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Öğe Factors Affecting eGFR Slope of Renal Transplant Patients During the First 2 Years(Elsevier Science Inc, 2019) Atay, Feyza Firat; Taskapan, Hulya; Berktas, Bayram; Yildirim, Okan; Dogan, Murat; Piskin, TurgutPurpose. In healthy individuals, glomerular filtration rate decreases by 1 mL/min/y after a peak level of 125.0 mL/min has been reached in adulthood. Any reduction greater than this is a progressive slope (slope more negative than 1 mL/min/y, stable [-1 to +1]), or an improvable slope if it shows more of an increase, that is, greater than +1.0 mL/min/y). The aim of the study was to determine the factors affecting estimated glomerular filtration rate (eGFR) slope during the first 2 years of renal transplant in patients with negative pretransplant panel-reactive antibody. Materials and Methods. The characteristics of 59 renal transplant patients, such as age, sex, etiology, and 2 years of laboratory data, were collected retrospectively. For each patient, the eGFR decline rate (slope) (mL/min-1/1.73 m(2)-1/y-1) was determined by linear regression analysis using all calculated eGFR values over the study period. Findings. Of 59 patients, 7 (11.8%) had a progressive slope, 22 (37.2%) had a stable slope, and 30 (50.8%) had an improvable slope. The first-year mean tacrolimus level was lower in patients with progressive slope than in the patients with stable slope and improvable slope (P < .022). The determinants of eGFR slope in multiple regression analysis were post-transplant hypertension (beta = 0.393; P = .002) and the first-year mean tacrolimus level (beta = 0.320; P =.01), whereas age, serum albumin, and 2-year mean tacrolimus level did not reach the level of significance. Conclusion. Keeping tacrolimus levels high in the first year to prevent eGFR declining is important.Öğe Management of non-vascular complications following renal transplantation using percutaneous approach(Edizioni Luigi Pozzi, 2018) Yildirim, Ismail Okan; Berktas, Bayram; Saglik, Semih; Piskin, Turgut; Dogan, Murat; Sahin, Idris; Taskapan, HulyaOBJECTIVE: Non-vascular complications following renal transplantation can cause graft failure. In this study, we present our two-year experience with percutaneous treatment for non-vascular complications following renal transplantation. PATIENTS AND METHODS: A total of 30 patients who underwent percutaneous radiological treatment between March 2014 and July 2016 were included in the study. RESULTS: Following renal transplantation, a total of 36 percutaneous radiological procedures which includes hydronephrosis secondary to ureteral stricture (n. 15), clinical symptom producing lymphocele due to pressure (14) and creatinine elevated nondilated grafts (n. 7) after excluding other reasons of creatinine elevation, were performed. Six patients received percutaneous treatment for both ureteral stricture and lymphocele. The patients underwent balloon dilatation and double-J ureteral stent due to ureteral stricture. The mean pre- and post-procedural creatinine levels were 4.36 +/- 2.84mg/dL and 2.17 +/- 1.24 mg/dL respectively (p=0.004), indicating a significant difference. For lymphocele treatment, sclerosing agents were injected and lymphatic leakage areas were injected with percutaneous glue. The mean pre- and post-procedural creatinine values were 2.97 +/- 1.78 mg/dL and 1.75 +/- 1.18 respectively (p=0.002), indicating a significant difference. Nephrostomy catheters were placed for patients with elevated creatinine levels and non-dilated collecting system. The mean pre- and post- nephrostomy creatinine levels were 3.55 +/- 2.36 mg/dL and 2.57 +/- 1.82 mg/dL respectively (p>0.05), indicating no statistically significant difference. CONCLUSION: The results of our study suggest that percutaneous treatment is an effective method for the treatment of non-vascular complications following renal transplantation, and, therefore, should be the first option for the preservation of graft functions.Öğe Management of non-vascular complications following renal transplantation using percutaneousapproach(Edızıonı luıgı pozzı, vıa panama 68, 00198 rome, ıtaly, 2018) Yildirim, Ismail Okan; Berktas, Bayram; Saglik, Semih; Piskin, Turgut; Dogan, Murat; Sahin, Idris; Taskapan, Hulya; Sarac, KayaOBJECTIVE: Non-vascular complications following renal transplantation can cause graft failure. In this study, we present our two-year experience with percutaneous treatment for non-vascular complications following renal transplantation. PATIENTS AND METHODS: A total of 30 patients who underwent percutaneous radiological treatment between March 2014 and July 2016 were included in the study. RESULTS: Following renal transplantation, a total of 36 percutaneous radiological procedures which includes hydronephrosis secondary to ureteral stricture (n. 15), clinical symptom producing lymphocele due to pressure (14) and creatinine elevated nondilated grafts (n. 7) after excluding other reasons of creatinine elevation, were performed. Six patients received percutaneous