以结石成分分析为基础的个体化指导方案在结石术后患者中的应用价值研究

目的探讨以结石成分分析为基础的个体化指导方案在结石术后患者中的应用价值。方法选取2016年1月至2017年1月在本院收治300例经内镜手术治疗的尿路结石患者为研究对象(观察组),所有患者均采取红外光谱自动分析法对尿结石标本进行化学成分分析,并以结石成分分析为基础给予个体化预防指导方案;另选取同期本院未进行结石成分分析的40例尿路结石患者为对照组,对比两组术后结石复发率。结果尿路结石标本中多为混合成分结石,2种成分混合结石占比38.67%,3种成分混合结石占比34.00%,单一成分结石占比27.33%。单一成分结石、混合成分结石及不同结石发生部位(上、下尿路结石)中,草酸钙结石均占比最高,其次为尿酸结石。术后3个月,两组结石复发率比较差异无统计学意义(P>0.05);术后半年、1年,观察组结石复发率低于对照组,差异有统计学意义(P<0.05)。结论红外光谱可简便、快速获取结石成分信息,结石成分复杂,多为草酸钙类结石与尿酸结石,结石成分分析是提出个体化预防指导方案的基础,可有效降低术后结石复发率。     

压电晶体碎石机治疗不同部位输尿管结石疗效分析

目的：评价压电晶体碎石机治疗不同部位输尿管结石的效果分析。方法：对1989～2010年ESWL治疗的泌尿系结石49172例,其中输尿管结石37629例（右输尿管上段结石7716例,右输尿管中段结石4178例,右输尿管下段结石7111例,左输尿管上段结石9142例,左输尿管中段结石1712例,左输尿管下段结石7770例）进行回顾性分析,碎石后2周行超声及腹部x线平片检查及临床随访。结果：右输尿管上段结石一次排净率为72．71％,右输尿管中段结石一次排净率为73．21％,右输尿管下段结石一次排净率为80．91％,左输尿管上段结石一次排净率为74．17％,左输尿管中段结石一次排净率为73．89％,左输尿管下段结石一次排净率为82．48％。结论：单纯B超定位ESWL是一种治疗输尿管结石的理想方法,排石率高,不受阴性结石影响,具有操作简便、安全、痛苦少、无x线伤害、效果满意、并发症少等优点,是输尿管结石的首选治疗方法。     

Ureteroscopic stone manipulation in the upper third of ureter and the pelvicaliceal system

During the period of January 1984 to March 1987, a total of 15 patients with upper third ureteric calculi and 115 patients with renal calculi were treated by percutaneous nephrolithotomy (PCNL), transurethral ureteroscopy (TUU) or open surgery. In all patients, endoscopic techniques were the primary modalities of therapy. In 15 patients with upper third ureteric calculi and in 22 patients with 27 calculi in the pelvicaliceal system (five had bilateral calculi), TUU was carried out. The success rate was 67% for calculi in the upper third of ureter and 44% for calculi in the pelvicaliceal system. No persistent strictures or other serious complications were encountered. We conclude, that TUU, in experienced hands, could be considered for proximal ureteric calculi and for certain renal calculi, especially in poor risk patients and patients with only one kidney.     

Role of uric acid in different types of calcium oxalate renal calculi

AIM: The presence of uric acid in the beginning zone of different types of 'pure' calcium oxalate renal calculi was evaluated with the aim of establishing the degree of participation of uric acid crystals in the formation of such calculi. METHODS: The core or fragment of different types of 'pure' calcium oxalate renal calculi was detached, pulverized and uric acid extracted. Uric acid was determined using a high-performance liquid chromatography/mass spectrometry method. RESULTS: In calcium oxalate monohydrate (COM) papillary calculi with a core constituted by COM crystals and organic matter, 0.030+/-0.007% uric acid was found in the core. In COM papillary calculi with a core constituted by hydroxyapatite, 0.031+/-0.008% uric acid was found in the core. In COM unattached calculi (formed in renal cavities) with the core mainly formed by COM crystals and organic matter, 0.24+/-0.09% uric acid was found in the core. In COM unattached calculi with the core formed by uric acid identifiable by scanning electron microscopy (SEM) coupled to X-ray microanalysis, 20.8+/-7.8% uric acid was found in the core. In calcium oxalate dihydrate (COD) unattached calculi containing little amounts of organic matter, 0.012+/-0.004% uric acid was found. In COD unattached calculi containing little amounts of organic matter and hydroxyapatite, 0.0030+/-0.0004% of uric acid was found. CONCLUSIONS: From these results it can be deduced that uric acid can play an important role as inducer (heterogeneous nucleant) of COM unattached calculi with the core formed by uric acid identifiable by SEM coupled to X-ray microanalysis (these calculi constitute the 1.2% of all calculi) and in COM unattached calculi with the core mainly formed by COM crystals and organic matter (these calculi constitute the 10.8% of all calculi).     

