Fakülteler / Faculties
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Item Evaluation of Safety and Efficacy of Liver Biopsy Following Liver Transplant(2015) Kirnap, Mahir; Akdur, Aydincan; Reyhan, Nihan Haberal; Aytekin, Cuneyt; Harman, Ali; Yildirim, Sedat; Moray, Gokhan; Haberal, Mehmet; 0000-0003-2498-7287; 0000-0001-9852-9911; 0000-0002-3462-7632; 0000-0002-5735-4315; 0000-0002-8726-3369; 0000-0002-7386-7110; 0000-0001-5134-168X; 25894180; AAE-1041-2021; AAK-4587-2021; AAJ-8097-2021; AAF-4610-2019; AAH-9198-2019; AAA-3068-2021; K-9824-2013Objectives: Liver biopsy is a diagnostic tool for liver pathology after liver transplant. However, biopsy can cause life-threating complications. There is limited knowledge about efficacy and complications of liver biopsy after liver transplant. Our aim was to evaluate the risk and benefit of liver biopsy after liver transplant and quality of biopsy specimens. Materials and Methods: We retrospectively analyzed all liver biopsies performed after liver transplant between January 2000 and October 2014. All patients were monitored for minimum 24 hours after biopsy. Results: We performed 245 liver biopsies in 159 liver transplant patients. Fifteen biopsies (6%) were nondiagnostic. In the samples, there were 102 cases (41%) of acute rejection, 79 cases (35%) of cholangitis, and 49 cases (20%) of cholestasis observed. Complications after biopsy were seen in 23 patients (9%) and biopsies. There were 7 patients who had severe abdominal pain followed by fever. We diagnosed 4 patients who had intercostal/subcapsular bleeding and 12 patients who had vasovagal reaction. All patients were treated with analgesic agents and monitored for 24 hours. No blood transfusion or surgery was required. Conclusions: Liver biopsy after liver transplant is an invasive diagnostic tool for liver pathology. However, it can be used safely in experienced centers.Item Ultrasound-Guided Brachiocephalic Vein Catheterization in Infants Weighing Less than Five Kilograms(2015) Aytekin, Cuneyt; Ozyer, Umut; Harman, Ali; Boyvat, Fatih; 0000-0002-4300-009X; 0000-0002-7386-7110; 0000-0001-5134-168X; 26044899; F-4230-2011; AAK-9071-2021; K-9824-2013Purpose: To describe our experience with the use of ultrasound-guided supraclavicular brachiocephalic vein approach for central vein catheterization in infants weighing less than 5 kg. Methods: A retrospective review was performed for infants who underwent ultrasound-guided central vein catheterization from January 2012 to November 2014. Infants weighing less than 5 kg with supraclavicular brachiocephalic vein access were included in the study. Indications for central venous access, venous access side, catheter type and complications were evaluated. Results: Thirty-four catheterizations in 34 infants weighing from 1.5 to 4.9 kg (median 3.48 kg) were included in the study (aged 11 days to 7 months and 10 days, weight range 1.5 to 4.9 kg). Technical success rate was 97% (33 of 34 infants). No technical or clinical major complications were observed. Conclusions: Ultrasound-guided supraclavicular brachiocephalic vein access is a favorable alternative for central venous catheterization in low-weight infants with regard to high technical success rate and absence of major complications.Item Anatomic Variations of The Celiac Trunk and Hepatic Arterial System with Digital Subtraction Angiography(2014) Zagyapan, Ragiba; Kurkcuoglu, Ayla; Bayraktar, Ahmet; Pelin, Can; Aytekin, Cuneyt; https://orcid.org/0000-0003-0901-8883; https://orcid.org/0000-0001-5134-168X; 25910286; AEJ-3035-2022Background/Aims: Anatomical variation of the abdominal arteries is important. Historic and modern anatomists, radiologists, as well as surgeons have reported and accumulated anatomical variations with a morphological and clinical interest. During graft procurement and reconstruction, accidental injury of the hepatic artery is more likely in the presence of hepatic arterial variation, which can be a common clinical entity. During cadaveric dissection and diagnostic radiological imaging, various types of vascular anomalies are frequently found in human abdominal viscera, especially the celiac trunk. The aim of the present study is to determine anatomical variations in the celiac trunk and hepatic arterial system. Materials and Methods: Digital subtraction angiography data were collected from 152 consecutive donor patients (103 males and 49 females, aged between 6 and 77 years) who underwent orthotopic liver transplantation. Results: We examined the anatomy of the celiac trunk in a total of 152 consecutive patients. In total, 62.5% (95/152) of patients showed