Objective To evaluate the efficacy and safety of percutaneous nephrolithotomy under ultrasonic guidance for the treatment of renal calculi. Methods Percutaneous nephrolithotomy using pneumatic or holmium laser lithotripsy under ultrasonic guidance was performed in 26 patients from January 2005 to November 2006.Among them,46 patients had single stones and 27 had multiple renal calculi.Unilateral renal calculi were found in 67 patients and bilateral calculi in 6.Staghorn calculi were identified in 11 patients.Results Of the 73 patients,a successful stone removal on one session was achieved in 57 patients,a second-look stone removal was needed in 13 patients,and 3 patients underwent three times of operation.During the operation,a single tract was used in 53 patients,double tracts in 18 patients,and three tracts in 2.A mini-invasive tract(F14～F18) was used in 47 patients,and a standard tract(F24) was established in the remaining 26 patients.The operation time was 50～160 min(mean,86 min).The stone-free rate was 96.2%(68/73),and the residual stones in other 5 patients were all

Objective To evaluate the curative effectiveness of ureteroscopic pneumatic lithotripsy in the treatment of ureteral lithiasis.Methods Ureteroscopic pneumatic lithotripsy was performed in 158 cases of ureteral calculi(163 sides)by using the Wolf F8/9.8 rigid ureteroscope and the EMS pneumatic ballistic lithotriptor from August 2002 to April 2006.The operation was carried out under intravertebral anesthesia.Under the irrigation with normal saline,the ureteroscope was advanced into the ureter.Then the ureteral stones were fragmented by pneumatic lithotripsy and removed.Afterwards,a further exploration of the ureter above the lesion was conducted and a double-J drainage tube was placed.Results The operation time was 15-90 min(mean,40 min).The total successful fragmentation rate was 96.9%(158/163),involving a success rate of 86.6%(13/15)for upper stones,96.9%(46/49)for middle stones,and 100%(99/99)for lower stones.The stone migration into the renal pelvis was encountered in 2 cases of upper ureteral calculi(treated by extracorporeal shock wave lithotripsy following a double-J tube placement)and in 3 cases after stone fragmentation(treated by stone expulsion with drugs or extracorporeal shock wave lithotripsy following a double-J tube placement).Ureteral perforation happened during the procedure in 3 cases(1.8%),requiring a double-J tube placement.No serious complications occurred,such as ureteral mucous avulsion or rupture and injuries of neighboring organs or vessels.No conversion to open surgery was required.Follow-up checkups for 1-38 months in 125 cases with B-ultrasonography or KUB film found no recurrence.Conclusions Ureteroscopic pneumatic lithotripsy is a safe,effective,and feasible technique for ureteral lithiasis.

Objective To investigate the main causes and strategies for the difficulties in ureteroscopic lithotripsy.Methods From March 2004 to December 2006,19 cases of ureteral calculi,who experienced difficulties during holmium laser lithotripsy or pneumatic lithotripsy under a rigid ureteroscope,were analyzed retrospectively.Among the cases,3 had difficulties in ureteroscope placement due to the narrow ureteral ingress,6 owing to calculus obstruction complicated with ureteral inflammatory polypi,4 resulted from twisted ureter,and 6 because of stenosis of the ureter.Results In 15 of the patients,the operation was successfully performed by changing surgical approach,controlling the hydraulic irrigation,and incising the stenotic segments,etc.Two patients,who had stenotic ureter,received ESWL with double-J catheter dwelling.Lithotripsy failed in 2 cases,and PCNL was used to remove the calculi.The postoperative complications occurred in 4 cases,including 2 with mucosal laceration and 2 ureteral perforations.One of the 4 cases was transferred to an open surgery,and the other 3 were cured by conservative treatments.Conclusions Holmium Laser lithotripsy and pneumatic lithotripsy under a rigid ureteroscope are safe and effective in treating ureteral calculi.

