Abstract: Objective: To summarize our experience of retroperitoneal laparoscopic living donor nephrectomy, our continuous technical improvements and refinement of this skill and standardization of each procedure of this operation. Methods: Having approved by hospital ethical committee and local government administration, a total of 193 living donors underwent retroperitoneal laparoscopic living donor nephrectomy from Dec.2003 to Feb.2016 in our department. Under general anaesthesia, the operation was performed through 3 lumbar ports. After the kidney was liberated fully and the ureter was severed 7-8 cm under the lower pole of the kidney, the renal artery and vein were blocked with endo-cut or hem-o-lok separately and then severed. Then the kidney was taken out quickly and flushed with 4 ℃ kidney preserving fluid immediately, the donor kidneys were then preserved in iced saline until kidney transplantation. Clinical data about operation time, volume of blood loss, perioperative complications, renal function of both donors and recipients before and after operation were collected. Results: The 193 retroperitoneal laparoscopic living donor nephrectomy operations were successful with only one operation was converted to open living donor nephrectomy because of hemorrhage and unclear operation field during the operation. The average operation time was 85 min (55-135 min), the average blood loss was 60 mL (20-200 mL), and no donor needed blood transfusion during or after operation. Three donors were found to have hematoma of renal fossa after operation and none of them required further treatment. The average hospital stay after operation was 5.7 days (4-9 days). In the study, 162 donors were followed up for an average of 42 months (1-58 months) and they were all healthy. Two kidney recipients had urinary bladder anastomosis leakage after operation and both needed surgical repair, a new anastomosis of ureter and bladder were made. Three kidney recipients had kidney subcapsular hematoma but required no further treatment. One kidney recipient had delayed graft function and recovered finally and the renal function of other recipients were all normal. Renal function of both donors and recipients during the follow up period were normal. Conclusion: Retroperitoneal laparoscopic living donor nephrectomy is a safe and reliable technique, it may become a standardized operation for living kidney transplantation after continuous technical improvement. Precautions must be taken to avoid complications and a skilled hand is necessary for success.

Key words: Laparoscopes, Living donors, Nephrectomy, Kidney transplantation