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ABSTRACT Purpose: We aimed to perform a systematic review to assess perioperative outcomes, complications, and survival in studies comparing ureteral stent and percutaneous nephrostomy in malignant ureteral obstruction. Materials and Methods: This review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses framework. Meta-analyses were performed on procedural data; outcomes; complications (device-related, accidental dislodgement, febrile episodes, unplanned device replacement), dislodgment, and overall survival. Continuous variables were pooled using the inverse variance of the mean difference (MD) with a fixed effect, and 95% confidence interval (CI). The incidences of complications were pooled using the Cochran-Mantel-Haenszel method with the random effect model and reported as Odds Ratio (OR), and 95% CI. Statistical significance was set two-tail p-value <0.05 Results: Ten studies were included. Procedure time (MD −10.26 minutes 95%CI −12.40-8.02, p<0.00001), hospital stay (MD −1.30 days 95%CI −1.69 − −0.92, p<0.0001), number of accidental tube dislodgments (OR 0.25 95% CI 0.13 - 0.48, p<0.0001) were significantly lower in the stent group. No difference was found in mean fluoroscopy time, decrease in creatinine level post procedure, overall number of complications, interval time between the change of tubes, number of febrile episodes after diversion, unplanned device substitution, and overall survival. Conclusion: Our meta-analysis favors stents as the preferred choice as these are easier to maintain and ureteral stent placement should be recommended whenever feasible. If the malignant obstruction precludes a stent placement, then PCN is a safe alternative.
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Objective:To evaluate the renal injury of ultrasound-guided percutaneous fascia dilatation with one-step and multi-step percutaneous renal dilatation on renal injury in pigs.Methods:20 experimental pigs were randomly divided into 16F group and 24F group, with 10 pigs in each group. Under the guidance of ultrasound, the left and right kidneys of each experimental pig in group 16F were expanded by percutaneous renal multi-step expansion and one-step expansion (multi-step dilation subgroup and one-step dilation subgroup respectively) with 16F expander, and the same operation was performed with 24F expander in 24F group. After the operation, the left and right kidneys were left with fistula tubes for 1 week. The duration of hematuria in the renal fistula tubes was observed and compared. One month later, the experimental pigs were killed and the kidneys were removed. The histopathology of each group was observed under the naked eye and microscope. The scar tissue around the nephrostomy channel was removed, and hematoxylin-eosin (HE) and Masson staining were performed respectively. The scar volume was measured by digital image analysis technology, and the percentage of the scar volume in the renal cortex volume was calculated.Results:There was no significant difference in gross hematuria duration between one-step dilation subgroup [(4.60±1.26)d] versus multi-step dilation subgroup [(4.70±1.17)d] of 16F group ( P>0.05); There was no significant difference in gross hematuria duration between one-step dilation subgroup [(5.40±1.25)d] versus multi-step dilation subgroup [(5.50±1.08)d] of the 24F group ( P>0.05). There was no significant difference in the gross and histological observation of pig kidney specimens in 16F group and 24F group. There was no significant difference in the scar volume of the fistula channel [(0.35±0.04)cm 3, (0.36±0.03)cm 3] and its percentage in the whole renal cortical volume [(0.41±0.05)%, (0.41±0.06)%] between one-step dilation subgroup versus multi-step dilation subgroup of 16F group (all P>0.05); there was no significant difference in the scar volume of the fistula channel [(0.48±0.02)cm 3, (0.49±0.04)cm 3] and its percentage in the whole renal cortical volume [(0.52±0.04)%, (0.53±0.07)%] between one-step dilation subgroup versus multi-step dilation subgroup of 24F group (all P>0.05). The scar volume and its percentage in the whole renal cortical volume of the one-step dilation subgroup and the multi-step dilation subgroup in the 24F group were higher than that of the 16F group, with statistically significant difference (all P<0.05). Conclusions:Both one-step and multi-step percutaneous renal dilatation have less damage to renal parenchyma. The multi-step dilatation has no obvious advantage over one-step dilatation in reducing renal parenchyma injury.
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This study reported three patients with inferior vena cava (IVC) injury during percutaneous nephrostomy or nephrostomy catheters exchange. After CT examination, the tube of one case with IVC injury during percutaneous nephrostomy was directly extracted under the supervision of CT. The tube of the other 2 cases with IVC injury during nephrostomy catheters exchange were gradually removed after CT examination. The three patients’ nephrostomy tubes were removed successfully after surgery, without secondary vena cava, renal vein injury, and secondary thrombosis, and then they were all safely reperformed with percutaneous nephrostomy.
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ABSTRACT Purpose: We aimed to compare the success and complication rates of the anterograde and retrograde Ureterorenoscopy (URS) for impacted upper ureteral stones in patients > 65 years of age. Materials and Methods: Data of 146 patients >65 years of age and underwent anterograde URS (n=68) in supine position or retrograde URS (n=78) for upper ureteral impacted stones>10 mm between January 2014 and September 2018 were collected prospectively. The groups were compared for success and complication rates, duration of operation, hospital stay, and ancillary procedures. Results: Anterograde and retrograde URS groups were similar for demographic and stone related characteristics. The success rate of the anterograde URS group was significantly higher than the retrograde URS group (97.1% vs. 78.2%, p=0.0007). The complication rates were similar for the two groups (p=0.86). Clavien grade I and II complications were observed in 3 patients in each group. The mean hemoglobin drop was 0.5 g/dL in the anterograde URS group and blood transfusion was not performed in any of the patients. The mean duration of operation was 41.2±12.5 minutes in the mini-PNL group and 59.6±15.1 minutes in the RIRS group and the difference was statistically significant (p=0.02). The median duration of hospitalization was 1 day for both groups. Conclusions: Performing anterograde URS in supine position provided better success rates and similar complication rates compared to retrograde URS. Based on these results anterograde URS shall be considered as one of the primary treatment options for management of impacted upper ureteral stones in the elderly population.
