以肾中盏为目标肾盏行气压弹道联合超声碎石治疗鹿角形结石的效果及安全性

目的：探讨以肾中盏为目标肾盏,采用气压弹道联合超声碎石方式治疗鹿角形结石的效果及安全性。方法：取俯卧位,采用气压弹道联合超声碎石的方式,以肾中盏为目标肾盏行经皮肾镜碎石术（percutaneous nephrolithotomy,PCNL）治疗鹿角形结石患者145例184侧,其中不完全性鹿角形结石115例侧,完全性鹿角形结石69例侧。观察结石的排除率及并发症。结果：144例侧行一期单通道碎石（中盏）,7例侧行一期双通道碎石（中盏及下盏5例,中盏及上盏2例）;2例侧残留肾盏结石未进一步处理,自动出院;31例侧行二期碎石,单通道者29例,其中4例先行ESWL再行PCNL碎石;双通道者2例（中盏及上盏1例,中盏及下盏1例）。151例侧排尽结石,其中完全性鹿角形结石54例侧,不完全性鹿角形结石97例侧,结石清除率82．1％。手术时间120～330min,平均（147±23）min。血红蛋白下降1～4g／L,平均下降（2．0±0．6）g／L,术中输血22例,术后输血5例;术后肾盂内感染3例,合并肾周感染、单侧分肾功能受损1例。平均住院时间（13．0±3．5）天。结论：以肾中盏为目标肾盏行PCNL治疗鹿角形结石是非常有效和安全的;气压弹道联合超声碎石对鹿角性结石的清除率较高,治疗时问短,并发症少。     

Safety and efficacy of percutaneous nephrolithotomy for the treatment of paediatric urolithiasis

INTRODUCTION

Paediatric percutaneous nephrolithotomy (PCNL) has revolutionised the treatment of paediatric nephrolithiasis. Paediatric PCNL has been performed using both adult and paediatric instruments. Stone clearance rates and complications vary according to the technique used and surgeon experience. We present our experience with PCNL using adult instruments and a 28Fr access tract for large renal calculi in children under 18 years.

METHODS

All patients undergoing PCNL at our institution between 2000 and 2009 were reviewed. Demographics, surgical details and post-operative follow-up information were obtained to identify stone clearance rates and complications.

RESULTS

PCNL was performed in 32 renal units in 31 patients (mean age: 10.8 years). The mean stone diameter was 19mm (range: 5–40mm). Twenty-six cases required single puncture and six required multiple tracts. Overall, 11 staghorn stones, 10 multiple calyceal stones and 11 single stones were treated. Twenty-seven patients (84%) were completely stone free following initial PCNL. Two cases had extracorporeal shock wave lithotripsy for residual fragments, giving an overall stone free rate of 91% following treatment. There was no significant bleeding or sepsis encountered either during the operation or in the post-operative setting. No patient required or received a blood transfusion.

CONCLUSIONS

Paediatric PCNL can be performed safely with minimal morbidity using adult instruments for large stone burden, enabling rapid and complete stone clearance.     

肾上盏入路经皮肾镜取石术的疗效与安全性探讨

目的 评价经肾上盏入路行PCNL的疗效及安全性.方法 2007年10月至2009年10月行经肾上盏入路PCNL治疗肾结石患者42例.其中鹿角形结石10例,肾盂结石22例,肾上盏结石7例,下盏多发结石3例;合并输尿管上段结石4例,合并肾盂输尿管连接部狭窄(UPJO)2例;结石长径2.0～6.5 cm,平均3.4 cm.B超引导下选取肾上盏穿刺,穿刺点选在第10或11肋间,建立经皮肾通道(16～26 F).经皮肾镜或输尿管镜下气压弹道或钬激光碎石. 结果 42例均一期成功建立经皮肾通道并碎石.单通道取石36例(85.7%),双通道取石6例(14.3%).手术时间30～140 min,平均65 min.术后发热4例(9.5%),输血1例(2.4%),肾盂穿孔1例(2.4%).无气胸、血胸、腹腔脏器损伤.一期结石清除率88.1%(37/42),3例(7.1%)行二次肾镜取石,2例(4.8%)辅助体外冲击波碎石(ESWL)治疗. 结论经肾上盏入路PCNL活动范围大,对于部分复杂性肾结石碎石取石方便,是一种安全有效的方法.

