Complicaciones frecuentes en pacientes con nefrolitotomía percutánea / Common complications in patients with percutaneous nephrolithotomy

RESUMEN La nefrolitotomía percutánea es un procedimiento estandarizado para el tratamiento de la litiasis renal. El objetivo de esta comunicación fue describir las complicaciones que más incidieron en los pacientes que fueron atendidos en el Hospital Universitario Clínico-Quirúrgico «Arnaldo Milián Castro¼, en el servicio de Urología, de enero de 2015 a diciembre de 2019, a los cuales se les realizó nefrolitotomía percutánea, así como el tratamiento que recibieron y su evolución. Este estudio mostró bajo índice de complicaciones, lo que guarda relación con el poco tiempo utilizado para realizar esta técnica. Esto resultó beneficioso ya que contribuyó a la corta estadía hospitalaria y disminuyó el consumo de materiales e insumos médicos. También representa un gran logro para los médicos y sobre todo para el paciente, el cual puede recuperarse en un menor período de tiempo y vincularse rápidamente a su vida diaria.

ABSTRACT Percutaneous nephrolithotomy is a standardized procedure for the treatment of kidney stones. The objective of this communication was to describe complications, treatment and evolution of patients who underwent a percutaneous nephrolithotomy in the Urology service at "Arnaldo Milián Castro" Clinical and Surgical University Hospital from January 2015 to December 2019. This study showed a low rate of complications, which is related to the short time used to perform this technique. This was beneficial since it contributed to the short hospital stay and decreased the consumption of medical materials and supplies. It also represents a great achievement for doctors and above all for the patients, who can recover in a shorter period of time and be quickly returned to their daily life.

Diferencias entre el Urocultivo Previo y el cultivo del Catéter doble J. Implicancias clínicas / DIFFERENCES BETWEEN PREVIOUS URINE CULTURE AND DOUBLE J CATHETER CULTURE. CLINICAL IMPLICATIONS

Las infecciones urinarias complicadas, dentro de las cuales se encuentran las asociadas a catéteres, son un hallazgo frecuente de la práctica clínica. Las complicaciones infecciosas después de los procedimientos urológicos son una fuente importante de morbimortalidad y consumen múltiples recursos sanitarios. La colonización bacteriana en el catéter ureteral juega un papel esencial en la patogénesis de la infección, y el uso de profilaxis antimicrobiana en urología es controvertido. El objetivo de nuestro trabajo fue evaluar la utilidad de la profilaxis antibiótica en la extracción del catéter doble J

Complicated urinary infections, among which are those associated with catheters, are a frequent finding in clinical practice. Infectious complications after urological procedures are an important source of morbidity and mortality and consume multiple healthcare resources. Bacterial colonization in the ureteral catheter plays an essential role in the pathogenesis of infection, and the use of antimicrobial prophylaxis in urology is controversial. Te objective of our work was to evaluate the usefulness of antibiotic prophylaxis in the extraction of the double J catheter

Nefrolitotricia percutánea ambulatoria: nuestra experiencia en 156 casos / Ambulatory Percutaneous Nephrolithotomy: Our experience in 156 cases

OBJETIVOS: analizar y presentar nuestros resultados en el tratamiento de la litiasis renal mediante Nefrolitotricia Percutánea (NLP) ambulatoria en un mismo centro. MATERIALES Y MÉTODOS: entre agosto de 2013 y mayo de 2017 se realizó una recolección prospectiva de datos de los pacientes sometidos a NLP ambulatoria tubeless con catéter doble J o totally tubeless por litiasis renal. Se excluyeron aquellos pacientes con score de ASA >3. Se analizaron los datos preoperatorios, intra- y posoperatorios. Se clasificaron las complicaciones de acuerdo con el sistema de Clavien modificado. Se compararon los valores de hematocrito, hemoglobina, creatininemia y uremia pre- y posoperatoria a las 48 horas. RESULTADOS: en total, se operaron 156 pacientes, a los cuales se les dio el alta el mismo día de la cirugía. La suma de los diámetros máximos de las litiasis, en promedio, fue de 26,6 mm, 32 casos de litiasis coraliforme. La posición más utilizada fue la ventral, con un tiempo promedio de cirugía de 50 minutos. Se realizó NLP tubeless en 125 pacientes y totally tubeless en 29 casos. A 40 pacientes se les colocó un tapón de Surgicel en el tracto de acceso percutáneo. La tasa libre de cálculos fue del 84%, y en pacientes con litiasis coraliforme fue del 53%. No hubo complicaciones intraoperatorias y el 80% de los pacientes no presentó complicaciones. La tasa de reinternación fue del 3%. Si bien se hallaron diferencias significativas entre los valores pre- y posoperatorios de hematocrito y hemoglobina (40% y 13,3 g/dl vs. 39% y 12,8 g/dl; p=0,0001 y 0,0001, respectivamente), estas no fueron clínicamente significativas y solamente un paciente requirió de transfusión de sangre (0,6%). CONCLUSIONES: en nuestra experiencia, la NLP ambulatoria fue segura, con tasas libres de cálculos y complicaciones similares a las realizadas con internación.

