January 1, 2003Pacing and Clinical Electrophysiology
Catheter Ablation of Ventricular Tachycardia Following Myocardial Infarction Using Three‐Dimensional Electroanatomical Mapping
Why the study?
Does three-dimensional electroanatomical mapping-guided radiofrequency catheter ablation safely and effectively eliminate ventricular tachycardia in men with postinfarction VT?
Population
28 men with postinfarction ventricular tachycardia, mean age 63.8 +/- 10.6 years, mean left ventricular…
Design
Case_series
Follow-up
mean 10.6 +/- 6.4 months
Authors
Discussion
Loading...
Member takes
Implication
Supports 3D mapping-guided ablation feasibility in postinfarction VT; leaves open efficacy confirmation in prospective trials.
Key Points
- To assess the clinical efficacy and safety of three-dimensional electroanatomical mapping in guiding radiofrequency catheter ablation for postinfarction ventricular tachycardia.
- Studied 28 men (mean age 63.8 ± 10.6 years, mean left ventricular ejection fraction 28% ± 9%) with postinfarction ventricular tachycardia.
- Performed 3D left ventricular voltage mapping during sinus rhythm to detect fractionated potentials, slow conduction zones, and dense scar, followed by radiofrequency ablation during sinus rhythm or stable tachycardia.
- Clinical ventricular tachycardia was rendered noninducible in 24/28 (85.7%) patients, and all monomorphic ventricular tachycardias were eliminated in 16/28 (57.1%) patients.
- Mean procedural time was 258 ± 82 minutes with a mean fluoroscopic exposure time of 13.5 ± 8.8 minutes.
- During a mean follow-up of 10.6 ± 6.4 months, 6 patients underwent repeat ablation for recurrence, and one patient experienced a transient cerebral ischemic attack with no other major complications.
Structured PICO
Does three-dimensional electroanatomical mapping-guided radiofrequency catheter ablation safely and effectively eliminate ventricular tachycardia in men with postinfarction VT?
P
Population
28 men with postinfarction ventricular tachycardia (VT), mean age 63.8 +/- 10.6 years, mean left ventricular ejection fraction 28% +/- 9%.
I
Intervention
Radiofrequency (RF) catheter ablation of VT guided by three-dimensional electroanatomical mapping, used in parallel with a multichannel recording system.
O
Outcome
Clinical usefulness (noninducibility of clinical VT and elimination of monomorphic VT) and safety
Three-dimensional electroanatomical mapping safely and effectively guides catheter ablation of postinfarction ventricular tachycardia, achieving high rates of noninducibility.
Cite This Study
Kautzner et al. (2003) studied this question.