Abstract：

Objective To evaluate the efficacy and safety of percutaneous nephrolithotomy (PCNL)guided by ultrasonography through upper pole access. Methods From October 2007 to October 2009, 42 patients with upper urinary tract calculi underwent PCNL through upper pole access.Among these cases, there were 10 cases of staghorn calculi, 22 cases of renal pelvis calculi, 7 cases of the upper calyx calculi, 3 cases of the lower calyx calculi, 4 cases combined with ureter calculi and 2 cases combined with ureteropelvic junction obstruction. The stone measured from 2.0 to 6.5 cm (average: 3.4 cm) in length. Working tunnels (F16-F26) were established through the 10th or llth intercostals. Pneumatic or holmium laser lithotripsy was used to disintegrate and remove stones by nephroscopy or ureteroscopy. Clinical data including operation time, complications and stone free rate were analyzed retrospectively. Results All the operations were completed in one session, single tract was used in 36 cases(85.7%), double tracts were used in the other 6 cases(14.3%). The stonefree rate after one session was 88.1% (37/42), 3 cases(7.1%) received a second-session PCNL, 2 cases (4.8%)underwent ESWL after operation. The mean operative time was 65 min(30- 140 min).Postoperative surgery-related infection rate was 9. 5% (4/42). One patient (2. 4%)required blood transfusion. Perforation of the pelvis occurred in 1 patient(2.4 %). No pleural or important organ injury occurred. Conclusion The upper pole access for PCNL can be convenient to remove stones,this method is a highly efficient and safe technique.     

腔内弹道碎石加ESWL联合治疗复杂上尿路结石的临床观察

目的：探讨输尿管镜下气压弹道碎石,体外冲击波碎石（ESWL）及经皮肾穿刺取石联合治疗复杂性上尿路结石的疗效。方法：自1998年8月－2000年12月分别采用输尿管镜下气压弹道碎石,ESWL及经皮肾穿刺取石联合治疗复杂性上尿路结石133例。结果：结石总排净率为90．2％（120／133）,其中肾铸形结石排净率为87．9％（29／33）,输尿管结石排净率为91．0％（91／100）,并发症主要为输尿管穿孔及顽固血尿,占3．7％,结论：采用此联合方法治疗复杂性上尿路结石的排净率高,损伤小,可有效地避免开放手术之痛苦。     

Exclusive piezoelectric lithotripsy in the treatment of calculi larger than 30 mm (partial or complete coralliform, pyelic calculi)

Thirty patients with partial or total staghorn stones or calculi larger than 30 mm were treated by piezoelectric lithotripsy (PEL) monotherapy using an EDAP LT-01 lithotripter with ultrasound guidance. Nineteen of these patients had pelvic stones; the other 11 had partial (9) or total (2) staghorn stones. All patients first underwent an initial lithotripsy session. No anesthesia or IV sedation was required in any case. If stone fragmentation was achieved during this first session, a double-J stent was inserted before the second lithotripsy session. Prior to the first session, 18 of 30 patients had sterile urine cultures; 12 of 30 presented major distension of the excretory tract. Results were analyzed to determine the factors influencing the outcome of this therapy. Three months after the first session, patients were considered cured if their stones had completely disappeared according to plain abdominal films (14 of 30, 46%). In seven patients (23.3%) fragmentation had occurred but residual fragments remained (1 to 3 fragments less than or equal to 4 mm). No fragmentation was obtained after the first session in nine patients (30.7%) (1 total staghorn stone, 8 pelvic stones). The mean number of treatment sessions was five (range, 1 to 15). Complications occurred in only 10% of patients (3 of 30): two steinstrassen and one acute pyelonephritis. Eighty-three percent of patients without major excretory tract distension and 55% of patients whose initial urine culture was sterile achieved a stone-free state. Therefore the best indications for PEL monotherapy for calculi larger than 30 mm are pelvic stones and partial staghorn stones and no major excretory tract dilatation in patients with sterile initial urine cultures.(ABSTRACT TRUNCATED AT 250 WORDS)     

Current concepts in the relative efficacy of percutaneous nephrostolithotomy and extracorporeal shock wave lithotripsy