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Humans , Aged , Lithotripsy , Ureteral Calculi/surgery , Retrospective Studies , Treatment Outcome , Ureteroscopy , Length of StayABSTRACT
In recent years, with the rapid development of rigid ureteroscopy and flexible ureteroscope lithotripsy in the field of urology, great changes have been made in the treatment of urinary calculi. Although flexible ureteroscope lithotripsy is easy to be damaged and expensive to maintain, it has high technical requirements for doctors, but it does not need to establish other traumatic channels, but uses the natural cavity of human urinary system, It has been paid more and more attention by urologists and has a good development prospect. Stone free rate is an objective index to judge the efficiency of flexible ureteroscope lithotripsy. The stone free rate and treatment after flexible ureteroscope lithotripsy have always been a difficult problem. Many scholars at home and abroad have studied the influencing factors of stone free rate after flexible ureteroscope lithotripsy, studies have shown that large stone load, hard stone composition, narrow angle of renal pelvis and calyceal and severe hydronephrosis are the main risk factors leading to the reduction of postoperative one-time stone free rate. In this paper, the research results in this field at home and abroad will be summarized.
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OBJECTIVE@#To evaluate the effectiveness of super-selective renal artery embolization in treatment of post-percutaneous nephrolithotomy bleeding, and to analyse the causes of failure embolization.@*METHODS@#In the study, 65 post-percutaneous nephrolithotomy patients with severe renal bleeding and hemodynamic instability were treated by super-selective renal artery embolization. First of all, we performed selective renal arteriography. After clarifying the location of the bleeding, superselective intubation of the injured vessel with a microcatheter was carried out. Then the injured vessel was embolized with Tornado micro-coil. When complete embolization was not achieved with micro-coil, a small amount of gelatin sponge particles were added. If there was no positive finding of the beginning selective renal arteriography, the following measures could be taken to prevent missing lesions: (1) Abdominal aorta angiography was performed to determine whether there were anatomical variations, such as accessory renal arteries or multiple renal arteries; (2) Ultra-selective intubation angiography next to the nephrostomy tube path was performed; (3) Renal arteriography was repeated; (4) Renal arteriography after removing the nephrostomy tube while retaining the puncture channel. We evaluated the different angiographic findings and analysed the causes of embolization failure.@*RESULTS@#Bleeding was successfully controled in 60 patients (62 kidneys) whose renal arteriography was postive. Positive findings included: pseudoaneurysm formation, patchy contrast extravasation, pseudoaneurysm combined with arteriovenous fistula, contrast agent entering the collection system, extravascular perinephric leakage of contrast. After first embolization, bleeding was controled in 53 patients (55 kidneys). The success rate after the first and second embolization was 88.7% and 96.7% respectively. The second session was required because of failure to demonstrate bleeding arteries during the first session (4 patients, 57.1%) and recurrent hemorrhage of the embolized injured arteries (2 patients, 28.6%). In 5 patients with no positive findings, after conservative treatment, hematuria disappeared. All the patients were followed up for 3, 6, and 12 months after embolization, and no hematuria occurred again, and no sustained and serious renal insufficiency.@*CONCLUSION@#Super-selective renal artery embolization is an effective treatment for post percutaneous nephrolithotomy bleeding. The main cause of failure is omitting of injured arteries during renal arteriography. Renal artery branch injury has various manifestations. Attention should paid to the anatomical variation of the renal artery, and patient and meticulous superselective intubation angiography is the key to avoiding missing the lesion and improving the success rate of embolization.
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Humans , Embolization, Therapeutic , Hemorrhage/etiology , Nephrolithotomy, Percutaneous/adverse effects , Nephrostomy, Percutaneous , Renal Artery , Retrospective StudiesABSTRACT
Objective@#To explore the application value of B-mode ultrasound combined with real-time color doppler ultrasound in percutaneous nephrolithotomy and provide guidance for clinical application.@*Methods@#A total of 150 patients underwent percutaneous nephrolithotomy from December 2015 to December 2017 in the People's Hospital of Lishui were selected.According to different ultrasound guidance methods, the patients were divided into two groups.The single group(70 cases) received B-guided puncture.In the combined group(80 cases), B-ultrasound combined with real-time color doppler ultrasound-guided puncture was applied.The incidence of complications and the success rate of lithotomy were compared between the two groups.The changes in renal artery blood flow parameters[end diastolic velocity(EDV), peak systolic velocity(PSV) and resistance index(RI)] before and after surgery in the combined group were observed.@*Results@#The incidence of complications in the combined group was 2.50%(2/80), which was lower than that in the single group[14.29%(10/70)](χ2=7.046, P<0.05). The success rate of stone extraction in the combined group was 98.75%(79/80), which was higher than that in the single group[85.71%(60/70)](χ2=9.336, P<0.01). The EDV and PSV of the renal interlobar arteries of the combined group before and after surgery had statistically significant differences (t=3.794, 5.385, all P<0.05), but the RI had no statistically significant difference (P>0.05). The EDV and PSV of renal segment arteries in the combined group before and after surgery had statistically significant differences (t=4.535, 4.884, all P<0.05), while the RI had no statistically significant difference (P>0.05). The EDV and PSV of renal aorta of the combined group before and after surgery showed no statistically significant differences (all P>0.05), while the RI showed statistically significant difference (t=4.360, P<0.05).@*Conclusion@#B-mode ultrasound combined with real-time color doppler ultrasound guidance for percutaneous nephrolithotomy can help reduce the incidence of complications and improve the success rate of stone extraction to a certain extent.