输尿管上段结石经输尿管镜碎石失败66例再治疗经验

目的总结输尿管上段结石输尿管镜下碎石失败者再治疗经验。方法2004年2月-2006年9月，66例输尿管镜下碎石治疗输尿管上段结石失败患者，包括因结石下段输尿管扭曲，结石下方输尿管炎性狭窄、肉芽组织形成或包裹结石致输尿管镜下未见结石40例，碎石时结石漂人肾盂26例，改行微创经皮肾镜取石术（M—PCNL）或体外冲击波碎石（ESWL）。结果48例直接改行M—PCNL，均一次将结石完全取净；18例留置双J管1周后行1—4次ESWL后联合药物排石，1个月后拔除双J管，复查KUB、B超，14例结石完全排净，4例结石未击碎排净改行M—PCNL，均一次将残余结石完全取净。术中、术后未出现严重并发症。结论M—PCNL取石损伤小，结石清除率高，是输尿管镜下输尿管上段结石碎石失败的有效微创治疗方法。     

延安地区泌尿系结石成分分析的研究

目的利用红外光谱法测定延安大学附属医院泌尿外科手术获得的泌尿系结石成分,探讨延安地区泌尿系结石成分与年龄、性别等关系,比较上、下尿路结石成分特点,分析延安地区泌尿系结石发生的流行病学情况,为临床制定有效的个体化治疗及预防措施提供参考依据。方法收集2013年1月至2017年1月在延安大学附属医院泌尿外科治疗1984例尿路结石患者的年龄、性别、结石部位等临床资料,对比分析延安地区泌尿系结石在不同年龄、不同性别、不同解剖部位的分布特点。结果在1984例泌尿系结石的患者中,按每10岁年龄大小分组排序,统计各年龄阶段泌尿系结石发病情况,男性患者有1346例,女性患者有638例,男性年龄(50.23±14.48)岁,女性年龄(47.87±14.51)岁,男、女患者比例约2.11∶1。在66~75岁年龄段,尿路结石发病率性别差异具有统计学意义(P<0.05)。结石成分以混合性结石为主,以混合性结石为主,共1582例,占79.76%。其中1665例(83.92%)为上尿路结石,上、下尿路结石的比例为5.22∶1,其余为肾结石合并膀胱结石。上尿路结石中男性1062例,女性603例,男女比例为1.76∶1;下尿路结石中男性284例,女性35例,男女比例为8.11∶1。青壮年(年龄≤45岁)泌尿系结石患者草酸钙为主结石、感染性结石多见;中老年(年龄>45岁)泌尿系结石者草酸钙为主结石、尿酸类结石多见。感染性结石患者性别差异具有统计学意义(P<0.05)。结论在延安地区男性较女性更容易患泌尿系结石。同时,不同年龄段结石构成成分具有差异。对于年龄≤45岁患者,主要以草酸钙为主结石、感染性结石多见,这与结石整体发病率基本一致;而对于年龄>45岁患者,主要以草酸钙为主结石、尿酸性结石多见。表明对于不同年龄段的结石患者,可以根据上述结果在结石的预防和治疗上综合考量,给予明确而更加合理的治疗。     

纤维胆道镜在上尿路结石手术中的应用

目的:探讨纤维胆道镜在上尿路结石手术中的应用价值。方法:为31例复杂上尿路结石(多发肾结石、输尿管多发结石、输尿管结石并肾结石)患者施行手术,5例输尿管切开取石术中结石移位时应用纤维胆道镜协助取石。结果:35例取石成功,1例多发肾结石患者有2颗结石残留于肾盏内,术后2个月体外冲击波碎石术(extracorporeal shock wave lithotripsy,ESWL)治疗后排出,2例输尿管粘膜和1例肾盂粘膜损伤出血。结论:纤维胆道镜用于上尿路结石手术,尤其是复杂性上尿路结石手术,有助于取尽结石,对患者损伤小,是一种安全有效的方法,值得临床推广应用。     

