IMPACT OF TEMPORARY HILAR CLAMPING DURING LAPAROSCOPIC PARTIAL NEPHRECTOMY ON POSTOPERATIVE RENAL FUNCTION: A PROSPECTIVE STUDY

ABSTRACTPurpose:: Laparoscopic partial nephrectomy for small renal tumors has been increasingly performed in the last few years. We prospectively evaluated preoperative and postoperative differential renal function by renal scan in patients with contralaterally functioning kidneys who underwent laparoscopic partial nephrectomy with hilar clamping.Materials and Methods:: From July 2002 to June 2003, 17 consecutive patients were included in this prospective protocol and underwent laparoscopic partial nephrectomy for exophytic tumors using en bloc hilar clamping. Preoperative renal scan with differential function was performed 1 month before and 3 months after surgery in all patients. 99technetium labeled diethylenetetraminepentaacetic acid scan was performed in all patients.Results:: Mean warm ischemia time was 22.50 ± 9.78 minutes (range 10 to 44). Preoperative differential renal function and glomerular filtration rate (GFR) in the affected kidneys were 50.20% ± 4.90% (range 43 to 58) and 75.56 ± 16.45 ml ...