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Abstract Objective: To compare two percutaneous techniques used in the treatment of malignant obstructive uropathy-antegrade double-J stent placement (JJ stenting) and percutaneous nephrostomy-in terms of their cost-effectiveness, from the perspective of the Brazilian public health care system. Materials and Methods: In this cost-effectiveness analysis, we employed decision-analytic modeling. We calculated material costs from 2017 factory prices listed by the Brazilian Pharmaceutical Market Regulatory Board (for medications) and published in the journal Revista Simpro (for medical devices). Procedure-related costs were evaluated, as were the rates of technical and clinical success. Those measures were then used as inputs for a cost-effectiveness analysis comparing the two procedures. Results: The sample comprised 41 patients, of whom 16 underwent antegrade JJ stenting (26 procedures) and 10 underwent percutaneous nephrostomy (15 procedures). Patient records, radiology reports, and expense reports of the interventional radiology department of the public hospital where the study was conducted were analyzed retrospectively. There were no significant complications: one patient had low back pain, and one had a transient retroperitoneal hematoma. The mean procedure time was 24 min, and clinical success (improvement in serum creatinine and resolution of hydronephrosis) was achieved in 97.5% of the cases. The average cost of JJ stenting was significantly lower than was that of percutaneous nephrostomy (US$164.10 vs. US$552.20). Conclusion: In the absence of any clinical contraindications, antegrade JJ stenting is a suitable alternative to both percutaneous nephrostomy and retrograde stenting in patients with dilated renal collecting systems secondary to malignant ureteral obstruction, providing significant cost savings and high success rates.
Resumo Objetivo: Comparar a relação custo-efetividade de duas técnicas percutâneas utilizadas no tratamento da uropatia obstrutiva maligna - inserção anterógrada de cateter duplo J (JJ) versus nefrostomia percutânea - sob a perspectiva do sistema de saúde pública brasileira. Materiais e Métodos: Nesta análise de custo-efetividade por modelo analítico de decisão, os custos de material foram calculados a partir dos preços de fábrica de 2017 listados pela Câmara Brasileira de Regulamentação de Medicamentos (para medicamentos) e publicados na Revista Simpro (para dispositivos médicos). Custos relacionados ao procedimento e taxas de sucesso técnico e clínico foram avaliados. Essas medidas foram então usadas como insumos para uma análise de custo-efetividade comparando os dois procedimentos. Resultados: A amostra foi composta de 41 pacientes, dos quais 16 foram submetidos a 26 procedimentos de inserção anterógrada de JJ e 10 foram submetidos a 15 nefrostomias percutâneas. Registros de pacientes, relatórios de radiologia e relatórios de despesas do serviço de radiologia intervencionista do hospital onde o estudo foi conduzido foram analisados retrospectivamente. Não houve complicações significativas: um paciente apresentou lombalgia e um apresentou hematoma retroperitonial transitório. O tempo médio de procedimento foi 24 minutos e o sucesso clínico (melhora da creatinina sérica e resolução da hidronefrose) foi alcançado em 97,5% dos casos. O custo médio da inserção de JJ (US$ 164.10) foi significativamente menor do que o da nefrostomia percutânea (US$ 552.20). Conclusão: Na ausência de qualquer contraindicação clínica, a inserção anterógrada de JJ é uma alternativa adequada à nefrostomia percutânea e inserção retrógrada em pacientes com sistema coletor renal dilatado secundário a obstrução maligna, proporcionando economia significativa e altas taxas de sucesso.
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Abstract Objective: To establish an overview of computed tomography (CT)-guided percutaneous nephrostomy performed at a referral center for cancer, addressing the characteristics of patients submitted to this intervention, as well as the indications for it, the technical specificities of it, and its main complications. Materials and Methods: This was a retrospective study involving a review of the electronic medical records and images of patients submitted to CT-guided percutaneous nephrostomy at a referral center for cancer between 2014 and 2016. Results: A total of 201 procedures were evaluated. In most cases, the obstruction was caused by a malignant neoplasm. Complications occurred in 9.5% of the cases, and an additional intervention was required (typically for catheter repositioning) in 36.6%. Post-procedure complications were not found to be significantly associated with the type of previous cancer treatment, the technique used, the caliber of the drain used in the procedure, or the degree of dilatation of the collection system prior to the procedure. Conclusion: In cancer patients, CT-guided percutaneous nephrostomy is an effective treatment, with success rates and complication rates similar to those reported in the general population.