钬激光治疗泌尿系结石

目的 探讨输尿管镜钬激光治疗输尿管结石的有效性和安全性。方法采用输尿管镜钬激光技术治疗168例输尿管结石,其中输尿管上段结石27例,中段结石33例,下段结石108例;经尿道膀胱镜钬激光技术治疗膀胱结石12例。术后4～6周复查计算各自结石排净率(排净例数／例数)。结果输尿管上、中、下段结石的排净率分别为93％(25／27)、94％(31／33)、94％(102／108),并发症为5％(8／168);而膀胱结石的排净率为100％,无并发症。结论输尿管镜钬激光是治疗输尿管结石的有效、安全方法。     

Management of complex biliary tract calculi with a holmium laser

The difficulty in managing complex biliary tract calculi is exemplified in patients with primary intrahepatic calculi. Standard surgical and endoscopic approaches often fail to clear calculi in these patients who have recurrent episodes of cholangitis. The success of the holmium laser for urologic calculi led us to adapt treatment strategies for primary and secondary biliary tract calculi where standard treatments had been unsuccessful. Our goals were to remove all calculi, prevent recurrent sepsis, and preserve hepatic parenchyma. Thirty-six patients with complex biliary calculi were treated. After sepsis was controlled and the extent of calculi was evaluated, appropriate access to and drainage of the biliary tract was achieved. Holmium laser lithotripsy was performed under video guidance using flexible choledochoscopes and a 200 μ laser fiber generating 0.6 to 1.0 joules at frequencies of 6 to 10 Hz. Lithotripsy procedures were repeated until cholangiography and cholangioscopy confirmed the clearance of calculi. Twenty-two patients of Asian descent with primary intrahepatic calculi and 14 patients with secondary intrahepatic calculi were treated. Access to the biliary tract could be accomplished through percutaneous catheter tracts, T-tube tracts, or the cystic duct during laparoscopic cholecystectomy. Biliary drainage was by biliary enteric anastomosis or endoscopic sphincterotomy. Complete stone clearance required an average of 3.9 procedures (range 1 to 15) for patients with primary intrahepatic calculi and 2.6 procedures (range 1 to 10) for patients with secondary intrahepatic calculi regardless of stone composition. No patient required hepatic resection and no complications or deaths were attributed to the holmium laser. Clearance of calculi can reliably and safely be achieved with a holmium laser regardless of stone composition or location while preserving hepatic parenchyma and preventing recurrent sepsis. Presented at the Fourth Americas Hepato-Pancreato-Biliary Association Congress, Miami Beach, Florida, February 27-March 2, 2003.     

Radiopacity of the cystine calculi on KUB]

To study the radiopacity of cystine calculi. We have compared them with oxalate and/or phosphate calculi on plain X-ray films (KUB). Eleven pure cystine calculi from 5 people in 4 families, and 8 oxalate and/or phosphate calculi as controls were obtained from patients by lithotomy or spontaneous discharge in Dokkyo University School of Medicine and affiliated hospitals, since 1978. The radiopacity of cystine calculi was measured by a densitometer PDA-60 (Konika Co.), comparing the density of the calculus with that of the area surrounding the calculus on KUB. All cystine calculi were easily recognized on KUB, and their densities were fairly identical with those of oxalate and/or phosphate calculi.     

Unenhanced computerized axial tomography to detect retained calculi after percutaneous ultrasonic lithotripsy.

