9 research outputs found
CRT-609 Renal Denervation Using Standard 5F Radiofrequency Ablation Catheter in Patients with End Stage Renal Disease: A 6 Month Follow-Up
Radiofrequency catheter ablation of ventricular tachycardia in arrhythmogenic right ventricular dysplasia/cardiomyopathy using non-contact electroanatomical mapping: single-center experience with follow-up up to median of 30Â months
Cardioembolic stroke on unaffected side during thrombolysis for acute ischemic stroke
Cardiac thrombus is not an established contraindication to thrombolysis
with intravenous tissue plasminogen activator in acute ischemic stroke.
Recurrent ischemic stroke involving an initially unaffected arterial
territory during the course of thrombolysis in stroke has been
reported, but remains exceptionally rare. We present a case that
developed cardioembolic stroke on the previously unaffected side during
thrombolysis for acute ischemic stroke
Ablation of Ventricular Tachycardia in Patients with Ischemic Heart Disease Using Rotational Angiography (DynaCT) Guided Substrate Mapping Exclusively: Intermediate Term Results
Right Ventricular Outflow Tract Ventricular Ectopics: Yet Another Tachycardia with Involvement of Autonomic Plexus?
Demonstration of posterior fascicle to myocardial conduction block during ablation of idiopathic left ventricular tachycardia: An electrophysiological predictor of long-term success
Idiopathic left ventricular tachycardia (ILVT) is a common form of ventricular tachycardia (VT) in structurally normal heart. Different methods have been proposed for radiofrequency ablation (RFA) of ILVT that have good short-term results but recurrence is higher. Termination of tachycardia during RFA and/or noninduciblity has been the procedural end point.
To describe electrophysiological markers that add to long-term freedom from recurrences.
Fifteen patients with ILVT underwent RFA guided by 3-dimensional electroanatomical mapping. After creating a 3-dimensional geometry of the left ventricle (LV), the conduction system of the LV was mapped by tracing from His recording from the left ventricular outflow tract and distally till the fascicles and perifascicular myocardium. VT was induced by using programmed electrical stimulation. Ablation was done targeting the distal posterior fascicle and extended linearly to the surrounding myocardium till conduction block was achieved between the fascicle-Purkinje network and the left ventricular myocardium.
All patients (13 men; mean age 32±9 years) had inducible VTs. The mean tachycardia cycle length was 320±28 ms. Radiofrequency energy was given to the distal posterior fascicle and the myocardium, with an aim to achieve a myocardial-fascicular conduction block in addition to the termination of VT and noninducibility. Ablation was successful in all. No recurrence of tachycardia was seen in any patient on follow-up (20.8±8.5 months).
Distal posterior fascicle and Purkinje-myocardial junction is an effective target site for ILVT ablation. The demonstration of myocardial to fascicle conduction block serves as an important electrophysiological marker of successful ablation and improved long-term success