Resumo Objetivo: Estabelecer o perfil da nefrostomia percutânea guiada por tomografia computadorizada (TC) em um centro de referência oncológico, conhecendo as características do paciente submetido a esta intervenção, indicações e especificidades técnicas do procedimento, além das complicações mais frequentes. Materiais e Métodos: Foi realizada revisão dos prontuários eletrônicos e das imagens de pacientes submetidos a nefrostomia percutânea guiada por TC entre os anos de 2014 e 2016 em um centro de referência oncológico. Resultados: Foram avaliados 201 procedimentos. As doenças neoplásicas malignas foram as principais causas da obstrução. Houve necessidade de reabordagem em 36,6% dos casos, em sua maioria para reposicionamento do cateter, e ocorreram complicações em 9,5% dos casos. Não houve associação estatisticamente significante entre as complicações pós-nefrostomia percutânea e o tipo de tratamento oncológico prévio, a técnica empregada, o calibre do dreno utilizado no procedimento, ou o grau de dilatação do sistema coletor prévio ao procedimento. Conclusão: A nefrostomia percutânea guiada por TC é eficaz em pacientes oncológicos, com taxas de sucesso e complicações semelhantes às observadas na população geral na literatura.
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Objective@#To investigate the safety and effectiveness of percutaneous nephrolithotomy(PCNL) with X-ray and ultrasound in the design and implementation of the best percutaneous puncture pathway for complex renal calculi.@*Methods@#Eighty-six patients with complex renal calculi treated in Shengjing Hospital Affiliated to China Medical University from May 2015 to May 2018 were collected.Before operation, CT/IVP was used to design the best percutaneous puncture pathway and selected the calices to be punctured.The intersection of the central axis of the calyx fornix, the neck of the calyx and the body surface were regarded as the puncture point on the body surface, and the connection between the central axis of the calyx fornix and the center of the calyx fornix was the puncture line.The ultrasound probe was placed slightly below the planned puncture point.According to the order of echolocation of hydronephrosis or hump-like calculi, two-step puncture was adopted to puncture the calyx along the central axis of the calyx dome and the calyx neck.The guide wire was retained and the channel was gradually expanded to F24 standard channel for ballistic or ultrasonic lithotripsy.@*Results@#Percutaneous puncture pathways were successfully established in 86 cases, 65 cases were single-channel and 21 cases were double-channel.The operation time(from puncture to indwelling nephrostomy) was (65.3±17.2)min, and the hemoglobin decreased in (10.1±4.5)g/L.The hospitalization time of the patients was (7.2±5.2)d.The first stage stone clearance rate was 74.4%(64/86), and the second stage stone clearance rate was 95.3%(82/86).@*Conclusion@#Combined with the advantages of X-ray and ultrasound, the puncture route shoud be designed by CT/IVP before operation, and puncture shoud be carried out under the guidance of ultrasound during operation.The best percutaneous puncture pathway can be established to complete the treatment of complex renal calculi.
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Objective@#To compare the safety and efficiency of totally ultrasonography-guided super-mini-percutaneous nephrolithotomy(SMP) in the treatment of upper urinary stone in adults and children(<14years).@*Methods@#From May 2015 to July 2018, 81 cases of children(53%) and 71(47%) cases of adults with upper tract stones underwent the SMP by total ultrasound guidance. In the group of children, it’s including 53 male and 28 female with 85 channels in total, the patients age ranged from 10 months to 14 years, [mean (56.0±39.7) months], The stone size ranged from 0.8-3.5 cm, [mean (1.7±0.7)cm]. About stone distribution, 42 cases of pelvic stones, 25 cases of calyceal and pelvic stones, 5 cases of calyceal stones, 7 cases of upper uretaral stones, 1 case of upper ureteral and calyceal stones, 1 case of malformation with double renal pelvis and ureter. Urinary infection rate was 86.4%(70/81), positive rate of urinary culture was 39.5%(32/81). In the group of adults, it’s including 43 male and 28 female, the patients aged from 18 to 81 years, [mean (44.1±15.4)years], The stone size ranged from 1.0-3.0 cm, [mean (1.7±0.6)cm]. About Stone distribution, 19 cases of pelvic stones, 13 cases of calyceal and pelvic stones, 7 cases of calyceal stones, 24 cases of upper uretaral stones, 3 cases of upper ureteral and calyceal stones, 1 case of malformation with double renal pelvis and ureter. Urinary infection rate was 87.3%(62/71), positive rate of urinary culture was 26.8%(19/71). The patient was placed in the lithotomy position under general anesthesia. A 5F ureteric catheter was retrogradely inserted into the collecting system and urethral catheter was placed in the bladder. The patient was then turned prone. The selected calix was punctured under ultrasound guidance by 18G puncture needle and a 0.032 inch guidewire was inserted into the collecting system. Nephrostomy tract