The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Lin Yufeng - One of the best experts on this subject based on the ideXlab platform.
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mini percutaneous Nephroscopy in the treatment of upper urinary tract obstruction
Hainan Medical Journal, 2011Co-Authors: Lin YufengAbstract:Objective To concluded the clinical experience of mini-percutaneous Nephroscopy(mPCN) in the treatment of upper urinary tract obstruction(UUTO).Methods 54 cases with UUTO were underwent mPCN guided by the B-ultrasonic to drain the urine,then according to the pathogenesis,obstruction position,renal function,with or without secondary infection,the basic state of patients to decided the further treatment.Results After mPCN,49 cases of renal function were improving,14 cases of patients' renal function was improved among patients with renal failure,47 cases removed the stones by surgery,3 cases through orthotics relieve stenosis,5 cases of non-functioning kidney patients resort to nephrectomy.Conclusion mPCN guided by the B-ultrasonic can drain the urine quickly,improve the renal function,control the infection,help to improve the further inspection,determine the renal function and prognosis,provide the basis for the therapeutic schedule,and is safe,effective,simple and economic in the treatment of UUTO.
Weibing Li - One of the best experts on this subject based on the ideXlab platform.
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concomitant treatment of ureteropelvic junction obstruction and renal calculi with robotic laparoscopic surgery and rigid Nephroscopy
Urology, 2014Co-Authors: Ji Zheng, Zhansong Zhou, Zhiwen Chen, Xin Li, Weibing LiAbstract:Introduction The treatment of ureteropelvic junction obstruction (UPJO) and concomitant calculus poses a technically challenging situation. We present our experience with using rigid Nephroscopy for renal calculi removal during robot-assisted pyeloplasy (RAP) for UPJO. Technical Considerations From December 2010 to November 2012, 25 patients with UPJO had RAP at our institution; 9 of those had concurrent renal calculi, which were simultaneously treated with rigid Nephroscopy. For stone extraction, a rigid ureteroscope was passed through an assistant trocar under laparoscopic vision directly into a previously created pyelotomy. The stones were extracted using a rigid grasper or stone basket through the rigid ureteroscope. For the removal of the stones within the upper and lower calyces, the rigid ureteroscope was introduced into the incised renal pelvis through robotic trocars if the "assistant trocar" route failed. Complete stone clearance was achieved in 8 of 9 patients. Residual calculi in 1 patient were removed with a single session of extracorporeal shock wave lithotripsy. At the mean follow-up of 10.2 months, no patients had obstruction or recurrent stones. The mean operative time was 187.1 minutes, which was 40.9 minutes longer than the mean operative time in patients without renal calculi. There was no significant difference in blood loss, hospital stay, complications, and success rates between patients with and without renal calculi. Conclusion Our data suggest that the use of a concomitant rigid nephroscope and RAP is a safe and feasible option for the treatment of UPJO complicated with renal calculi.
Ji Zheng - One of the best experts on this subject based on the ideXlab platform.
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concomitant treatment of ureteropelvic junction obstruction and renal calculi with robotic laparoscopic surgery and rigid Nephroscopy
Urology, 2014Co-Authors: Ji Zheng, Zhansong Zhou, Zhiwen Chen, Xin Li, Weibing LiAbstract:Introduction The treatment of ureteropelvic junction obstruction (UPJO) and concomitant calculus poses a technically challenging situation. We present our experience with using rigid Nephroscopy for renal calculi removal during robot-assisted pyeloplasy (RAP) for UPJO. Technical Considerations From December 2010 to November 2012, 25 patients with UPJO had RAP at our institution; 9 of those had concurrent renal calculi, which were simultaneously treated with rigid Nephroscopy. For stone extraction, a rigid ureteroscope was passed through an assistant trocar under laparoscopic vision directly into a previously created pyelotomy. The stones were extracted using a rigid grasper or stone basket through the rigid ureteroscope. For the removal of the stones within the upper and lower calyces, the rigid ureteroscope was introduced into the incised renal pelvis through robotic trocars if the "assistant trocar" route failed. Complete stone clearance was achieved in 8 of 9 patients. Residual calculi in 1 patient were removed with a single session of extracorporeal shock wave lithotripsy. At the mean follow-up of 10.2 months, no patients had obstruction or recurrent stones. The mean operative time was 187.1 minutes, which was 40.9 minutes longer than the mean operative time in patients without renal calculi. There was no significant difference in blood loss, hospital stay, complications, and success rates between patients with and without renal calculi. Conclusion Our data suggest that the use of a concomitant rigid nephroscope and RAP is a safe and feasible option for the treatment of UPJO complicated with renal calculi.
Ronald J. Zagoria - One of the best experts on this subject based on the ideXlab platform.
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percutaneous nephrostomy with extensions of the technique step by step
Radiographics, 2002Co-Authors: Raymond B. Dyer, John D Regan, Peter V Kavanagh, Elaine G Khatod, Michael Chen, Ronald J. ZagoriaAbstract:Minimally invasive therapy in the urinary tract begins with renal access by means of percutaneous nephrostomy. Indications for percutaneous nephrostomy include urinary diversion, treatment of nephrolithiasis and complex urinary tract infections, ureteral intervention, and Nephroscopy and ureteroscopy. Bleeding complications can be minimized by entering the kidney in a relatively avascular zone created by branching of the renal artery. The specific site of renal entry is dictated by the indication for access with consideration of the anatomic constraints. Successful percutaneous nephrostomy requires visualization of the collecting system for selection of an appropriate entry site. The definitive entry site is then selected; ideally, the entry site should be subcostal and lateral to the paraspinous musculature. Small-bore nephrostomy tracks can be created over a guide wire coiled in the renal pelvis. A large-diameter track may be necessary for percutaneous stone therapy, Nephroscopy, or antegrade ureteroscopy. The most common extension of percutaneous nephrostomy is placement of a ureteral stent for treatment of obstruction. Transient hematuria occurs in virtually every patient after percutaneous nephrostomy, but severe bleeding that requires transfusion or intervention is uncommon. In patients with an obstructed urinary tract complicated by infection, extensive manipulations pose a risk of septic complications.
M Sanchez A Elipe - One of the best experts on this subject based on the ideXlab platform.
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technique and complications of percutaneous Nephroscopy experience with 557 patients in the supine position
The Journal of Urology, 1998Co-Authors: J Valdivia G Uria, Valle J Gerhold, J Lopez A Lopez, Villarroya S Rodriguez, Ambroj C Navarro, Ramirez M Fabian, J Rodriguez M Bazalo, M Sanchez A ElipeAbstract:AbstractPurpose: Percutaneous Nephroscopy is usually performed with the patient prone, which is uncomfortable for the patient and does not prevent damage to the colon. We assess the possibility of performing percutaneous Nephroscopy using local anesthesia with the patient supine, and evaluate the advantages and complications.Materials and Methods: A total of 557 consecutive percutaneous nephroscopies were attempted in 221 men and 242 women in the supine position. Patient age ranged from 8 to 87 years (mean 55.1). Patients are supine with a 3.1 serum bag below the ipsilateral flank. We catheterize the affected uretheral meatus with a 5F catheter through a flexible cystoscope. The tract is infiltrated with local anesthesia. The skin is punctured in the posterior axillary line which corresponds to approximately 1 cm. above the bag. We use an Alken set to dilate the tract to 30F, which is the size of the Amplatz sheath we commonly use.Results: Nephroscopy was performed in 519 cases (93.1%). Mean operation tim...