Objective To evaluate the efficacy of trans-obturator tension free vaginal tape(TVT-O)for the treatment of stress urinary incontinence(SUI)in women.Methods From January 2006 to September 2007,15 female patients with SUI received TVT-O in our hospital.A 1-cm longitudinal incision was made along the anterior wall of the vagina for the dissection of the urethra from the vaginal submucosal space to the obturator membrane.Then,a butteryfly-shape guide pole was inserted to guide the puncture of a spiral needle from the obturator membrane to the skin covering the root of the thigh.Afterwards,a trans-obturator tape was placed underneath the urethra without tension.Results The operation time was 15-40 min(mean,30 min),and blood loss was 10-40 ml(mean,20 ml).No intraoperative complication occurred in the series.One patient developed urinary retention,and was relieved by indwelling urethral catheter.Ten patients complained pain at the root of the thigh,and was cured simultaneously 3 to 10 days postoperation.Fifteen of the patients were followed up for 2 to 19 months with a mean of 8 months,during which no recurrence was found.Conclusion TVT-O is a simple,effective and reliable method for SUI.

Objective To evaluate the efficacy of ureteroscopic pneumatic lithotripsy for ureteric calculi.Methods From January 2003 to June 2007,221 patients with ureteric calculi underwent ureteroscopic pneumatic lithotripsy in our hospital.Under continuous epidural anesthesia combined with spinal anesthesia,the surgery was performed in lateral lithotomy position.Double-J catheter was used for drainage after the operation.Results The mean operation time was 55 minutes(ranged from 15 to 118 minutes).Among the patients,the calculi were found in the upper ureter in 16 cases,middle segment in 52 cases,and lower ureter in 153 cases.A total of 228 stones in the 211 patients were all fragmented with a success rate of 100%.The discharging rate was 95.5%(211/221).ESWL was used in 7 cases with unsatisfied outcomes and 3 patients who had ipsilateral renal calculi.A 3-to 6-month follow-up was achieved in 189 of the patients,who had no recurrence during the period.Conclusions Ureteroscopic pneumatic lithotripsy is a minimal invasive and effective treatment for ureteric calculi.Postoperative ESWL is an alternative which can increase the rate of stone clearance.

38.5 ℃) and urine leakage were similar between the two groups [8.7% (4/46) vs 3.7% (1/27),?2=0.112,P=0.737; and 0 (0/46) vs 3.7% (1/27),?2=0.074,P=0.786]. Conclusions Both MPCNL and RLUL are effective and safe for impacted upper ureteral calculi. RLUL,which results in less blood loss but longer operation time,is feasible in advanced hospitals.

Objective To evaluate the efficacy and safety of percutaneous nephroscopic lithotripsy for the treatment of bilateral upper urinary calculi. Methods From July 2004 to December 2008,we performed percutaneous nephroscopic lithotripsy under X-ray or ultrasonic guidance for 35 patients with bilateral upper urinary calculi. Of the 35 patients,bilateral renal calculi were found in 18 patients,unilateral renal and unilateral ureteral calculus in 10,bilateral ureteral calculi in 7. Results In 35 patients (70 sides),the calculi was removed through a single tract in 49 sides,through double tracts in 18 sides,and through triple tracts in 3 sides. The mean operation time for unilateral PCNL was 66 min (ranged from 20 to 185 min). The stone-free rate was 80% (56/70) on one session. A second-look stone removal was needed in 8 laterals,and 3 laterals underwent three times of lithotomy. In three sides,a few residual renal stones were found after the first operation,but no second operation was performed. The final stone-free rate was 91.4% (64/70) in all of the cases,among which the stone-free rate was 100% (24/24) for ureteral stones and was 87% (40/46) for renal stones. In this series,no chest or abdominal injuries,intestinal perforation,or injuries to surrounding organs were detected. The patients were discharged from hospital in 5 to 30 days,and then were followed up for 3 to 6 months. During the follow-up,B-ultrasonography and KUB+IVP found no recurrence of calculi. Conclusions Percutaneous nephrolithotomy is effective and safe for bilateral upper urinary calculi. By skilled urologists in conditioned hospital,simultaneous bilateral percutaneous nephrolithotomy performed on bilateral upper urinary calculi can shorten the cycle time of treatment and hospitalization.