was established using Dilators(it was done in one step for 12F and in two steps for 14F). After the corresponding size of suction-evacuation sheath was placed, the sheath was connected to the specimen collection bottle via the oblique branch of a metal connector. The miniature endoscope was inserted into the sheath to observe the collecting system and stone fragmentation was completed by using YAG laser or pneumatic lithotripter. Stone free rate after surgery at 1day(SFR) and 1 month(1 month SFR), stone size, operative time(from starting fragmentation to the end of the surgery), hemoglobin drop and hematocrit drop in the first day after surgery, rate of surgecal complications, tubeless rate(totally tubless: no ureteric stent and nephrostomy tube; tubeless: no nephrostomy tube but ureteric stent), average length of hospital stay and urinary infection were recorded and compared.@*Results@#In children group, mean operative time was (27.7±13.0)min(range 5-60 min), SFR and SFR at 1 month were 96.3%(78/81)and 98.8%(80/81), mean hemoglobin drop was (8.0±9.1)g/L(range 0-41 g/L), mean hematocrit drop was 0.026±0.029(range 0-0.135), totally tubeless rate was 86.4%(71/81), mean hospital stay was (2.5±0.9)days(range 1-5 days). Complications were observed in 9 cases and classified using Calvien grading system, Grade Ⅰ in 8 cases: postoperative fever in 4, hematuresis in 1, perirenal hematoma, postoperative distal ureteral stone in 1 cases and delayed recovery of intestinal function in 1 case, all had a spontaneous recovery without special managements; Grade Ⅲb in 1 case, massive ascites was discovered during the surgery, and rcovered by puncture drainage.In adult group, mean operative time was (31.2±15.3)min(range 7-80 min), SFR and SFR at 1 month were 97.2%(69/71) and 98.6%(70/71), mean hemoglobin drop was (11.9±8.7)g/L(range 0-32 g/L), mean hematocrit drop was 0.030±0.027(range 0-0.106), totally tubeless rate was 87.3%(62/71), mean hospital stay was(2.4±1.1)days(range 1-8 days), urinary infection rate was 87.3%(62/71), positive rate of urinary culture was 26.8%(19/71). Complications were observed in 4 cases, Grade Ⅰ in 3 cases: hematuresis in 2 and delayed recovery of intestinal function in 1 case, all had a spontaneous recovery without special managements; Grade Ⅲb in 1 case, postoperative distal ureteral stone in 1 cases and cured by ureteroscopic lithotripsy. According to data about Hb drop, risk of hemorrhage is lower in children than adult significantly(P<0.05). There is not significant difference in stone free rate, stone size, operative time, hematocrit drop, surgery complications, totally tubeless rate, stone complexity, average length of hospital stay and urinary infection(P>0.05).@*Conclusions@#With the characteristics of safe, efficacious and rapid recovery, super-mini-percutaneous nephrolithotomy(SMP) can be used as the first choice of the treatment for upper urinary stone both in adults and children.
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Objective To evaluate the clinical efficacy of percutaneous nephrolithotomy combined with flexible ureteroscopy and holmium laser lithotripsy in the treatment of complicated renal calculi.Methods Clinical data of 139 patients with complicated renal calculi from March 2013 to March 2019 in Miyun Teaching Hospital,Capital Medical University were retrospectively analyzed.There were 76 males and 63 females,the average was (47.9 ±3.1) years,aged from 27 to 75 years.The total patients were divided into control group (n =69) and treatment group (n =70) according to different treatment method.The patients in the control group treated with percntaneous nephrolithotorny,the patients in the treatment group were treated with flexible ureteroscopy and holmium laser lithotripsy on the bassis of the control group.Compared the operation time,hospital stays,intraoperative blood loss,effective rate and complication incidence rate between two groups.Measurement data were expressed as mean ± standard deviation (Mean ± SD),and t-test was used for comparison between groups;count data was compared by Chi-square test.Results In the control group,the operation time,length of hospital stay and intraoperative blood loss were (65.85 ± 3.83) min and (8.83 ± 4.00) d,(130.72 ± 1.20) ml,respectively,the treatment group were (43.44 ± 3.16) min,(5.72 ± 1.07) d,(96.21 ± 0.98) ml,respectively,the difference between group there was statistical significance (P ＜ 0.05);the total effective rate of the control group was 84.0％ (58/69),which was significantly lower than that of the treatment group [95.7％ (67/70)],and the difference between the groups was statistically significant (P ＜ 0.05).The incidence of postoperative complications of the treatment group[2.8％ (2/70)] was significantly lower than the control group[14.5％ (10/69)],and the difference between the two groups was statistically significant (P ＜ 0.05).Conclusion The complicated renal calculi by percutaneous nephrolithotomy combined with flexible ureteroscopy and holmium laser lithotripsy has the advantage of short operation time,less blood loss,faster recovery and low complication incidence rates,has clinical use and promotion value.
