Anatomic characterization of endocardial substrate for hemodynamically stable reentrant ventricular tachycardia: identification of endocardial conducting channels

Heart Rhythm : the Official Journal of the Heart Rhythm Society
Henry H HsiaFrancis E Marchlinski

Abstract

Detailed anatomic characterization of endocardial substrate of ventricular tachycardia (VT) is limited. The purpose of this study was to determine the endocardial dimensions and local electrogram voltage characteristics of the reentrant circuit. VT-related conducting channels corresponding to zones of slow conduction may be identified. Electroanatomic mapping was performed in 26 patients with uniform VT. Entrainment mapping was performed in 53 VTs, of which 19 entrance, 37 isthmus, 48 exit, and 32 outer loop sites were identified. The color display of voltage maps was adjusted to identify conducting channels associated with VT circuits. A conducting channel was defined as a path of multiple orthodromically activated sites within the VT circuit that demonstrated an electrogram amplitude higher than that of surrounding areas as evidenced by voltage color differences. Forty-seven (84%) of 56 entrance or isthmus sites were located within dense scar (<0.5 mV). Nearly all exits (92%) were located in abnormal endocardium (<1.5 mV), with more than half (54%) located in the border zone (0.5-1.5 mV). VT-related conducting channels was identified in 18 of 32 VTs with detailed mapping (average length 32 +/- 22 mm). The voltage threshold in...Continue Reading

References

Dec 1, 1985·Journal of the American College of Cardiology·J M MillerM E Josephson
Apr 1, 1996·Journal of the American College of Cardiology·J M de BakkerJ R Lahpor
Mar 1, 2000·Journal of Cardiovascular Electrophysiology·K E EllisonP L Friedman
Aug 29, 2001·Pacing and Clinical Electrophysiology : PACE·E Delacretaz, W G Stevenson
Aug 4, 2004·Circulation·Corinna B BrunckhorstWilliam G Stevenson

❮ Previous
Next ❯

Citations

Mar 14, 2012·Herzschrittmachertherapie & Elektrophysiologie·D BänschC A Nienaber
Oct 8, 2008·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Yoshihiro YamashinaTomoyuki Yambe
Jul 30, 2009·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Henry H HsiaFrancis E Marchlinski
Apr 20, 2012·Cardiovascular Research·Angel ArenalFrancisco Fernández-Avilés
May 16, 2009·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Etienne M AliotUNKNOWN Heart Rhythm Society
Aug 1, 2012·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·T Jared BunchDhanunjaya Lakkireddy
Sep 17, 2009·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Benhur Davi HenzAngelo Amato Vincenzo de Paola
Apr 22, 2014·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Angel ArenalFrancisco Fernández-Avilés
Feb 22, 2014·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Giuseppe MaccabelliPaolo Della Bella
Jul 8, 2010·Current Cardiology Reports·Melissa R Robinson, Mathew D Hutchinson
Sep 18, 2007·Expert Review of Cardiovascular Therapy·Eric J Kessler, Bradley P Knight
Mar 26, 2013·Journal of the American College of Cardiology·Haris M HaqqaniJonathan M Kalman
Feb 27, 2014·Indian Heart Journal·Olujimi A AjijolaKalyanam Shivkumar
Sep 24, 2013·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Corrado CarbucicchioClaudio Tondo
Jan 13, 2015·International Journal of Cardiology·Arian SultanDaniel Steven
May 15, 2013·Archivos de cardiología de México·Pasquale VergaraPaolo Della Bella
Mar 29, 2011·Heart Failure Clinics·Ganesh Venkataraman, S Adam Strickberger
Mar 29, 2011·Heart Failure Clinics·Peem LorvidhayaAlfred E Buxton
Aug 5, 2010·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Shiro NakaharaKalyanam Shivkumar
Aug 6, 2009·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Haris M Haqqani, Francis E Marchlinski
Apr 8, 2009·Current Problems in Cardiology·Jean-Marc RaymondWilliam G Stevenson
Jun 10, 2008·Cardiology Clinics·Ronald Lo, Henry H Hsia
Nov 17, 2015·Current Opinion in Cardiology·Samuel H BaldingerRoy M John
Mar 10, 2015·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Kivanc YalinKamil Adalet
Jul 4, 2009·Pacing and Clinical Electrophysiology : PACE·Claudio PratolaRoberto Ferrari
Jul 27, 2010·Journal of Cardiovascular Electrophysiology·Roderick TungKalyanam Shivkumar
Oct 21, 2014·Journal of Cardiovascular Electrophysiology·Frederic SacherPierre Jaïs
Feb 26, 2010·Pacing and Clinical Electrophysiology : PACE·Chunhua DingJeffrey Olgin
Jan 28, 2010·Journal of Cardiovascular Electrophysiology·T Jared BunchSrijoy Mahapatra
Jan 20, 2010·Journal of Cardiovascular Electrophysiology·Andrea NataleUNKNOWN Venice Chart members
May 2, 2006·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Etienne Delacrétaz
Sep 1, 2014·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Yasuaki TanakaEdward P Gerstenfeld
Feb 25, 2014·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Juan Fernández-ArmentaAntonio Berruezo
Oct 1, 2013·Journal of the American College of Cardiology·Pablo Avila, Angel Arenal
Oct 1, 2013·Journal of the American College of Cardiology·Stavros E Mountantonakis, Edward P Gerstenfeld
Feb 7, 2015·Pacing and Clinical Electrophysiology : PACE·Anees ThajudeenXunzhang Wang
Aug 26, 2015·Cardiac Electrophysiology Clinics·Juan Fernández-ArmentaAntonio Berruezo
Feb 5, 2010·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Oliver R SegalD Wyn Davies
Nov 5, 2016·European Journal of Nuclear Medicine and Molecular Imaging·Alessia GimelliMaria Grazia Bongiorni

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.

Cardiomyopathy

Cardiomyopathy is a disease of the heart muscle, that can lead to muscular or electrical dysfunction of the heart. It is often an irreversible disease that is associated with a poor prognosis. There are different causes and classifications of cardiomyopathies. Here are the latest discoveries pertaining to this disease.