The Experts below are selected from a list of 9 Experts worldwide ranked by ideXlab platform
Zuxiang Fang - One of the best experts on this subject based on the ideXlab platform.
-
the application of multilevel b splines in 3d emulation of dynamic Epicardium Mapping
Chinese journal of medical instrumentation, 2005Co-Authors: Cuiwei Yang, Zuxiang FangAbstract:: This paper presents an algorithm for data interpolation and approximation used in the whole atria Mapping. Multilevel B-splines are introduced to compute the whole atria surface through a set of irregularly spaced points and to draw the 3D isopotential map, which can reflect the conduction process of depolarization in complex arrhythmia such as atrial fibrillation.
Cuiwei Yang - One of the best experts on this subject based on the ideXlab platform.
-
the application of multilevel b splines in 3d emulation of dynamic Epicardium Mapping
Chinese journal of medical instrumentation, 2005Co-Authors: Cuiwei Yang, Zuxiang FangAbstract:: This paper presents an algorithm for data interpolation and approximation used in the whole atria Mapping. Multilevel B-splines are introduced to compute the whole atria surface through a set of irregularly spaced points and to draw the 3D isopotential map, which can reflect the conduction process of depolarization in complex arrhythmia such as atrial fibrillation.
Serkan Topaloglu - One of the best experts on this subject based on the ideXlab platform.
-
Endo/epicardial ablation of ventricular arrhythmias with contact force-sensing catheters in arrhythmogenic right ventricular dysplasia/cardiomyopathy.
Anatolian Journal of Cardiology, 2019Co-Authors: Dursun Aras, Firat Ozcan, Ozcan Ozeke, Meryem Kara, Serkan TopalogluAbstract:OBJECTIVE: To control ventricular arrhythmia in arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C), ablation may be required both from the endocardial and epicardial side. In this study, we analyzed the results of contact force-sensing (CFS) catheters in the endo/epicardial ablation of ventricular arrhythmias in ARVD/C. METHODS: We included 17 patients with ARVD/C, 5 of whom had premature ventricular contractions (PVC), and the rest of them were admitted with a ventricular tachycardia (VT) storm, between September 2014 and October 2016. We divided patients into two groups: the PVC and VT groups. Irrigated CFS catheters (Smart Touch, Biosense Webster, Inc.) were utilized in all procedures. RESULTS: In the PVC group, the mean ratio of PVC during the 24-hour Holter monitoring was 31.8+-7.6%. The mean contact force during Mapping and ablation in the right ventricle was 13+-1.2 and 12.8+-1.9 grams, respectively. The mean follow-up duration was 15+-3.1 months for the PVC group. The left ventricular ejection fraction improved in all patients (52.8+-10%). All patients in the VT group underwent endo/epicardial ablation, except one. The mean contact force during the endocardium and Epicardium Mapping was 12.5+-1.2 and 12.5+-4.6 grams, respectively. The mean contact force during ablation for the endocardium and Epicardium was 12.1+-1.4 and 12.8+-1.9 grams, respectively. All clinical and non-clinical VTs were ablated successfully, except in 2 patients who still had non-clinical VTs. The mean follow-up was 15.5+-4.5 months. None of the VT patients experienced electrical storm or death. Two patients had single shock, and 1 patient had two shocks during the follow-up. CONCLUSION: Endo/epicardial ablation of ventricular arrhythmias with CFS catheters in ARVD/C seems to be promising.
Dursun Aras - One of the best experts on this subject based on the ideXlab platform.
-
Endo/epicardial ablation of ventricular arrhythmias with contact force-sensing catheters in arrhythmogenic right ventricular dysplasia/cardiomyopathy.
Anatolian Journal of Cardiology, 2019Co-Authors: Dursun Aras, Firat Ozcan, Ozcan Ozeke, Meryem Kara, Serkan TopalogluAbstract:OBJECTIVE: To control ventricular arrhythmia in arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C), ablation may be required both from the endocardial and epicardial side. In this study, we analyzed the results of contact force-sensing (CFS) catheters in the endo/epicardial ablation of ventricular arrhythmias in ARVD/C. METHODS: We included 17 patients with ARVD/C, 5 of whom had premature ventricular contractions (PVC), and the rest of them were admitted with a ventricular tachycardia (VT) storm, between September 2014 and October 2016. We divided patients into two groups: the PVC and VT groups. Irrigated CFS catheters (Smart Touch, Biosense Webster, Inc.) were utilized in all procedures. RESULTS: In the PVC group, the mean ratio of PVC during the 24-hour Holter monitoring was 31.8+-7.6%. The mean contact force during Mapping and ablation in the right ventricle was 13+-1.2 and 12.8+-1.9 grams, respectively. The mean follow-up duration was 15+-3.1 months for the PVC group. The left ventricular ejection fraction improved in all patients (52.8+-10%). All patients in the VT group underwent endo/epicardial ablation, except one. The mean contact force during the endocardium and Epicardium Mapping was 12.5+-1.2 and 12.5+-4.6 grams, respectively. The mean contact force during ablation for the endocardium and Epicardium was 12.1+-1.4 and 12.8+-1.9 grams, respectively. All clinical and non-clinical VTs were ablated successfully, except in 2 patients who still had non-clinical VTs. The mean follow-up was 15.5+-4.5 months. None of the VT patients experienced electrical storm or death. Two patients had single shock, and 1 patient had two shocks during the follow-up. CONCLUSION: Endo/epicardial ablation of ventricular arrhythmias with CFS catheters in ARVD/C seems to be promising.
Krit Jongnarangsin - One of the best experts on this subject based on the ideXlab platform.
-
Delayed-enhanced magnetic resonance imaging in nonischemic cardiomyopathy: utility for identifying the ventricular arrhythmia substrate.
Journal of the American College of Cardiology, 2009Co-Authors: Frank Bogun, Benoit Desjardins, Eric Good, Sanjaya Gupta, Thomas Crawford, Hakan Oral, Matthew Ebinger, Frank Pelosi, Aman Chugh, Krit JongnarangsinAbstract:Objectives The purpose of this study was to assess the value of delayed-enhanced magnetic resonance imaging (DE-MRI) to guide ablation of ventricular arrhythmias in patients with nonischemic cardiomyopathy (NIC). Background In patients with NIC, ventricular arrhythmias often are associated with scar tissue. DE-MRI can be used to precisely define scar tissue. Methods DE-MRI was performed in 29 consecutive patients (mean age 50 ± 15 years) with NIC (mean ejection fraction 37 ± 9%) referred for catheter ablation of ventricular tachycardia (VT) or premature ventricular complexes (PVCs). Scar was extracted from DE-MRIs and was then integrated into the electroanatomic map. Mapping data were correlated with respect to the localization of scar tissue. Results Scar was identified by DE-MRI in 14 of 29 patients. Nine of these patients had VT and 5 had PVCs. In 5 of the patients there was predominantly endocardial scar, and Mapping and ablation of arrhythmias was effectively performed from the endocardium in all 5 patients. In 2 patients scar was either intramural or epicardial with extension to the endocardium. In both patients with partial endocardial scar extension, the ablation was effective in eliminating some but not all arrhythmias. In 2 patients most of the scar tissue was confined to the Epicardium; Mapping identified and eliminated an epicardial origin in both patients. No effect on arrhythmias could be achieved in the other 5 patients with predominantly intramural scar. Conclusions DE-MRI in patients without prior infarctions can help to identify the arrhythmogenic substrate; furthermore, it helps to plan an appropriate Mapping and ablation strategy.