![]() The remaining patients, in whom RFCA was found to be effective at Holter ECG monitoring performed just after the procedure, continue to be free from arrhythmia and do not require antiarrhythmic agents. During Holter ECG monitoring performed one and three months after RFCA, a recurrence of frequent ventricular ectopy (7139 beats / 24 hours) was found in one patient, however, without complex arrhythmias. The mean follow-up duration was 15.6 months (range 5-26 months). In none of the patients neither early nor late complications were observed. In the remaining four patients no significant reduction in the frequency of ventricular ectopy was noted, however, no complex ventricular arrhythmias were present. Results: Holter ECG monitoring performed after RFCA showed that the procedure was effective in 30 (88.2%) patients. Effective RFCA was defined as the reduction of ventricular ectopy <1000 / 24 hours in Holter monitoring performed just after the procedure. In order to assess short- and long-term RFCA efficacy, a 24-hour Holter ECG monitoring was performed before RFCA and shortly after the procedure as well as one and three months afterwards. The power of RF current was set at 40 Watts, duration - 90 seconds, and maximal temperature - 55o C. RFCA was performed with the use of the CARTO system. Methods: The study group consisted of 34 consecutive patients (mean age 38.8☑2.0 years, range 21-52 years, 11 males, 23 females) with symptomatic arrhythmias originating from RVOT, who underwent RFCA in our department between December 2001 to July 2003. Aim: To assess early and late outcome in patients with RVOT arrhythmias treated with RFCA combined with electro-anatomical mapping system (CARTO). Pharmacological treatment is effective in no more than 50% of patients, whereas radio-frequency catheter ablation (RFCA) offers a much higher success rate. For the significant changes of heart anatomy the traditional electro-physiological systems are not effective for mapping of the arrhythmias, where 3D electro-anatomical navigation system allows, against the background of the anatomy changed at any extent, most accurate mapping of the arrhythmia substrate and its effective ablation.Background: Ventricular ectopy or ventricular tachycardia (VT) originating from the right ventricular outflow tract (RVOT) are the most common forms of arrhythmias in patients with structurally normal heart. ![]() Arrhythmias developed against the background of congenital cardiac pathologies.Unstable, or hemodynamically unstable arrhythmias, which could not be mapped by means of traditional systems.Application of 3D electro-anatomical navigation systems will significantly increase effectiveness of ablation of these arrhythmias and decrease the time of procedure. Complex arrhythmias emerged after post-surgery scar or myocardium infarction, mapping of which through traditional electro-physiological systems is very difficult. Complex atrium and ventricle arrhythmias. ![]() Fibrillation of the atriums is the primary problem in today's arrhythmology and its radical treatment is possible by means of 3D navigation system only. ny of them, though it is especially necessary and useful for ablation of the following arrhythmias: Based on the above, as well as on the opinion of the world recognized experts, CARTO system is ideal for successful resolution of the arrhythmia management issue in Georgia at full extent. CARTO system allows providing of the most accurate mapping of any arrhythmia, accurately define not only anatomy of the heart ventricles but also produce the arrhythmia activation map, what, unlike the other systems, clearly presents the substrate of arrhythmia and specifies the relevant critical points, through ablation of which one or the another arrhythmia is fully cured.
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