PURPOSE: We report our experience with unenhanced computerized axial tomography (CT) after percutaneous ultrasonic lithotripsy in patients thought to be at high risk for retained calculi. MATERIALS AND METHODS: CT was obtained in 121 patients (124 kidneys) within 12 to 36 hours of percutaneous ultrasonic lithotripsy for staghorn or large nonstaghorn renal calculi. Cases were grouped according to the CT findings as no retained calculi, insignificant retained calculi (fragments 1 to 3 mm.), retained calculi amenable to shock wave lithotripsy and retained fragments requiring second look percutaneous ultrasonic lithotripsy or flexible nephroscopy. RESULTS: No calculi were seen in 73 kidneys (59%) and retained calculi were identified in 51 (41%). Shock wave lithotripsy was used to treat 8 patients and another percutaneous ultrasonic lithotripsy or flexible nephroscopy was performed in 23 to remove retained stones. Insignificant calculi were noted in the remaining 21 patients. CONCLUSIONS: We believe that postoperative unenhanced CT is superior to plain renal tomography and is the best method to determine if a patient is stone-free after percutaneous ultrasonic lithotripsy. It helps to locate precisely those stones requiring a second percutaneous ultrasonic lithotripsy or nephroscopic extraction. An unenhanced renal CT devoid of calculi obviates routine postoperative second look flexible nephroscopy. We encourage others to consider this technique to define more accurately kidney stone status after percutaneous ultrasonic lithotripsy for large staghorn calculi or in any patient at high risk for retained calculi after percutaneous ultrasonic lithotripsy.     

A modified algorithm for the management of ureteral calculi: 100 consecutive cases

We treated 100 consecutive ureteral calculi requiring intervention with a previously described algorithm. There were 16 ureteropelvic junction, and 18 upper, 22 mid and 44 lower ureteral calculi. Treatment was by a stent and extracorporeal shock wave lithotripsy in 10 ureteropelvic junction, 10 upper ureteral and 3 mid ureteral calculi, ureteroscopy and extracorporeal shock wave lithotripsy in 6 upper and 6 mid ureteral calculi, and ureteroscopy alone in 5 ureteropelvic junction, 2 upper and 12 mid ureteral calculi. All 44 lower ureteral calculi were treated successfully by ureteroscopy. Of the 100 patients studied 98 were treated by endourological methods (extracorporeal shock wave lithotripsy or ureteroscopy), while 2 required an operation (1 with a ureteropelvic junction calculus and 1 with a mid ureteral calculus). Over-all, 100 patients required a total of 125 procedures to accomplish successful stone removal. An algorithm is developed in which lower ureteral calculi are treated by ureteroscopy, mid ureteral calculi (large and dense) by stent bypass and extracorporeal shock wave lithotripsy or (lucent and fragile) by ureteroscopy, upper ureteral calculi by stent bypass and extracorporeal shock wave lithotripsy without manipulation, and impacted ureteral stones initially by ureteroscopy and, if necessary, then by extracorporeal shock wave lithotripsy.     

Bilirubin calculi crushing by laser irradiation at a molecular oscillating region wavelength based on infrared absorption spectrum analysis using a free-electron laser: an experimental study

We investigated a new laser technique of crushing bilirubin calculi, our aim being to crush calculi in isolation using a minimally invasive procedure. Infrared absorption spectrum analysis of the bilirubin calculi was conducted, revealing maximum absorption spectrum at a wavelength of the C=O stretching vibration of ester binding that exists within the molecular structure of bilirubin calcium. As an experiment to crush calculi using the free-electron laser, we set the laser at the effective irradiation wavelength of ester binding, and conducted noncontact irradiation of the bilirubin calculi. The calculi began to slowly ablate until the irradiated site had been completely obliterated after 20 s of irradiation. Moreover, absorption spectrum analysis of the irradiated site, from a comparison of absorption peak ratios, revealed that absorption peak intensities decreased over time at the absorption wavelength of ester binding. These findings suggest that irradiation of molecular oscillating region wavelengths peculiar to calculi based on infrared absorption spectrum analysis results in the gradual crushing of calculi in isolation by breaking down their molecular structure. Received: December 7, 1999 / Accepted: November 20, 2000     

Hydronephrosis caused spontaneous evacuation of many small calculi in a caliceal diverticulum: a case report

We experienced a curious case that hydronephrosis had caused spontaneous evacuation of calculi in a caliceal diverticulum. A 50-year-old woman was visited to our department complaining of right lower abdominal pain. Several right ureteral stones, right hydronephrosis and a great numbers of small round-shaped calculi in a right caliceal diverticulum were diagnosed. Many of the calculi moved from the diverticulum to ureter, and were evacuated spontaneously. The month after, the right hydronephrosis had already subsided and almost all of the calculi had disappeared. It was supposed that a hydronephrosis had widened the narrow channel between the diverticulum and the calyx and enabled the small calculi to pass through. Recent reports show that effectiveness of ESWL for symptomatic caliceal diverticular calculi is doubtful, because the narrow channel hinders the passage of stone fragments. However, this case suggests that an artificial hydronephrosis created by retrograde occlusion ureteral balloon catheter may lead to good drainage of gravel and better stone-free rate of caliceal diverticular calculi treated by ESWL.     