Summary Extracorporeal shock wave lithotripsy (ESWL) and percutaneous nephrostolithotomy (PCNL) have largely replaced open surgical operations for the management of upper urinary tract calculi. ESWL is generally preferred for calculi less than or equal to 2 cm as morbidity is lower than PCNL and success rates comparable. However, the morbidity of ESWL rises substantially for stones greater than 2 cm, while the stone-free rate is lessened compared to PCNL (41% vs. 82%, p<0.01), suggesting that PCNL is preferred for most larger stones. Results for staghorn calculi comparable to anatrophic nephrolithotomy with lowered morbidity may be achieved with PCNL followed by ESWL. PCNL is also preferred for stone-containing, calyceal diverticula.     

超声引导下针状肾镜联合标准通道PCNL治疗鹿角形结石的安全性和有效性

目的总结超声引导下针状肾镜联合标准通道经皮肾镜取石术(percutaneous nephrolithotomy,PCNL)治疗鹿角形结石的初步临床应用经验,探讨其安全性和有效性。方法回顾性分析2017年12月至2019年6月北京清华长庚医院收治的65例鹿角形结石患者的临床资料。男41例,女24例。年龄(53.5±8.9)岁。体质指数(25.1±2.9)kg/m2。结石最大径(10.9±3.1)cm。双侧鹿角形结石3例,完全鹿角形结石38例。术前无积水或轻度积水36例。既往有同侧肾结石手术史12例。孤立肾9例。65例均行超声引导下针状肾镜联合标准通道PCNL。手术采用全麻,患者取俯卧位。超声引导下经皮肾穿刺扩张后建立F24标准皮肾通道,肾镜下应用气压弹道联合超声负压吸引清石系统处理鹿角形结石主体。针状肾镜由F4.2针状金属外鞘和通过螺旋接口相连接的三通管针柄组成,三通管的3个接头可分别置入0.6 mm视频光纤、200μm钬激光光纤和连接液体灌注装置。标准通道肾镜碎石后残留的平行盏结石采用超声引导下针状肾镜穿刺进入目标盏后,连接钬激光光纤进行碎石。结果本研究65例中,3例为双侧结石,共68侧手术。中位手术时间为79.8(45~129)min。通道建立时间中位值为4.8(2.5~9.6)min。术中标准通道建立中位值为1.5(1~3)个,针状肾镜穿刺中位值为1.0(1~3)次。术后第1天血红蛋白下降中位值为10.6(0~25.9)g/L。术后住院时间中位值为5.5(4~7)d。总并发症发生率为10.3%(7例),其中ClavienⅠ级5例,包括术后发热2例,镇痛剂使用3例;ClavienⅡ级2例,均为输血。一期结石清除率79.4%(54/68)。14例有残石者中,9例行二期手术治疗,其中7例残石被清除,最终结石清除率为89.7%(61/68)。结论采用超声引导下针状肾镜联合标准通道PCNL治疗鹿角形结石是安全、有效的,术后早期清石率较高,并发症发生率较低。     

Supra-costal tubeless percutaneous nephrolithotomy is not associated with increased complication rate: a prospective study of safety and efficacy of supra-costal versus sub-costal access

Background

To assess the morbidities of tubeless percutaneous nephrolithotomy (PCNL) using supra-costal access and re-evaluate traditional concept of increased complications with supra-costal access.

Methods

From January 2010 to December 2014, a single surgeon performed 118 consecutive one-stage fluoroscopic guided PCNL’s for complex renal and upper ureteral stone. Our definition for complex renal stone is defined as partial or complete staghorn stone, multiple renal stones in more than 2 calyxes, obstructive uretero-pelvic stone >?2?cm, and a renal stone in single functional kidney. Inclusion criteria include: staghorn stones, renal calculi >?2?cm in diameter, upper ureteral stone >?1.5?cm in diameter. Exclusion criteria for tubeless PCNL include: significant bleeding or perforation of the collecting system, large residue stone, multiple PCNL tract and obstructive renal anatomy. Morbidity, operation time, analgesia requirement, length of hospital stay, stone- free rate, were analyzed.