Objective To present the primary effectiveness and morbidity of metallic ureteral stent in treating the patients with malignant ureteral obstruction .Methods The retrospective study enrolled 11 patients received metallic ureteral stent placement because of malignant ureteral obstruction at our hospital between Jul.2012 and Jan.2014.Total of 16 stents were inserted including 5 bilateral stent insertion. There were 4 males and 7 females, with a mean age of 56 years (range 28 to 88 years).Mild to moderate hydronephrosis were identified by ultrasound and CTU in all patients , including 2 recurrent fever and 1 renal colic in affected side , however serum creatinine level is normal .There were 10 patients received stents insertion through cystoscopic or nephroscopic retrograde approach and 1 through nephroscopic antegrade approach,under superficial , spinal or intravenous anesthesia .Patients were scheduled for follow-up at 6 months intervals by KUB and ultrasound and would be examined ahead of time if there were any obstructive symptoms including recurrent fever or renal colic of the affected side .Outcomes and complications were observed during follow-up.Results In total,11 patients underwent 13 operations,including 2 by staging operations.Hydronephrosis , recurrent fever and renal colic were relieved in all patients after operation , showing 100%success rate.The mean follow-up was 9 months,in which,9 patients had not reached the scheduled time (1 year) while 2 patients exceed the time limit of stent exchange because of poor physical status.During the follow-up, 1 patient died of the progression of urothelial carcinoma .Nine stents of 5 patients keep alleviating the obstruction without hydronephrosis evaluated by ultrasonography .Stents failure occurred in 6 ureters of 5 patients, including 3 encrustation and 2 migration, presenting of progressive hydronephrosis and recurrent fever . Functional restoration was achieved in one of the encrusted stent undergoing ESWL .One stent with encrustation fail to be removed and a polymer double-J stent replacement in the same side was required for drainage .The other 3 nonfunctional stents were removed and replaced by polymer double-J stents.Conclusions Ureteral obstruction secondary to extrinsic compression contributing to relatively stable malignant tumor could be treated safely and sufficiently with the resonance metallic stent . Surveillance on schedule and regularly change within 1 year is critical to achieve successful outcomes .Tumor progression with ureteral invasion as while as encrustation can cause stent failure ,and in these cases the stent should be changed every 6 months or less.

Objective To analyze the efficacy, safety, and learning curve of holmium laser enucleation of prostate (HoLEP). Methods From June 2014 to June 2015, there were 45 consecutive patients with benign prostatic hyperplasia who underwent HoLEP performed by one experienced urologic doctor ( having surgical experience of transurethral resection of prostate in more than 500 cases) in our hospital. The patients were divided into three groups:group A (patient 1-15), group B (patient 16-30), and group C (patient 31-45). The patient age, prostate specific antigen (PSA) and prostatic volume evaluated by ultrasound were similar among the 3 groups (P>0. 05). Clinical data including operative time, hemoglobin decrease, and catheterization duration were compared among the 3 groups. The efficiency for enucleation was calculated as prostatic volume divided by operation time. Results The average enucleation efficiency of 3 groups was 0. 34 ± 0. 14, 0. 36 ± 0. 16, and 0. 49 ± 0. 18 ml/min, respectively, with a significant difference among the 3 groups (F =4. 025, P =0. 025). The group C obtained significantly improved efficiency as comparing with the group A and group B (P=0. 013 and 0. 028, respectively). No significant difference was found in operative time, hemoglobin decrease, catheterization duration, and rate of blood transfusion and complication among the 3 groups (P>0. 05). There were several surgery-related complications, including 2 cases of conversion to TURP, 5 cases of postoperative temperature more than 38℃, 4 cases of severe stress incontinence, 1 case of bladder mucosal injury by morcellator, 1 case of urethral stricture, and 1 case of postoperative hemorrhage. It took 30 cases to overcome learning curve of HoLEP by self-taught modality. Conclusions For experienced endourologist, HoLEP can be learn by self-taught modality after 30 cases training. Cases with small prostatic volume less than 60 ml should be selected in the early stage of the learning curve.

1cm.