treatment for both ureteral stricture and lymphocele. The patients underwent balloon dilatation and double-J ureteral stent due to ureteral stricture. The mean pre- and post-procedural creatinine levels were 4.36 +/- 2.84mg/dL and 2.17 +/- 1.24 mg/dL respectively (p=0.004), indicating a significant difference. For lymphocele treatment, sclerosing agents were injected and lymphatic leakage areas were injected with percutaneous glue. The mean pre- and post-procedural creatinine values were 2.97 +/- 1.78 mg/dL and 1.75 +/- 1.18 respectively (p=0.002), indicating a significant difference. Nephrostomy catheters were placed for patients with elevated creatinine levels and non-dilated collecting system. The mean pre- and post- nephrostomy creatinine levels were 3.55 +/- 2.36 mg/dL and 2.57 +/- 1.82 mg/dL respectively (p>0.05), indicating no statistically significant difference. CONCLUSION: The results of our study suggest that percutaneous treatment is an effective method for the treatment of non-vascular complications following renal transplantation, and, therefore, should be the first option for the preservation of graft functions.Öğe Mucormycosis Presented with Facial Pain in a Renal Transplant Patient: A Case Report(Elsevier Science Inc, 2019) Berktas, Bayram; Taskapan, Hulya; Bayindir, Tugba; Kayabas, Uner; Yildirim, Ismail OkanIntroduction. Mucormycosis is a severe infection in renal transplant recipients. Here, we report a case of maxillary sinus mucormycosis in a patient who presented with a facial pain complaint. Case. A 51-year-old female patient with renal transplantation due to autosomal dominant, polycystic kidney disease and diabetic nephropathy was admitted to our hospital with facial pain and minimal edema of the left half of her face on the 8th month of transplantation. On physical examination, there was only tenderness and slight edema on the left half of the face. On the paranasal computed tomography, extensive soft tissue densities involving septations, filling the left maxillary sinus, extending to the nasal cavity, and obliterating the left osteometeal unit were observed. Because facial pain was not relieved by antibiotics and several, potent analgesic drugs on the second day, mucormycosis infection with bone involvement was suspected. A left maxillary sinus excision was performed. Microscopic examination of the debridement specimen revealed necrotic bone interspersed with fungal hyphae, and culture isolated Rhizopus oiyzae. Liposomal amphotericin B was started. The patient was on tacrolimus, prednisolone, and mycophenolate mofetil. Tacrolimus was switched to cyclosporine to regulate serum glucose levels. The left maxillary sinus was washed with liposomal amphoterin B daily and curetted with intervals. The patient started dialysis because of severe renal function loss. The patient was discharged on the 96th day of liposomal amphotericin B. Conclusion. It should be kept in mind that mucormycosis may be present in the sinuses even if there is no evidence for nasal, oral, and dental examination in renal transplant patients with facial pain.Öğe Transplantation Using Renal Grafts With Multiple Renal Arteries: A Putative Study on the Impact of Arterial Reconstruction Technique and Site of Implantation on Outcomes(Elsevier Science Inc, 2021) Dogan, Sait M.; Dogan, Gulec; Simsek, Cenk; Okut, Gokalp; Berktas, Bayram; Simsek, Arife; Kutluturk, KorayBackground. In the present retrospective study, we analyzed the outcomes of patients transplanted with grafts with multiple renal arteries (MRAs). Patients and Methods. In total, 89 patients were transplanted with renal grafts with MRAs from 2003 to 2018. Demographic characteristics; type of donor; warm and cold ischemia times; arterial anastomosis technique; complications; graft function at first month, first year, and last outpatient clinic visit; and patient and graft survival were all retrospectively evaluated. Results. The mean age of the patients was 40.4 +/- 13.3 years. Fifty-six patients (62.9%) were male. In total, 42 patients (47.2%) received renal grafts from living related donors. In group A (n = 24; 27%), anastomosis was performed separately to the recipient external or internal iliac arteries; in group B (n = 38; 42.7%), the secondary artery was anastomosed to the main artery in a side-to-side fashion to form a single common orifice; in group C (n = 27; 30.3%), secondary arteries were anastomosed to the main renal artery in an end-to-side fashion. Creatinine clearance at the first month was significantly lower for deceased-donor grafts compared to living-donor renal grafts (P < .05). Creatinine clearance in the first postoperative month was significantly lower in group A and creatinine clearance in the first year was significantly lower in group C (P <.05). The best survival was found for anastomosis to the internal iliac artery (P < .05). Conclusion. MRAs can be safely used and the reconstruction technique does not matter if the graft kidney's arterial supply is preserved and the internal iliac artery is chosen for anastomosis.