输尿管镜钬激光治疗输尿管结石53例

目的：探讨输尿管镜钬激光治疗输尿管结石的有效性和安全性。方法：采用输尿管镜钬激光技术治疗53例(56侧)输尿管结石，其中输尿管上段结石9侧，中段结石11侧，下段结石36侧。结果：输尿管上、中、下段结石的排净率分别为89％、91％、92％，并发症为7％(4侧)。结论：输尿管镜钬激光是治疗输尿管结石的有效、安全的方法。     

B超引导超声联合弹道EMSⅢ代治疗复杂性肾结石(附180例报告)

目的:探讨B超引导下超声联合弹道EMSⅢ代治疗复杂性肾结石的方法及疗效。方法:回顾性分析2008年11月～2011年6月收治180例复杂性肾结石患者的临床资料,包括单发肾盂或肾盏结石25例,多发性结石135例,肾鹿角形或铸型结石20例;其中双肾结石35例,结石合并脓肾3例。B超引导下穿刺并扩张建立F24经皮肾镜操作通道,采用超声联合气压弹道碎石清石。结石合并脓肾患者先用超声吸附装置清理脓液和脓栓,并在低压下超声碎石后吸出脓液,再行碎石清石术。结果:所有病例均一次穿刺成功。8例鹿角形巨大结石行双通道取石,余均为单通道取石,全部一期完成手术。手术时间50～120min,平均70min。术中出血量50～300ml,平均120ml。结石一次性取净率91.1%(164/180),残留小结石16例,结石直径<0.7cm,术后1个月行ESWL治疗,结石完全排净。术中术后未发生严重并发症。结论:B超引导下经皮肾镜超声联合弹道碎石清石治疗复杂性肾结石安全、高效,是临床微创治疗复杂性肾结石的理想选择。     

Analysis of spontaneously passed urinary tract stones

Most studies on epidemiology, composition, and recurrence of renal calculi include both spontaneously passed calculi and those retrieved after surgical manipulation or shock wave lithotripsy. The present study exclusively focused on epidemiology, composition, and recurrence of spontaneously expelled stones in patients from North and East Mallorca (Spain) which represents a geographically specific non-urban region of a developed country. The study involved 136 patients who spontaneously passed 205 renal calculi. All calculi were classified and sub-classified according to composition after macroscopic and microscopic examination. We also analyzed prevalence, gender, age, and stone recurrence rate over a period of 3 years. The peak incidence of spontaneously stone passage is within the fourth to sixth decade. Overall male to female ratio was 3/1. Calcium oxalate was the most prevalent composition (64.8%) followed by uric acid (25.3%), mixed stones (5.3%) and calcium phosphate calculi (4.3%). Uric acid stones were the most recurrent (50%) followed by calcium oxalate monohydrate papillary calculi (26.4%), calcium oxalate monohydrate un-attached calculi (19.2%), calcium oxalate dihydrate calculi (18.3%), calcium phosphate calculi (14%), and mixed calculi (12.5%). In conclusion, spontaneously passed stones in Mallorcan population have similar epidemiology, composition, and recurrence rate from that found in other developed countries. Calcium oxalate stones are largely the most spontaneously passed type of calculi and uric acid stones are the most frequently recurred. These findings are also found to be similar to those reported in previous studies examining both spontaneously and non-spontaneously passed stones.     