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Objective To compare the safety and efficiency of totally ultrasonography-guided super-mini-percutaneous nephrolithotomy(SMP) in the treatment of upper urinary stone in adults and children (＜ 14years).Methods From May 2015 to July 2018,81 cases of children(53％) and 71 (47％) cases of adults with upper tract stones underwent the SMP by total ultrasound guidance.In the group of children,it's including 53 male and 28 female with 85 channels in total,the patients age ranged from 10 months to 14 years,[mean (56.0 ± 39.7) months],The stone size ranged from 0.8-3.5 cm,[mean (1.7 ± 0.7) cm].About stone distribution,42 cases of pelvic stones,25 cases of calyceal and pelvic stones,5 cases of calyceal stones,7 cases of upper uretaral stones,1 case of upper ureteral and calyceal stones,1 case of malformation with double renal pelvis and ureter.Urinary infection rate was 86.4％ (70/81),positive rate of urinary culture was 39.5％ (32/81).In the group of adults,it's including 43 male and 28 female,the patients aged from 18 to 81 years,[mean (44.1 ± 15.4) years],The stone size ranged from 1.0-3.0 cm,[mean (1.7 ± 0.6) cm].About Stone distribution,19 cases of pelvic stones,13 cases of calyceal and pelvic stones,7 cases of calyceal stones,24 cases of upper uretaral stones,3 cases of upper ureteral and calyceal stones,1 case of malformation with double renal pelvis and ureter.Urinary infection rate was 87.3％ (62/71),positive rate of urinary culture was 26.8％ (19/71).The patient was placed in the lithotomy position under general anesthesia.A 5F ureteric catheter was retrogradely inserted into the collecting system and urethral catheter was placed in the bladder.The patient was then turned prone.The selected calix was punctured under ultrasound guidance by 18G puncture needle and a 0.032 inch guidewire was inserted into the collecting system.Nephrostomy tract was established using Dilators(it was done in one step for 12F and in two steps for 14F).After the corresponding size of suction-evacuation sheath was placed,the sheath was connected to the specimen collection bottle via the oblique branch of a metal connector.The miniature endoscope was inserted into the sheath to observe the collecting system and stone fragmentation was completed by using YAG laser or pneumatic lithotripter.Stone free rate after surgery at lday(SFR) and 1 month(1 month SFR),stone size,operative time(from starting fragmentation to the end of the surgery),hemoglobin drop and hematocrit drop in the first day after surgery,rate of surgecal complications,tubeless rate (totally tubless:no ureteric stent and nephrostomy tube;tubeless:no nephrostomy tube but ureteric stent),average length of hospital stay and urinary infection were recorded and compared.Results In children group,mean operative time was (27.7 ± 13.0)min(range 5-60 min),SFR and SFR at 1 month were 96.3％ (78/81)and 98.8％ (80/81),mean hemoglobin drop was (8.0 ± 9.1) g/L(range 0-41 g/L),mean hematocrit drop was 0.026 ±0.029(range 0-0.135),totally tubeless rate was 86.4％ (71/81),mean hospital stay was (2.5 ±0.9)days(range 1-5 days).Complications were observed in 9 cases and classified using Calvien grading system,Grade Ⅰ in 8 cases:postoperative fever in 4,hematuresis in 1,perirenal hematoma,postoperative distal ureteral stone in 1 cases and delayed recovery of intestinal function in 1 case,all had a spontaneous recovery without special managements;Grade Ⅲ b in 1 case,massive ascites was discovered during the surgery,and rcovered by puncture drainage.In adult group,mean operative time was (31.2 ± 15.3) min(range 7-80 min),SFR and SFR at 1 month were 97.2％ (69/71) and 98.6％ (70/71),mean hemoglobin drop was (11.9 ± 8.7) g/L (range 0-32 g/L),mean hematocrit drop was 0.030 ± 0.027 (range 0-0.106),totally tubeless rate was 87.3％ (62/71),mean hospital stay was (2.4 ± 1.1) days (range 1-8 days),urinary infection rate was 87.3％ (62./71),positive rate of urinary culture was 26.8％ (19/71).Complications were observed in 4 cases,Grade Ⅰ in 3 cases:hematuresis in 2 and delayed recovery of intestinal function in 1 case,all had a spontaneous recovery without special managements;Grade Ⅲ b in 1 case,postoperative distal ureteral stone in 1 cases and cured by ureteroscopic lithotripsy.According to data about Hb drop,risk of hemorrhage is lower in children than adult significantly (P ＜ 0.05).There is not significant difference in stone free rate,stone size,operative time,hematocrit drop,surgery complications,totally tubeless rate,stone complexity,average length of hospital stay and urinary infection (P ＞ 0.05).Conclusions With the characteristics of safe,efficacious and rapid recovery,super-mini-percutaneous nephrolithotomy (SMP) can be used as the first choice of the treatment for upper urinary stone both in adults and children.
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Objective@#To evaluate the clinical efficacy of percutaneous nephrolithotomy combined with flexible ureteroscopy and holmium laser lithotripsy in the treatment of complicated renal calculi.@*Methods@#Clinical data of 139 patients with complicated renal calculi from March 2013 to March 2019 in Miyun Teaching Hospital, Capital Medical University were retrospectively analyzed. There were 76 males and 63 females, the average was (47.9±3.1) years, aged from 27 to 75 years. The total patients were divided into control group (n=69) and treatment group (n=70) according to different treatment method. The patients in the control group treated with percutaneous nephrolithotorny, the patients in the treatment group were treated with flexible ureteroscopy and holmium laser lithotripsy on the bassis of the control group. Compared the operation time, hospital stays, intraoperative blood loss, effective rate and complication incidence rate between two groups. Measurement data were expressed as mean± standard deviation (Mean±SD), and t-test was used for comparison between groups; count data was compared by Chi-square test.@*Results@#In the control group, the operation time, length of hospital stay and intraoperative blood loss were (65.85±3.83) min and (8.83±4.00) d, (130.72±1.20) ml, respectively, the treatment group were (43.44±3.16) min, (5.72±1.07) d, (96.21±0.98) ml, respectively, the difference between group there was statistical significance (P<0.05); the total effective rate of the control group was 84.0% (58/69), which was significantly lower than that of the treatment group [95.7% (67/70)], and the difference between the groups was statistically significant (P<0.05). The incidence of postoperative complications of the treatment group[2.8% (2/70)] was significantly lower than the control group[14.5% (10/69)], and the difference between the two groups was statistically significant (P<0.05).@*Conclusion@#The complicated renal calculi by percutaneous nephrolithotomy combined with flexible ureteroscopy and holmium laser lithotripsy has the advantage of short operation time, less blood loss, faster recovery and low complication incidence rates, has clinical use and promotion value.
