Browsing by Author "AKÇA, TUĞBERK"

Now showing 1 - 4 of 4

A novel technique of pulmonary artery banding by means of radiofrequency ablation: An experimental study in rabbits
(Bayçınar Tıbbi Yayıncılık, 2022-07-01) Uysal, Fahrettin; Akça, Tuğberk; Genç, Abdüsselam; Küpeli, Zehra Avcı; Özfırat, Erencan; Canatan, Uygur; Uysal, Berfin; Sığnak, Işık Şenkaya; UYSAL, FAHRETTİN; AKÇA, TUĞBERK; GENÇ, ABDÜSSELAM; KÜPELİ, ZEHRA AVCI; ÖZFIRAT, ERENCAN; CANATAN, UYGUR; ŞENKAYA SIĞNAK, IŞIK; 0000-0002-2747-974X; AAH-4421-2021; AEX-4557-2022; CQK-7120-2022; FHA-3247-2022; JHY-2022-2023; CJU-7194-2022; GPN-0680-2022
Background: The aim of this study was to evaluate the efficacy and feasibility of a novel method of narrowing pulmonary arteries with catheter angiography using radiofrequency energy in rabbits. Methods: A total of nine New Zealand white rabbits weighing 3.0 to 4.2 kg each were utilized in this experimental study. After the location of pulmonary artery was confirmed by echocardiography and angiography, radiofrequency energy was applied by starting with 5 W energy for the first time and increasing by 5 W, if there was no rupture to a maximum of 20 W. Multiple applications of radiofrequency energy with different durations were performed at different levels of the pulmonary artery. Eight weeks later, surviving rabbits were sacrificed. The pulmonary arteries were removed for histological investigation. Results: Five rabbits remained alive after the experiment. There was a significant correlation between radiofrequency power and the degree of vessel thickness change in the pulmonary artery. The endothelial integrity of the tunica intima was impaired in all groups and the diameter of vessel was thickened by an average of 3.5 times. Conclusion: The narrowing of the pulmonary artery using radiofrequency energy was successfully performed in a small sample size of experimental animals in this study.
Long-term results of splenectomy in transfusion-dependent thalassemia
(Lippincott Williams & Wilkins, 2023-04-01) Özdemir, Gül N.; Ayçiçek, Ali; Akça, Tuğberk; AKÇA, TUĞBERK; Özkaya, Güven; ÖZKAYA, GÜVEN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı.; 0000-0002-3204-4353; 0000-0003-0297-846X; ABI-3846-2020; AAO-9962-2020; A-4421-2016; AEX-4557-2022
Splenectomy is indicated in transfusion-dependent thalassemia (TDT) only in certain situations. This study aimed to present the effectiveness, complications, and long-term follow-up results of splenectomy in children with TDT. We performed a 30-year single-institution analysis of cases of splenectomy for TDT between 1987 and 2017 and their follow-up until 2021. A total of 39 children (female/male: 24/15) were included. The mean age at splenectomy was 11.2 +/- 3.2 years, and their mean follow-up duration after splenectomy was 21.5 +/- 6.4 years. Response was defined according to the patient's annual transfusion requirement in the first year postsplenectomy and on the last follow-up year. Complete response was not seen in any of the cases; partial response was observed in 32.3% and no response in 67.6%. Thrombocytosis was seen in 87% of the patients. The platelet counts of 7 (17.9%) patients were >1000 (10(9)/L), and aspirin prophylaxis was given to 22 (56.4%) patients. Complications were thrombosis in 2 (5.1%) patients, infections in 11 (28.2%) patients, and pulmonary hypertension in 4 (10.2%) patients. Our study showed that after splenectomy, the need for transfusion only partially decreased in a small number of TDT patients. We think splenectomy can be delayed with appropriate chelation therapy up to higher annual transfusion requirement values.
The prevalence of post-COVID-19 hypertension in children
(Sage Publications Inc, 2022-04-24) Uysal, Berfin; Akça, Tuğberk; Akaci, Okan; Uysal, Fahrettin; AKÇA, TUĞBERK; UYSAL, FAHRETTİN; Uludağ Üniversitesi / Tıp Fakültesi / Çocuk Sağlığı ve Hastalıkları Anabilim Dalı / Pediartrik Kardiyoloji Bilim Dalı; 0000-0002-2747-974X; AAH-4421-2021; AEX-4557-2022
Coronavirus disease 2019 (COVID-19) is the greatest pandemic in a century. In this study, children with mild COVID-19 infections were evaluated at least 8 weeks after the polymerase chain reaction (PCR) test positivity, and the frequency of hypertension (HT) in these children was investigated. These results were compared to those of the control group, which consisted of 32 healthy children in the same age range as the trial group but who did not have COVID-19. This prospective multicenter study was conducted including children aged 10 to 18 years. There were 16 patients (16%) who had elevated systolic blood pressure, while 11 patients (11%) had stage-1 HT and 1 patient (1%) had stage-2 HT. It was revealed that children with COVID-19 had significantly higher systolic and diastolic blood pressures than normal healthy children. The findings of this study contribute toward increasing the understanding of the sequelae of mild COVID-19 in pediatric patients.
The role of external loop recorders in arrhythmia-related symptoms in children: A single center experience
(Springer, 2021-08-13) Akça, Tuğberk; Uysal, Fahrettin; Bostan, Özlem Mehtap; Genç, Abdusselam; Türkmen, Hasan; AKÇA, TUĞBERK; UYSAL, FAHRETTİN; BOSTAN, ÖZLEM MEHTAP; GENÇ, ABDÜSSELAM; TÜRKMEN, HASAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Kardiyoloji Bölümü; 0000-0001-7707-2174; 0000-0002-2747-974X; AEX-4557-2022; AAH-4421-2021; AAG-8558-2021; CQK-7120-2022; JKC-8556-2023
In this study, we report our experience with the use of external loop recorders (ELRs), in terms of diagnostic efficiency according to symptoms and symptom-rhythm correlation in pediatric patients. We evaluated ELRs applied to 178 patients between April 2017 and November 2020 at our center. The mean age of 172 patients included in the study was 13.6 +/- 3.8 years, and 69.8% were female. ELR indications were palpitations in 98 (56.9%) cases, chest pain and palpitations in 43 (25%) cases, presyncope/syncope in 28 (16.2%) cases, and pacemaker/ implantable cardioverter-defibrillator (ICD) problems in 3 (0.2%) cases. ELR recording times were 14.2 +/- 9.7 days on average, ranging from 2 to 67 days. While the symptom-rhythm correlation was 29.1% in total, when the indications were evaluated one by one, this correlation was found to be 30.2% in palpitations, 34.7% in chest pain and palpitations, and 10.7% in presyncope/syncope. The total diagnostic efficiency was 68.1%. In the follow-up of ELR cases, a total of 139 (80.8%) patients received clinical follow-up without medication, 15 (8.8%) patients received medical treatment, and 18 (10.4%) patients underwent EPS. The cardiac ELR system is useful in detecting underlying arrhythmias. Demonstrating sinus tachycardia at the time of the symptom may be seen as negative finding, but while experiencing symptoms, it is diagnostically valuable and may help avoid further investigation with costly and invasive diagnostic procedures. For diagnostic efficiency and cost effectiveness, the optimal recording time is 2 weeks, but it should be extended to 4 weeks in cases such as of presyncope/syncope that cannot be explained with a 2-week ELR use.