Results

Of the 118 consecutive PCNL, eighty-six patients underwent tubeless PCNL (56 supra-costal and 30 sub-costal) and included in our prospective follow-up period. The mean age, operation side, stone locations were similar. The male to female ratio is higher in supra-costal than sub-costal. Large renal stones and staghorn stones makes up for most patients (supra-costal: 75%, sub-costal: 80%). The stone–free rate of supra-costal group was 59% (33/56) and in sub-costal group was 50% (15/30). The operative times, length of stay, post-op analgesic use, hematocrit change was similar in both groups. The overall complication rate is 6% [supra-costal (1/56), sub-costal (4/30)] with the majority being infectious complications.

Conclusions

Supra-costal access above 12th rib during tubeless PCNL is safe and effective procedure and is not associated with higher incidence of post-op complications in experience hands.

     

经皮肾镜取石术治疗鹿角形肾结石通道建立技巧的探讨

目的：探讨经皮肾镜取石术（PCNL）治疗鹿角形肾结石术中穿刺点、穿刺径路的合理选择及扩张、通道建立的技巧。方法：总结在X线定位下PCNL治疗36例鹿角形肾结石患者的经皮肾通道建立与治疗效果。结果：Ⅰ期手术穿刺、通道建立、成功碎石率100％;Ⅰ～Ⅲ期结石完全清除率83．33％;单通道26例（72．22％）,双通道7例（19．44％）,三通道3例（8．33％）;无大出血、感染休克等严重并发症发生。结论：PCNL治疗鹿角形肾结石的第一个穿刺点首选中后组盏,径路应与目标盏长径相吻合;带鞘扩张时扩张器应进入集合系统内约2cm,退出扩张器直接完成通道建立;Ⅰ期建立单通道处理。肾盂、中组肾盏结石为主,Ⅱ期先经Ⅰ期通道处理上下盏残留结石,慎重建立第二、三条经皮肾通道。     

Supracostal access for percutaneous nephrolithotomy: less morbid,more effective

Objectives The aim of this research was to study the success and morbidity of supracostal access for percutaneous nephrolithotomy (PCNL), as it is often avoided for fear of complications. Materials and methods Between July 2000 and May 2007, 565 patients underwent PCNL, of whom 110 had a supracostal access. All procedures were performed in a single sitting under general anesthesia. Data were analyzed prospectively for indications, stone clearance rates, and preoperative and postoperative complications. Results Indications for supracostal access included large pelvic stones in 39 patients, partial or complete staghorn stones in 32, calyceal stones with major stone bulk above the level of 12th rib in 35, and upper ureteric stones in four. Patients’ ages ranged between 13 and 71 years (mean 44.2 years). Fifty-six cases were left sided and 54 right sided, whereas 103 (93.6%) were radiopaque stones. All tracts were in the 11th intercostal space, though one had an additional tract in the tenth space. Single-tract access was used in 101 cases (91.8%), but nine (8.2%) required a second tract. Overall stone clearance rate with PCNL monotherapy was 86.4%, and this increased to 97.3% with secondary procedures. Overall complication rate was 11.8% and included hydrothorax/hemothorax in ten, perinephric collection in one, infection/sepsis in two, and excessive bleeding in two. Postoperative hospital stay ranged from 2 to 15 days. Conclusions The supracostal approach gives high stone clearance rates with acceptable morbidity rates and should be attempted in selected cases. Complications when present may be managed easily with conservative measures.     

ESWL与输尿管镜碎石联合处理上尿路结石

目的：探讨对部分上尿路结石采用ESWI．与输尿管镜碎石联合处理的方法。方法：对70例上尿路结石患者采用ESWI。与输尿管镜下钬激光碎石（URS）联合交替治疗。其中输尿管结石48例,。肾结石22例。结果：结石总排净率为91．4％00（64／70）,其中输尿管结石排净率为95．8％（46／48）,肾结石排净率为81．8％（18／22）。3例治疗失败,其中1例输尿管结石因输尿管狭窄无法入镜;另2例肾结石,1例因交替治疗次数过多中途停止治疗,1例因结石硬度过大ESWI,不佳,均改为PCNL术。结论：ESW[。与URS联合交替进行的疗法处理上尿路结石,避免了创伤性治疗,扩大了ESWI,治疗范围,降低了URS手术难度,缩短了URS操作时间,提高了结石排净率,患者创伤微小、恢复快、并发症少,是治疗上尿路结石,特别是部分复杂性上尿路结石较理想的方法之一。     

