|
| HOME | SUBSCRIPTIONS | CURRENT ISSUE | PAST ISSUES | CARDIOSOURCE | SEARCH | HELP | FEEDBACK |
|
|
|
|||||||||
|
|||||||||||
|
J Am Coll Cardiol, 2000; 35:414-421 © 2000 by the American College of Cardiology Foundation |
a Division of Cardiology, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
Manuscript received February 2, 1999; revised manuscript received September 20, 1999, accepted October 27, 1999.
Reprint requests and correspondence: Dr. S. Adam Strickberger, University of Michigan Medical Center, 1500 East Medical Center Dr., Box 0022, Ann Arbor, Michigan 48109-0022
This work was supported, in part, by a research grant from Endocardial Solutions, Inc. Fred Morady is a member of the Scientific Advisory Board of Endocardial Solutions, Inc.
OBJECTIVES
The purpose of this study was to describe a computerized mapping system that utilizes a noncontact, 64 electrode balloon catheter to compute virtual electrograms simultaneously at 3,360 left ventricular (LV) sites and to assess the clinical utility of this system for mapping and ablating ventricular tachycardia (VT).
BACKGROUND
Mapping VT in the electrophysiology laboratory conventionally is achieved by sequentially positioning an electrode catheter at multiple endocardial sites.
METHODS
Fifteen patients with VT underwent 18 electrophysiology procedures using the noncontact, computerized mapping system. A 9F 64 electrode balloon catheter and a conventional 7F electrode catheter for mapping and ablation were positioned in the LV using a retrograde aortic approach. Using a boundary element inverse solution, 3,360 virtual endocardial electrograms were computed and used to derive isopotential maps. An incorporated locator system was used in conjunction with or instead of fluoroscopy to position the conventional electrode catheter.
RESULTS
A total of 21 VTs, 12 of which were hemodynamically-tolerated and 9 of which were not, were mapped. Isolated diastolic potentials, presystolic areas, zones of slow conduction and exit sites during VT were identified using virtual electrograms and isopotential maps. Among 19 targeted VTs, radiofrequency ablation guided by the computerized mapping system and the locator signal was successful in 15.
CONCLUSIONS
The computerized mapping system described in this study computes accurate isopotential maps that are a useful guide for ablation of hemodynamically stable or unstable VT.
| ||||||||
This article has been cited by other articles:
|
|
 |
|
  H. U. Klemm, R. Ventura, D. Steven, C. Johnsen, T. Rostock, B. Lutomsky, T. Risius, T. Meinertz, and S. Willems Catheter Ablation of Multiple Ventricular Tachycardias After Myocardial Infarction Guided by Combined Contact and Noncontact Mapping Circulation, May 29, 2007; 115(21): 2697 - 2704. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. H. Everett IV, E. E. Wilson, S. Foreman, and J. E. Olgin Mechanisms of Ventricular Fibrillation in Canine Models of Congestive Heart Failure and Ischemia Assessed by In Vivo Noncontact Mapping Circulation, September 13, 2005; 112(11): 1532 - 1541. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Thiagalingam, E. M. Wallace, C. R. Campbell, A. C. Boyd, V. E. Eipper, K. Byth, D. L. Ross, and P. Kovoor Value of Noncontact Mapping for Identifying Left Ventricular Scar in an Ovine Model Circulation, November 16, 2004; 110(20): 3175 - 3180. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. Della Bella, S. Riva, G. Fassini, F. Giraldi, M. Berti, C. Klersy, and N. Trevisi Incidence and significance of pleomorphism in patients with postmyocardial infarction ventricular tachycardia: Acute and long-term outcome of radiofrequency catheter ablation Eur. Heart J., July 1, 2004; 25(13): 1127 - 1138. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. M Morgan PATIENTS WITH VENTRICULAR ARRHYTHMIAS: WHO SHOULD BE REFERRED TO AN ELECTROPHYSIOLOGIST? Heart, December 1, 2002; 88(5): 544 - 550. [Full Text] [PDF]
|
|
|
|
|
|
H. Kottkamp and G. Hindricks Catheter ablation of untolerated ventricular tachycardia--a new front line Eur. Heart J., May 1, 2002; 23(9): 697 - 699. [Full Text] [PDF]
|
|
|
|
|
|
P. Della Bella, A. Pappalardo, S. Riva, C. Tondo, G. Fassini, and N. Trevisi Non-contact mapping to guide catheter ablation of untolerated ventricular tachycardia Eur. Heart J., May 1, 2002; 23(9): 742 - 752. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R.J. Schilling Can catheter ablation cure post-infarction ventricular tachycardia? Eur. Heart J., March 1, 2002; 23(5): 352 - 354. [Full Text] [PDF]
|
|
|
|
 |
|
 M. Gasparini, M. Mantica, F. Coltorti, P. Galimberti, and C. Ceriotti The use of advanced mapping systems to guide right linear lesions in paroxysmal atrial fibrillation Eur. Heart J. Suppl., November 1, 2001; 3(suppl_P): P41 - P46. [Abstract] [PDF]
|
|
|
|
|
|
T. Paul, B. Windhagen-Mahnert, T. Kriebel, H. Bertram, R. Kaulitz, T. Korte, M. Niehaus, and J. Tebbenjohanns Atrial Reentrant Tachycardia After Surgery for Congenital Heart Disease : Endocardial Mapping and Radiofrequency Catheter Ablation Using a Novel, Noncontact Mapping System Circulation, May 8, 2001; 103(18): 2266 - 2271. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. G Stevenson and E. Delacretaz ELECTROPHYSIOLOGY: Radiofrequency catheter ablation of ventricular tachycardia Heart, November 1, 2000; 84(5): 553 - 559. [Full Text]
|
|
| HOME | SUBSCRIPTIONS | CURRENT ISSUE | PAST ISSUES | CARDIOSOURCE | SEARCH | HELP | FEEDBACK |
