Browsing by Author "Karayagiz, Abdulhak Hamit"

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    Novel Once-daily Extended-release Tacrolimus Versus Twice-daily Tacrolimus in De Novo Kidney Transplant Recipients During the Early Posttransplant Period
    (GALENOS PUBL HOUSE, 2022-01-01) Yilmaz, Gulay; Ozdemir, Ebru; Yildar, Murat; Karayagiz, Abdulhak Hamit; Berber, Ibrahim; Cakir, Ulkem
    Objective: Tacrolimus is used in more than 80\% of kidney transplant recipients due to its ability to avoid rejection. Irregularities in tacrolimus level may affect clinical outcomes by subjecting patients to adverse events associated with graft rejection or immunosuppressive therapy. There are two forms of tacrolimus
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    Renal Arterial and Venous System Variations in 1,073 Kidney Donors in Turkey
    (ISTANBUL TRAINING \& RESEARCH HOSPITAL, 2021-01-01) Karayagiz, Abdulhak Hamit; Cenal, Ulukan; Erturk, Turker; Ozdemir, Ebru; Polatkan, Seyit Ali Volkan; Yilmaz, Gulay; Cakir, Ulkem; Berber, Ibrahim
    Introduction: Renal vasculature variations are seen in both arterial and venous systems, In Turkey, 80\% of kidney transplantations are performed by living donors. Therefore, this study aimed to identify the incidence and morphologic variations of renal vessels in a group of Turkish kidney donors. Methods: The computed tomography angiography of 1,073 kidney donors were retrospectively evaluated for vascular variations, such as multiple renal arteries (MRA), polar or accessory renal arteries (ARA), early division of renal artery, multiple renal veins (MRV), retro-aortic renal vein (RARV), and inferior vena cava duplication. Results: One vascular variation in the renal vascular system was found in 637 of 1,073 (59.4\%) kidney donors. The MRA was observed in 380 (35.4\%) donors. The ARA were reported in 180 (16,8\%) and 227 (20.2\%) donors, respectively. Renal arteries were divided earlier than expected in 230 (21.4\%) donors. The MRV and RARVS were seen in 205 (19.1\%) and 77 (7.2\%) patients, respectively. Only 2 cases of inferior vena cava duplication were determined. Conclusion: Renal arterial and venous system variations are very common, and detailed preoperative evaluation provides an opportunity to choose the best surgical modality and minimize intra- and post-operative complications.