Kidney replacement is the best option for treatment of chronic renal failure patient. This treatment sometimes associates with some complications including: immunologic, vascular and urologic. The vascular complication is a dangerous complication which sometimes may result in losing allograft kidney.The vascular complications including: thrombosis and stricture. These complications can be induced by rejection or by technical fault. The technical fault including: the handling of the vessel and suturing of the vessel. One of the preventable faults is pursiness which may predispose the vessel to the stenosis. We studied the making expansion space between the vessel and first knotting of stitching for prevention of the pursiness of the vessel post anastomosis. Material and methods:One hundred chronic kidney disease patients 51 males and 49 females with age between 15-67 have been operated for kidney transplant surgery at Imam Reza hospital (teaching hospital) since 2008 -2011. All of the patients have received allograft kidney from live unrelated donors. During surgery after preparation place for allograft kidney at retroperitoneal at fosse of iliac the internal iliac artery (hypogasteric artery) have been selected for renal artery anastomosis and external iliac vein have been selected for renal vein anastomosis. During vessel anastomosis between vessel and first knotting of stitching (continue suture with single thread) 5mm distance have been made as expansion space. After removing the clamp from the vessel bleeding has been controlled, post operation the kidney has been followed by color Doppler ultrasound.Results: Post declamping the vessel, the expansion space was vanished and the hemeostasis was nearly complete without any significant bleeding and also without detecting any stenosis at anastomosing site with follow up with color Doppler ultrasound at least for 6 months post operation.Conclusions: making expansion space between the first knot of stitching and the vessel at the anastomosing site for prevention of the pursiness of the vessel and stenosis is safe.

Background: Kidney transplant is a fair option for treatment of a chronic renal failure. Although the outcome and results of kidney transplant are good, it may be associated with some complications. One of the important complications is urinary infection. Objectives: The aim of this study was to investigate the role of early removal of the catheter in renal transplant patients on the reduction of urinary tract infections. Patients and Methods:This study was conducted as a clinical trial. Around 88 transplanted patients were enrolled and randomly divided into two groups. In the first group, the patients were taken 3 days after the transplant, and in the second group, patients were removed 7 days after the Foley catcher transplant. Urine culture was performed on two occasions. Then, the patients' data were analyzed using SPSS version 20. Results: After examination of urine and analyzing the results with t test, it showed that infection of urine in the time of removal of urethral catheter was lower than 7 days after removing urethral catheter (P < 0.05). In patients in whom catheter of urethral had been removed 3 days after the operation, approximately urinary tract infection (UTI) was 50% less than those in whom urethral catheter was removed 7 days after the operation. Conclusions: Early removal of catheter has fundamental effects on UTI after kidney transplant and it seems that early removal of urethral catheter may be safe and reasonable in renal transplant of the recipient patient.

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