Urinary calculi following traumatic spinal cord injury

OBJECTIVE: To investigate the time aspect of the development of renal and bladder calculi in individuals with traumatic spinal cord injury (SCI) and a possible relation between the development of calculi and the bladder-emptying method. MATERIAL AND METHODS: The study comprised a retrospective data collection from medical records and a questionnaire follow-up at least 10 years after the SCI. RESULTS: A total of 236 individuals with SCI (82% male, 18% female; 47% tetraplegic, 53% paraplegic) who were injured between 1956 and 1990 participated in the study and the response rate was 84.6%. The mean age at the time of follow-up was 50.5 years (range 28-84 years). The mean duration from the time of SCI was 24.1 years (range 10-45 years). During follow-up 47 participants (20%) had at least one episode of renal calculi and 32 (14%) had at least one episode of bladder calculi. The risk of first renal and bladder calculus was highest within the first 6 months post-injury. The cumulative proportion of calculi-free participants 45 years post-injury was 62% for renal calculi and 85% for bladder calculi. For participants who did not develop renal calculi within the first 2 years post-injury, the risk of having a renal calculus within the next 43 years was 34%. For bladder calculi the corresponding risk of having a bladder calculus within the next 43 years was 5%. No significant differences were found regarding the bladder-emptying method and either renal or bladder calculi, only a non-significant trend that more participants with bladder calculi used indwelling catheters. Participants with renal or bladder calculi were not statistically significantly different from the remainder of the study group regarding gender, para- or tetraplegia or Frankel classification. CONCLUSIONS: The risk of developing renal and bladder calculi was higher in the SCI population compared to the normal population. Bladder calculi primarily occur early post-injury and renal calculi appear both early post-injury and years later. Therefore, it is important to follow individuals with SCI regularly by means of urological investigations from the time of the injury until death.     

Extracorporeal shock-wave lithotripsy with Lithostar lithotriptor.

Initial experience of extracorporeal shock-wave lithotripsy (ESWL) using the Lithostar lithotriptor is reported; 193 patients underwent 248 treatments for 210 stones. A total of 139 renal calculi (126 patients) and 71 ureteral stones (67 patients) were analyzed. Treatments were performed without anesthesia in 65 calculi (27.6%), with intravenous sedation in 91 (42.5%), and under epidural anesthesia in 34 calculi (29.9%). A three-month follow-up showed a success rate of 88.0 percent for renal calculi and 95.5 percent for ureteral calculi treated in situ. Renal stone fragmentation was achieved with a mean of 4,890 shocks at 17.4 kV and ureteral calculi were fragmented with a mean number of 4,798 shocks at a mean of 18.3 kV. Auxiliary procedures after ESWL were required in 2 patients with renal stones and in 1 with ureteral calculi. A comparison between stone size and number of shock waves required to achieve stone fragmentation revealed a linear relationship. Hospitalization was not necessary in 84.4 percent of renal calculi and 89.6 percent of ureteral calculi. Retreatments were necessary in 22 (15.8%) of the renal calculi (18 had 2 sessions, 3 had 3 sessions, and 1 had 4 sessions). Of the ureteral calculi, 8 (11.3%) underwent retreatment (6 had 2 sessions, 1 had 3 sessions, and 1 had 4 sessions). The low morbidity with a large number of patients treated on an outpatient basis, minimizing the need for anesthesia, demonstrated a favorable initial successful experience with the Lithostar.     

输尿管软镜钬激光碎石术治疗婴幼儿上尿路结石

目的探讨输尿管软镜联合钬激光治疗婴幼儿（<2岁）上尿路结石的可行性与有效性。 方法回顾性分析我科自2016年1月至2018年2月应用输尿管软镜治疗婴幼儿上尿路结石62例（77侧）。其中男37例,女25例,均为维吾尔族,年龄8～24个月,单侧上尿路结石47例,双侧上尿路结石15例。输尿管上段结石19侧,肾盂结石31侧,肾上盏结石18侧,下盏结石9侧,结石最大径8～25 mm。所有患儿均Ⅰ期置入双J管被动扩张输尿管2周,Ⅱ期采用导丝引导下直接置入输尿管软镜,配合200 μm钬激光光纤碎石,激光功率为20～30 W,术后留置双J管2～3周。 结果62例均入镜成功,51例行一次碎石手术（双侧上尿路结石6例）,9例双侧上尿路结石行两次碎石手术,2例下盏结石未能寻及继续观察。术后住院3～5 d,术后8周复查67侧结石排尽,结石清除率87.0%（67/77）,平均手术时间为35 min（20～55 min）。 结论输尿管软镜联合钬激光碎石治疗婴幼儿上尿路结石,有较高的清石率和临床安全性。