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Objective To investigate the related factors of systemic inflammatory response syndrome after percutaneous nephrolithotomy in the treatment of upper urinary tract stones.Methods The clinical data of 101 patients after percutaneous nephrolithotomy from August 2016 to April 2018 in Miyun Teaching Hospital,Capital Medical University were retrospectively analysed.Screened the independent variable such as gender,with fever or not,with diabetes or not,with hydronephrosis or not,urine leucocyte count,volume of urinary calculi,CT attenuation value of urinary calculi and presence of intraoperative infection,and analyzed the relationship those with systemic inflammatory response syndrome after surgery.Univariate and multivariate logistic regression analysis the factors related to systemic inflammatory response in patients after surgery.Results Of the 101 patients,62 cases was male,and 39 cases was female,12 (11.9％) suffered postoperative systemic inflammatory response syndrome.Univariate regression analysis indicated that the risk factors of systemic inflammatory response syndrome after percutaneous nephrolithotomy were gender,with diabetes or not,urine leucocyte count,volume of urinary calculi and presence of intraoperative infection.Furthermore,multivariate logistic regression analysis revealed that with diabetes,intraoperative infection,urine leucocyte count and volume of urinary calculi were the independent factors of systemic inflammatory response syndrome after percutaneous nephrolithotomy.Conclusion Patients with diabetes,intraoperative infection,urine leucocyte count and volume of urinary calculi could be predicted as the independent factors of systemic inflammatory response syndrome after percutaneous nephrolithotomy,but it has no relationship with gender,with a history of fever or not,with hydronephrosis or not,and CT attenuation value of urinary calculi.
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Objective To investigate the safety and effectiveness of percutaneous nephrolithotomy (PCNL)with X-ray and ultrasound in the design and implementation of the best percutaneous puncture pathway for complex renal calculi.Methods Eighty-six patients with complex renal calculi treated in Shengjing Hospital Affiliated to China Medical University from May 2015 to May 2018 were collected.Before operation,CT/IVP was used to design the best percutaneous puncture pathway and selected the calices to be punctured.The intersection of the central axis of the calyx fornix,the neck of the calyx and the body surface were regarded as the puncture point on the body surface,and the connection between the central axis of the calyx fornix and the center of the calyx fornix was the puncture line.The ultrasound probe was placed slightly below the planned puncture point.According to the order of echolocation of hydronephrosis or hump-like calculi,two-step puncture was adopted to puncture the calyx along the central axis of the calyx dome and the calyx neck.The guide wire was retained and the channel was gradually expanded to F24 standard channel for ballistic or ultrasonic lithotripsy.Results Percutaneous puncture pathways were successfully established in 86 cases,65 cases were single-channel and 21 cases were double-channel.The operation time(from puncture to indwelling nephrostomy) was (65.3 ± 17.2)min,and the hemoglobin decreased in (10.1 ± 4.5)g/L.The hospitalization time of the patients was (7.2 ± 5.2) d.The first stage stone clearance rate was 74.4％ (64/86),and the second stage stone clearance rate was 95.3％ (82/86).Conclusion Combined with the advantages of X-ray and ultrasound,the puncture route shoud be designed by CT/IVP before operation,and puncture shoud be carried out under the guidance of ultrasound during operation.The best percutaneous puncture pathway can be established to complete the treatment of complex renal calculi.
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Objective To evaluate the consistency among the results of preoperative midstream urine culture (PMUC), renal pelvis urine culture (RPUC) and renal stone (RSC) culture in patients undergoing percutaneous nephrolithotomy (PNL) and their relationship with postoperative infection. Methods This was a multicenter prospective study. From September 2014 to November 2017, 115 patients undergoing standard channel PNL or microchannel PNL in the First Affiliated Hospital of Soochow University and Yancheng Hospital of Traditional Chinese Medicine were selected. The PMUC, RPUC and RSC were detected. Samples for RPUC and RSC were obtained during PNL. The clinical data, stone configuration, stone burden and results of cultures were recorded. Results In the 115 patients, PMUC positive was in 4 cases (3.5%), RPUC positive was in 17 cases (14.8%), and RSC positive was in 16 cases (13.9% ); both RPUC and RSC positive were in 7 cases (6.1% ), among whom consistent pathogenic bacterium was in 6 cases, and inconsistent pathogenic bacterium was in 1 case; all the 3 cultures were positive in 1 case, but the types of pathogenic bacterium of PMUC were totally different with RPUC and RSC. At least one positive of the 3 cultures was in 29 cases (25.2% ). The types of pathogenic bacterium of PMUC were multidrug susceptible Escherichia coli and Staphylococcus aureus , and the types of pathogenic bacterium of RPUC and RSC were multidrug resistant pathogens and/or fungus. The consistency of pathogenic bacterium between PMUC and RPUC, RSC was very low; while the consistency of pathogenic bacterium between RPUC and RSC was very high (6/7). Postoperative infection occurred in 8 of 115 patients (7.0% , 5 cases of infective fever and 3 cases of urinary sepsis). In the 8 patients, PMUC was negative, PRUC positive in 4 cases, RSC positive in 7 cases, and both PRUC and RSC positive were in 3 cases. Conclusions PMUC can not accurately reflect the true situation of upper urinary tract renal calculi and pyelo-urine pathogenic bacterium. In patients with PNL postoperative infectious complications, the result of PMUC is often negative, but the results of RPUC and RSC are mostly positive. RPUC and RSC are helpful to detecting pathogenic bacterium in time, guiding the application of sensitive antibiotics, preventing and treating PNL postoperative infection.