Treatment for residual stones using flexible ureteroscopy and holmium laser lithotripsy after the management of complex calculi with single-tract percutaneous nephrolithotomy

This study validated the effectiveness and safety of the treatment for residual stones using flexible ureteroscopy (fURS) and holmium laser (0.6–1.2 J, 20–30 Hz) lithotripsy via a fiber with a 200-μm core diameter and 0.22 numerical aperture (NA) after the management of complex calculi with single-tract percutaneous nephrolithotomy (PCNL). Between January 2014 and June 2016, 27 consecutive patients with complex calculi underwent fURS and holmium laser lithotripsy after a planned single-tract PCNL. Among the 27 patients with complex calculi, 9 had full staghorn calculi, 7 had partial staghorn calculi, and 11 had multiple calculi. After the first single-tract PCNL session, the mean stone size and mean stone surface area were 18.0?±?10.7 mm and 181.9?±?172.2 mm², respectively. Treatment for residual stones with fURS and holmium laser lithotripsy was successfully completed and was performed without intraoperative complications. The mean operative time of the fURS procedure was 69.1?±?23.6 min, and the mean hospital stay was 5.3?±?2.4 days. The mean decrease in the hemoglobin level was 7.3?±?6.5 g/l. After the fURS procedure, the overall stone-free rate was 88.9%. The overall postoperative complication rate was 14.8% (Clavien grade I 11.1%; Clavien grade II 3.7%). The current approach tested here combines the advantages of both PCNL and fURS and effectively manages complex calculi with a high stone-free rate (SFR) (88.9%). This approach also reduced the number of treatment sessions, the number of percutaneous access tracts, and the blood loss and potential morbidity associated with multiple tracts.     

Tubeless percutaneous nephrolithotomy: 5 years of experience in 201 patients

BACKGROUND AND PURPOSE: Our aim was to evaluate the safety, effectiveness, and feasibility of tubeless percutaneous nephrolithotomy (PCNL). PATIENTS AND METHODS: From June 2000 to September 2005, 201 patients with renal stones >2 cm underwent tubeless PCNL by a single surgeon. We report details of the outcomes. RESULTS: The complete stone clearance rate was 91.04% (183 patients). After surgery, 18 patients (8.96%) had stones (mean size = 7 mm) detected on a plain abdominal radiograph or ultrasonographic examination and were referred for shockwave lithotripsy. The mean stone size was 30 mm (range 20-40 mm). The mean operative time was 35 minutes (range 30-60 min), and the mean hospital stay was 3.5 days (range 2-5 days). Postoperative ultrasonography did not reveal considerable fluid collection. There were no visceral injuries. Twenty-two (10.9%) patients received a transfusion, and 16 (7.9%) patients had urinary tract infection. CONCLUSION: In our experience, tubeless PCNL is safe, effective, and feasible without any discomfort for patients.     

Percutaneous nephrolithotomy in children before school age: experience of a Pakistani centre

OBJECTIVE: To review our experience of percutaneous nephrolithotomy (PCNL) in children before school age, and determine its efficacy and safety in this age group. PATIENTS AND METHODS: The records of children aged < or = 5 years undergoing PCNL were reviewed. Variables assessed included stone number, size, location and type. The PCNL puncture site and number were also recorded. We reviewed stone clearance with PCNL, ancillary procedures used, complication rates and follow-up status of the children. RESULTS: There were 30 renal units in 29 children (median age 3.8 years, range 1.4-5). Because of poor growth the mean (SD) body weight of the children was only 12.2 (2.8) kg, which is near the 50th percentile for children of mean age 3.5 years. The median (range) stone burden was 2.35 (1.3-6) cm; 60% of the patients had single stones while 28% had more than five. There were five staghorn stones. All PCNL was primary and with one puncture, using a 17 F angled nephroscope; stones were fragmented using a pneumatic lithoclast. After PCNL stones were completely cleared in 60% of the renal units, which increased to 100% after combining it with extracorporeal shockwave lithotripsy. The median (range) follow-up was 24.9 (4-51) months; the overall complication rate was 6%. In the long follow-up hypertension was not detected in any child and isotopic renograms in 17 kidneys detected no new scarring or loss of renal function. CONCLUSION: PCNL is a safe and effective for treating renal stones in very young children.     

