Tıp Fakültesi / Faculty of Medicine

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    Radiofrequency catheter ablation of left-sided accessory pathways via retrograde aortic approach in children
    (2016) Ayabakan, Canan; Sahin, Murat; Celiker, Alpay; 27354861
    Background: We aimed to analyze the results of retrograde aortic radiofrequency catheter ablation of left-sided accessory pathways in children. Methods: Between January 2010 and September 2014, 25 children who underwent left-sided accessory pathway ablation with a retrograde aortic approach were evaluated retrospectively. Results: The mean age of the patients was 11.09 +/- 3.71 years. Seventeen patients were male (68%). The mean procedure and fluoroscopy times were 71.54 +/- 21.05 min and 31.42 +/- 19.57 min, respectively. Radiofrequency energy was delivered with 41.38 +/- 15.32 W at 52.38 +/- 5.45 degrees C. Sixteen patients (64%) presented with manifest preexcitation and, 9 had concealed accessory pathways. The location of accessory pathway was left lateral in 16 patients, posteroseptal in 5, left anterolateral in 2, and left posterolateral and left posterior in the remaining 2. The acute success rate was 96%. The patients were followed for a mean of 16.68 +/- 18.01 months. There were 2 recurrences. No major complications were observed in the periprocedural period. One patient had groin hematoma, another one had transient severe headache and vomiting. Trivial mitral regurgitation was noted in a patient, which remained the same throughout follow-up. None of the patients developed new aortic regurgitation, pericardial effusion, or thrombi at the site of ablation. Conclusions: The retrograde aortic approach can be safely employed with a high success rate for ablation of left-sided accessory pathways in children. (C) 2016 Japanese Heart Rhythm Society. Published by Elsevier B.V.
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    Results of radiofrequency ablation treatment in primary and metastatic liver cancer
    (2017) Aytekin, Cuneyt; Yuksel, Yavuz
    Objective: The aim of this present study was to retrospectively evaluate the local therapeutic efficiency of radiofrequency ablation (RFA) treatment in patients with primary and metastatic liver cancer. Material and Methods: A total of 35 patients who had undergone RFA in our clinic were included in the study and evaluated retrospectively. Patients were grouped according to their ages, lesion's primary or metastatic formation, number of lesions and lesion sizes. Local tumor growth, new lesion formation and general survival factors were evaluated statistically. Results: During the follow-up after RFA treatment, the residual tumor was determined in the treatment area in only one (1.9%) lesion. Total ablation was achieved in 50 lesions (98.0%). Local tumor growth occured in 9 lesions of eight patients (17.6%). During follow-up, development of a new lesion at a different liver region was seen in 22 (62.8%) patients. Following RFA, one patient had cholecystitis while intraperitoneal minimal hemorrhage was encountered in two patients. Conclusion: As RFA treatment protects intact liver tissues, directly targets the tumor, and the mortality and morbidity rates are lower when compared to other treatments, it is currently considered safe for the treatment of liver tumors.