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Objective@#To investigate the safety and efficacy of needle-tract assisted standard percutaneous nephrolithotomy (PCNL) for the treatment of complicated upper urinary tract calculi.@*Methods@#The clinical data of 1 562 patients with complicated upper urinary calculi who received standard PCNL from December 2013 to December 2017 at Department of Urology, the First Affiliated Hospital of Xiamen University were retrospectively analyzed. There were large residual stones in 256 patients through B-ultrasound exploration after standard PCNL, could′t be detected with nephoscope in standard PCNL tracts. 16 F mini PCNL tract were established in 120 cases for treatment of residual stones, while needle-tract were established in order to guide nephroscope to find residual stones in 126 cases. Needle-tract were transferred to 16 F mini PCNL tract for treatment of residual stones in 10 patients if these residual stones could′t be detected through needle-tract. Operation time, change of hemoglobin level after operation, incidence of postoperative complications, time of hospitalization and rate of stone clearance were measured in two groups. The statistical methods used included t test, Wilcoxon rank sum test, and χ2 test.@*Results@#There were 1 to 3 mini tracts (M(QR): 1(1)) established in the mini tracts group and 1 to 7 needle-tracts (M(QR): 3(2)) established in the needle-tract group (Z=-10.57, P=0.000). Compared with mini tract group, the operation time ((62.0±18.0) minutes vs. (84.0±15.5) minutes, t=10.242, P=0.000), hospitalization time ((4.40±0.86) days vs. (5.20±0.81) days, t=7.570, P=0.049), hemoglobin dropped ((1.31±0.47) g/L vs. (2.74±0.63) g/L, t=20.12, P=0.000), and incidence of postoperative complications (7.9% (10/126) vs. 19.2% (23/120), χ2=6.674, P=0.01) of needle-tract group were lower, while postoperative stone clearance rate was higher (89.7% vs. 76.7%, χ2=7.497, P=0.006). No perioperative severe complications such as pleural injury, pneumatothorax, perforation of renal, trauma of abdominal organ occurred in two groups.@*Conclusion@#Needle-tract assisted standard PCNL for the treatment of complicated upper urinary calculi can significantly improve stone clearance rate, reduce operation time, decrease risk of kidney and surrounding organs damage.
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Objective@#To evaluate the safety and effectiveness of ultrasound-guided percutaneous nephrolithotomy (PCNL) accessed by SVOF-principle and two-step puncture techniques.@*Methods@#A total of 838 cases with upper urinary stones underwent percutaneous nephrolithotomy successfully accessed by ultrasound-guided between June 2007 and December 2015 at Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. Of all cases were divided in two groups: hydronephrosis calyces puncture group include 425 cases and SVOF-principle puncture group include 413 cases. The access establishment time, operation time, stone free rate (SFR), postoperative complications, and postoperative hospitalization time between the two groups we compared by t test or χ2 test.@*Results@#Statistically significant differences were observed between hydronephrosis calyces puncture group and SVOF-principle puncturegroup in the first access establishment time ((16.5±8.4) minutes vs. (11.2±5.9) minutes, t=3.931, P=0.013), one-stage SFR (74.3% vs. 85.7%, χ2=16.868, P=0.000), postoperative hospitalization time ((6.4±2.1) days vs. (4.8±1.8)days, t=4.574, P=0.000), transfusion rate (7.1% vs. 2.9%, χ2=8.027, P=0.006), and embolization rate (3.3% vs. 1.0%, χ2=5.390, P=0.020). There were no statistically significant differences in operation time, total SFR, postoperative fever and sever infection between these two groups (all P>0.05). In both two groups, no serious complications such as peripheral organ injury and death occurred.@*Conclusions@#PCNL accessed guided by ultrasound with SVOF-principle and two-step puncture techniques has advantages of quick puncture location, high stone free rate, fewer complications and fast recovery. This technique is an effective and safe treatment option for upper urinary stones and deserved promotion and application in clinic.
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Objective@#To investigate the clinical safety and efficacy of ultrapercutaneous nephrolithotomy combined with ureteroscopy in the treatment of severe urete.@*Methods@#Thirty-six patients (20 males, 16 female) with ureteral obstruction underwent super-mini percutaneous nephroscope combined with flexible ureteroscope balloon dilation of 36 patients, 18 ureteral strictures occurred secondary to ureteroscope lithotripsy, 12 secondary to laparooscopic ureterolithotomy, 6 secondary to ureteral end to end anastomosis and one secondary to bladder ureter reimplantation.@*Results@#All of the surgeries were successful. Mean operation time was 60 min, the hospital stay was 2 to 7 days, and mean bleeding volume was 43 ml. No patients suffered fever, abdominal distention and lumbar distention. All cases were followed up for 12 months. Twenty cases were cured, 10 cases performed better, and 6 cases developed re-stenosis. Treatment efficacy was around 83.3%(30/36).@*Conclusions@#Super-mini percutaneous nephroscope combined with flexible ureteroscope balloon dilation has the advantages of less bleeding, less trauma, shorter hospital stay, and remarkable curative effect, which is worthy of clinical popularization and application.