复杂肾结石经皮肾镜取石术后结石残留的原因与处理

目的:探讨复杂肾结石PCNL术后结石残留的原因及处理方法.方法:回顾分析我院行二期PCNL取石的35例复杂肾结石患者的临床资料,既往有开放手术史17例,2例因术中出血影响视野改二期手术,合并肾盏憩室内结石2例.结果:除2例需辅助ESWL治疗外,其余33例在B超和输尿管镜辅助下,行二期PCNL全部成功取净残留结石.其中3例因残留结石所在肾盏位置远离经皮肾通道或在与皮肾通道平行的肾盏内,重新建立另一通道取石;1例行3通道取石.结论:术中出血、肾盏憩室内结石、既往开放手术史和肾内集合系统解剖异常,是PCNL术后结石残留的主要原因;术中B超及软镜的应用,可以清楚显示有无残留结石及其所在肾盏的位置;了解结石与经皮肾通道的位置关系,帮助引导最大限度地清除结石.     

Clinical experience of extracorporeal shock wave lithotripsy for cystine calculi

Thirty patients (16 men and 14 women) with cystine urinary stones were treated by extracorporeal shock wave lithotripsy (Dormer HM-3) from December 1984 through October 1989. The average patient age was 35.2 years with a range of 14 to 59 years. Seventy per cent of these subjects had had previous open surgical operations for stones. The cases consisted of 7 ureteral stones and 37 renal stones, including 15 staghorn calculi. An average of 1.3 session of ESWL was carried out to treat ureteral stones. Thirty-seven renal units with renal stone required 96 sessions of lithotripsy (average 2.6 sessions per unit). Seven patients with ureteral stones required auxiliary procedures, i.e., one transurethral lithotripsy (TUL), two percutaneous nephrostomies (PNS) and one open surgery. Thirty-seven renal stones, including staghorn calculi was treated by ESWL and auxiliary treatment of 21 TUL procedures, one PNS, 16 PNL procedures and one chemical chemolysis. Successful fragmentation (residual debris less than or equal to 4 mm) was achieved in 85.7% of ureteral stones, 90.9% of renal stones and 73.3% of staghorn calculi. The stone free rates of patients with ureteral stones, renal stones and staghorn calculi were 71.4%, 50.0% and 53.5%, respectively, at 3 months after ESWL. No serious complications were seen in this series. Fever above 38.5 degrees C was the most common complications (13.5%). Ureteral perforation was encountered once in TUL procedures. Transfusion and selective arterial embolization were needed for one case treated by PNL procedures. Although cystine stone is harder to be fragmented by ESWL than other stone composition, ESWL and endourology may be effective and safe procedures for cystine stone patients.(ABSTRACT TRUNCATED AT 250 WORDS)     

无管化标准通道经皮肾镜取石术治疗上尿路结石67例

目的探讨无管化标准通道经皮肾镜取石术在治疗上尿路结石方面的疗效及安全性。方法回顾性分析2008年1月至2013年7月采用无管化标准通道经皮肾镜取石术治疗67例上尿路结石患者的临床资料。其中单发肾结石24例,多发肾结石13例,不完全性鹿角形结石8例,连接部及输尿管上段结石22例,结石最大直径0．9～3．0cm。我们对于非复杂型上尿路结石,肾皮质厚度≥1cm、无严重尿路感染、无活动性出血、无集合系统穿透性损伤及满意的清石病例,术后仅留置双J管而不放置肾造瘘管。结果所有患者均一期手术成功。平均手术时间36．7±2．3min;术后第l天疼痛评分为2．9±1．5mm,术后平均住院时间（4．1±0．8）d;术前、后平均血红蛋白下降值为（1．0±0．5）μ/L;结石清除率100％。无输血病例及选择性肾动脉栓塞病例;无感染性休克和肾周积液发生。结论在经过严格筛选病例基础上,无管化标准通道经皮肾镜取石术治疗上尿路结石是安全可行的。     

Pediatric urolithiasis: 15 years of local experience with minimally invasive endourological management of pediatric calculi