the classical trifurcation of the celiac trunk. Variant right hepatic arteries arising from the superior mesenteric artery were observed in 17.8% (27/152), the hepatic arteries arising from the left gastric artery were found in 13.1% (20/152), and common hepatic arteries arising from the superior mesenteric artery were observed in 6.6% (10/152) of patients. Conclusion: These data are useful for planning and performing surgical and radiological procedures of the upper abdomen.Item Successful Percutaneous Management of Recurrent Sclerosing Cholangitis After Liver Transplantation with Multiple Intrahepatic Plastic Biliary Stent Placement with Only One Access(2016) Boyvat, Fatih; Aytekin, Cuneyt; Akdur, Aydincan; Moray, Gokhan; Haberal, Mehmet; https://orcid.org/0000-0002-8726-3369; https://orcid.org/0000-0003-2498-7287; https://orcid.org/0000-0002-3462-7632; F-4230-2011; AAA-3068-2021; AAE-1041-2021; AAJ-8097-2021Item Simultaneous Percutaneous Large Profile Multiple Plastic Stents for Biliary Anastomotic Strictures After Liver Transplantation(2016) Boyvat, Fatih; Harman, Ali; Akdur, Aydincan; Aytekin, Cuneyt; Kirnap, Mahir; Moray, Gokhan; Haberal, Mehmet; https://orcid.org/0000-0002-7386-7110; https://orcid.org/0000-0002-8726-3369; https://orcid.org/0000-0003-2498-7287; https://orcid.org/0000-0002-3462-7632; F-4230-2011; K-9824-2013; AAA-3068-2021; AAH-9198-2019; AAE-1041-2021; AAJ-8097-2021Item Percutaneous Transhepatic Tips for Budd-Chiari Syndrome: Direct Simultaneous Puncture of Portal Vein and Inferior Vena Cava(2018) Boyvat, Fatih; Harman, Ali; Soy, Ebru H. Ayvazoglu; Aytekin, Cuneyt; Moray, Gokhan; Boyacioglu, Sedat; Haberal, Mehmet; 0000-0002-7386-7110; 0000-0002-0993-9917; 0000-0003-2498-7287; 0000-0002-9370-1126; 0000-0002-3462-7632; F-4230-2011; K-9824-2013; AAC-5566-2019; AAE-1041-2021; AAE-7637-2021; AAJ-8097-2021Item Endovascular Management of Arterial Complications Following Renal Transplant Biopsy(2018) Ozyer, Umut; Harman, Ali; Soy, Ebru H. Ayvazoglu; Aytekin, Cuneyt; Boyvat, Fatih; Haberal, Mehmet; 0000-0002-4300-009X; 0000-0002-7386-7110; 0000-0002-0993-9917; 0000-0002-3462-7632; AAK-9071-2021; K-9824-2013; AAC-5566-2019; F-4230-2011; AAJ-8097-2021Item Fluoroscopically Guided Retrograde Double-J Stent Removal in Renal Transplant Patients(2018) Aytekin, Cuneyt; Harman, Ali; Ozyer, Umut; Akdur, Aydincan; Boyvat, Fatih; Haberal, Mehmet; 0000-0002-7386-7110; 0000-0002-4300-009X; 0000-0002-8726-3369; 0000-0002-3462-7632; K-9824-2013; AAK-9071-2021; AAA-3068-2021; F-4230-2011; AAJ-8097-2021Item Successful Treatment of a Rare Complication in a Heart Transplant Recipient: Spontaneous Axillary Artery Bleeding(2019) Karacaglar, Emir; Akgun, Arzu Neslihan; Aytekin, Cuneyt; Aydinalp, Alp; Sezgin, Atilla; Muderrisoglu, I.Haldun; 30373508Spontaneous atraumatic axillary artery bleeding is an unusual clinical entity. Axillary artery bleeding is associated with a high mortality rate. Vascular fragility is defined as a decrease in blood vessel resistance, and increased vascular fragility is one of the reasons for arterial bleeding. In this report, we present a case of spontaneous axillary artery bleeding in a heart transplant recipient.Item The Efficacy of Flow Diverter Stents in the Treatment of Wide-Necked Intracranial Aneurysms(2017) Duman, Enes; Yildirim, Erkan; Ozdemir, Adnan; Arslan, Serdar; Aytekin, Cuneyt; Bovyat, Fatih; 0000-0002-9057-722X; F-4230-2011; ABI-3856-2020Background: To present our findings obtained from the treatment of wide-necked intracranial neurysms with flow diverter stents. Patients and Methods: Intracranial aneurysms were determined in 19 patients (14 females, 5 males; mean age, 56.6 years) between May 2011 and June 2014, and the patients were treated using flow diverter stents. A total of 28 flow diverter stents, including 9 Silk and 19 Pipeline stents were used. Occlusion rates evaluated with computed tomography at the end of month 6 and digital subtraction angiography after one year, intraoperative success, morbidity and mortality rates were determined. Results: A total of 20 endovascular interventions, including two interventions in two different aneurysms in one patient were performed in 19 patients. Flow diverter stents were successfully implemented for wide-necked aneurysms at a success rate of 100%. Coil treatment had previously been performed in four patients. Aneurysm occlusion rates were 77.2% at month 6 and 90.9% at the end of month 12. Conclusion: The use of flow diverter stents is a reliable and effective method in the treatment of wide-necked intracranial aneurysms with high aneurysm occlusion, and low morbidity and mortality rates.