LAPAROSCOPY/NEW TECHNOLOGY
382
including total amount of oxalate, bioavailability of oxalate, dietary calcium and gut function. This retrospective study suggests that decreasing oxalate consumption while maintaining normal calcium intake promotes reduction of urinary oxalate excretion in most patients. The amount of dietary oxalate intake recommended by these investigators, 40 mg daily, is quite difficult for patients to achieve, and perhaps a better ceiling would be 100 mg. The lack of response to this regimen in those with a higher body mass index may be due to increased endogenous oxalate synthesis. There are limited means of controlling the latter process. Dean G. Assimos, MD
Laparoscopy/New Technology Re: Micropercutaneous Nephrolithotomy (Microperc) vs Retrograde Intrarenal Surgery for the Management of Small Renal Calculi: A Randomized Controlled Trial R. B. Sabnis, R. Ganesamoni, A. Doshi, A. P. Ganpule, J. Jagtap and M. R. Desai Department of Urology, Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India BJU Int 2013; 112: 355e361.
Abstract available at http://jurology.com/ Editorial Comment: For intrarenal stones less than 1.5 cm a new technique of microperc (16Fr micropuncture needle) has been developed to be competitive with extracorporeal shock wave lithotripsy and ureterorenoscopy. The purported advantages are increased stone clearance rate comparable to percutaneous nephrolithotomy with decreased morbidity due to the smaller tract size, and lower capital costs compared to extracorporeal shock wave lithotripsy and ureteroscopy. In this randomized study the authors found that the microperc technique is competitive with ureterorenoscopy. Stone clearance rates, operative time and morbidity were comparable. Microperc was associated with greater reduction of hemoglobin and modestly increased pain, although the ureteroscopy cases had a higher incidence of stenting. Jeffrey A. Cadeddu, MD
382
including total amount of oxalate, bioavailability of oxalate, dietary calcium and gut function. This retrospective study suggests that decreasing oxalate consumption while maintaining normal calcium intake promotes reduction of urinary oxalate excretion in most patients. The amount of dietary oxalate intake recommended by these investigators, 40 mg daily, is quite difficult for patients to achieve, and perhaps a better ceiling would be 100 mg. The lack of response to this regimen in those with a higher body mass index may be due to increased endogenous oxalate synthesis. There are limited means of controlling the latter process. Dean G. Assimos, MD
Laparoscopy/New Technology Re: Micropercutaneous Nephrolithotomy (Microperc) vs Retrograde Intrarenal Surgery for the Management of Small Renal Calculi: A Randomized Controlled Trial R. B. Sabnis, R. Ganesamoni, A. Doshi, A. P. Ganpule, J. Jagtap and M. R. Desai Department of Urology, Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India BJU Int 2013; 112: 355e361.
Abstract available at http://jurology.com/ Editorial Comment: For intrarenal stones less than 1.5 cm a new technique of microperc (16Fr micropuncture needle) has been developed to be competitive with extracorporeal shock wave lithotripsy and ureterorenoscopy. The purported advantages are increased stone clearance rate comparable to percutaneous nephrolithotomy with decreased morbidity due to the smaller tract size, and lower capital costs compared to extracorporeal shock wave lithotripsy and ureteroscopy. In this randomized study the authors found that the microperc technique is competitive with ureterorenoscopy. Stone clearance rates, operative time and morbidity were comparable. Microperc was associated with greater reduction of hemoglobin and modestly increased pain, although the ureteroscopy cases had a higher incidence of stenting. Jeffrey A. Cadeddu, MD