PURPOSE: We sought to identify whether changes in technology and local practice have improved outcomes in the minimally invasive management of pediatric stone disease. MATERIALS AND METHODS: We reviewed retrospectively case notes and imaging from 1988 to 2003, noting treatment modality, stone-free rates, ancillary therapy and complications. RESULTS: A total of 122 children (140 renal units) with a mean age of 7.7 years underwent 209 extracorporeal shock wave lithotripsy (SWL) sessions. Stone size ranged from 6 to 110 mm. Stone-free rates were 84% for cases involving stones smaller than 20 mm, and 54% for those involving stones 20 mm or greater. For complex calculi 40% of patients were stone-free and 45% required ancillary procedures, with an overall complication rate of 26%. A total of 37 children (43 renal units) with a mean age of 6.4 years underwent 46 percutaneous nephrolithotomies (PCNLs). Stone size ranged from 8 to 155 mm. The overall stone-free rate was 79%. Of these patients 34% required ancillary procedures, with a major complication rate of 6%. A total of 35 children (35 renal units) with a mean age of 5.9 years underwent 53 ureteroscopies. Holmium laser was the most effective treatment modality in this group, with a 100% stone-free rate and no complications. CONCLUSIONS: For most renal stones smaller than 20 mm SWL was the most effective primary treatment modality. There was no statistical difference between the 2 lithotriptors for stone-free or ancillary procedure rate. The stone-free rate was dependent on stone size rather than type of lithotriptor. For renal stones 20 mm or greater and staghorn calculi we switched from SWL to PCNL as primary treatment, as stone-free rates were higher and the ancillary procedure and re-treatment rates were lower with PCNL. Electrohydraulic lithotripsy and pulse dye laser were initially used to treat ureteral stones. However, with the introduction of holmium laser technology we achieved higher stone-free rates and lower complication rates. Holmium laser lithotripsy is now used as a primary treatment modality for ureteral stones.     

腔内泌尿外科工作站在上尿路结石中的综合应用

目的:探讨多尼尔腔内泌尿外科工作站在上尿路结石一站式微创治疗的功效。方法:总结262例上尿路结石患者经输尿管镜钬激光碎石术、微造瘘经皮肾镜钬激光碎石术、ESWL的临床资料。结果:239例患者一次碎石成功(91.2%)。结石排净253例(96.5%)。结论:在多尼尔腔内泌尿外科工作站内采用ESWL联合腔内碎石技术的一站式综合治疗,处理上尿路结石具有创伤小、效果好、方便、快捷的优势,值得临床推广应用。     

Comparison of pneumatic and Holmium laser ureteroscopic lithotripsy for upper third ureteral stones

ObjectiveTo evaluate the outcomes of ureteroscopic lithotripsy with pneumatic lithotripter and Holium:Yttrium-Aluminum-Garnet (Ho:YAG) laser in the management of upper third ureteral stones.Materials and methodsPatients who underwent ureteroscopic lithotripsy with pneumatic lithotripter or Ho:YAG laser for upper third ureteral stones were retrospectively reviewed. Patients with urinary tract infection, radiolucent stones, loss of follow-up, concurrent middle or lower third ureteral stones or acute renal failure were excluded. Patient age, stone size and burden (based on KUB or computerized tomography), stone upward migration, double J stent insertion rate, stone free rate and secondary intervention rate for residual stones were compared in both groups.ResultsThere were 158 patients with 178 upper third ureteral stones (135 in pneumatic lithotripsy group and 43 in Ho:YAG laser lithotripsy group) meeting the study criteria. Patients' age, gender, stone laterality, stone size and burden were similar in both groups. The Ho:YAG laser lithotripsy group had better stone free rate, less double J stent insertion rate and less secondary intervention rate as compared with pneumatic lithotripsy (53.4% vs. 40.1%; 72.1% vs. 91.9%; 25% vs. 48.5% respectively, all p < 0.05). In patients with stones larger than 10 mm, Ho:YAG laser lithotripsy had significantly lower upward migration rate, lower double J stent insertion rate, higher stone free rate and less secondary intervention rate.ConclusionsHo:YAG laser lithotripsy is superior to pneumatic lithotripsy in the management of upper third ureteral stones in terms of double J stent insertion rate, stone free rate and secondary intervention rate for stones of all sizes. For stones larger than 10 mm, laser lithotripsy results in less stone upward migration.