
Shock
Retrospective Studies
Students
Therapeutics

Keywords

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

Cite this

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)
Walsh, PR ; Escalona, OJ ; Kodoth, Vivek ; Castro, NC ; McEneaney, David ; Lau, Ernest ; Manoharan, Ganesh. / Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation. Unknown Host Publication. Vol. 40 2013. pp. 611-614
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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.",
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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, Computing in Cardiology (CinC), 2013, 29/12/13.

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; Manoharan, Ganesh.

Unknown Host Publication. Vol. 40 2013. p. 611-614.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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

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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.

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KW - low-tilt waveform

KW - AF cardioversion

KW - step-up defibrillation protocol

KW - monophasic waveform

KW - biphasic defibrillation

KW - RF defibrillator

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Walsh PR, Escalona OJ, Kodoth V, Castro NC, McEneaney D, Lau E et al. Dynamic Changes in Intracardiac Resistance as a Predictive Marker during Internal Cardioversion of Atrial Fibrillation. In Unknown Host Publication. Vol. 40. 2013. p. 611-614