OBJECTIVES: To assess the safety and feasibility of ambulatory percutaneous nephrolithotomy (PCNL) at a single institution. METHODS: Data collected prospectively of patients submit for ambulatory PCNL tubeless or totally tubeless between August 2013 and May 2017 were review. Exclusion criteria were patients with ASA score >3. Preoperative, intraoperative, and postoperative data were collected. Complications were classified using the Clavien sistem modified for PCNL. Properative and 48hs postoperative value of hematocrit, hemoglobin, creatininemia and uremia were compare. RESULTS: One hundred and fifty five patients underwent ambulatory PCNL. All patients were discharge the same day of surgery. The median of the sum of the maximum stone diameter was 26,6mm, 32 patients had staghorn calculus. We performed the majority of the surgerys in ventral position with a median time of 50 minutes. One hundred and twenty five patients underwent tubeless PCNL and totally tubeless 29 patients. In 40 cases we used Surgicel for sealing the percutaneous tract. Overall stone-free rate was 84% and 53% in staghorn cases. There were no intraoperative complications and 80% of the patients did not have any complications. Readmission rate was 3%. There was a significant decrease in the postoperative hematocrit and hemoglobin level (40% y 13,3 g/dl vs. 39% y 12,8 g/dl; p=0,0001 y 0,0001), this was not clinically significant. Only one patient required blood transfusion (0,6%). CONCLUSION: Ambulatory PCNL is safe with a stone-free rate, readmisions and complications similar to standard PCNL.

Comparison of the outcomes of laparoscopic pyeloplasty with and without concomitant pyelolithotomy

ABSTRACT Objective We aimed to evaluate the results of laparoscopic pyeloplasty with concomitant pyelolithotomy and compare results with a cohort of patients undergoing laparoscopic pyeloplasty without pyelolithotomy. Materials and Methods We retrospectively reviewed records of 43 patients undergoing transperitoneal laparoscopic Anderson-Hynes dismembered pyeloplasty between December 2012 and July 2018 at our department. Eighteen patients (42%) underwent laparoscopic pyeloplasty with concomitant pyelolithotomy. The results of patients with renal stones were compared with 25 matched patients undergoing laparoscopic pyeloplasty without concomitant renal stones. Demographic data, operative and stone parameters were compared between the groups. Results The groups were similar regarding to demographic characteristics. All operations were completed laparoscopically with no conversions to open surgery. In 3 cases without renal stones and 15 cases with renal stones, transposition of the ureter due to crossing vessels was performed. The mean stone size was 13±5.24 mm, and the median number of stones was 1 (1-18). The success of laparoscopic pyeloplasty with and without pyelolithotomy was 93.3% and 92.9%, respectively, as confirmed by negative diuretic renogram at postoperative 3rd months. Overall stone-free rate after laparoscopic pyelolithotomy was 93.3%. Mean operative time was 222.6765.71 minutes vs. 219.11±75.63 minutes for the pyeloplasty with concomitant pyelolithotomy vs. pyeloplasty, respectively (p=0.88). Conclusions Laparoscopic pyeloplasty with concomitant pyelolithotomy is a safe and effective intervention with associated good cosmetic results and high stone-free rates without significant increase in operative time or complications.

Cirugía intrarrenal retrógrada para el tratamiento de litiasis renal. Experiencia de 63 casos en un centro ambulatorio / Retrograde Intrarenal Surgery for the Treatment of Renal Lithiasis. An Experience in 63 Cases in an Ambulatory Center

Objetivos: El objetivo del estudio fue evaluar nuestra experiencia inicial en cirugía intrarrenal retrógrada para el tratamiento de litiasis renales y determinar si es una cirugía eficaz y segura para realizarse en un centro ambulatorio. Materiales y métodos: Se evaluó a todos los pacientes sometidos a ureterorrenoscopia flexible con láser Holmium en la Clínica Andina de Urología luego de un año de procedimientos. Se determinaron datos demográficos, características de las litiasis operadas, porcentaje libre de litiasis y complicaciones según escala modificada de Clavien. Resultados: Un total de 63 pacientes fueron intervenidos desde marzo de 2017 a marzo de 2018. El tamaño medio de las litiasis urinarias fue de 11,6 mm. En un 93,6% de los pacientes la cirugía se pudo completar sin inconvenientes con un tiempo medio de 44 minutos. El porcentaje global libre de litiasis fue del 76,19%. Un 17,4% tuvo complicaciones generales, sin embargo, solo 2 pacientes requirieron reinternación. Conclusiones: La ureterorrenoscopia flexible es una cirugía mínimamente invasiva, eficaz y segura, con un bajo índice de complicaciones (AU)

Objectives: The aim of this study was to evaluate our initial experience in retrograde intrarenal surgery for the treatment of renal lithiasis and determinate if the surgery is effective and safe to be practice in an ambulatory center. Materials and methods: We recorded all patients who underwent flexible ureterorenoscopy and laser Holmium at Clínica Andina de Urología after one year of surgeries. Demographic information, stones characteristics, stone free rate and complication using Clavien system were gathered. Results: A total of 63 patients underwent flexible ureterorenoscopy from March 2017 to March 2018. Mean stone diameter was 11.6 mm. Surgery was complete in 93.6% of patients with a mean operative time of 44 minutes. Stone free rate was 76.19%. The overall complication rate was 17.4%, nevertheless, only 2 patients were readmitted. Conclusions: IFlexible ureterorenoscopy is a minimally invasive procedure, effective and safe, with a low rate of complications. (AU)

Outcomes of miniaturized percutaneous nephrolitotomy in infants: single centre experience

ABSTRACT Objectives: The present study was aim to evaluate the safety and efficacy of Mini-PNL to treat kidney stones in patients aged <3 years. This is the one of the largest series in the literature in this age group of patients. Material and methods: From May 2012 to April 2016, the medical records of 74 infant patients who underwent mini-PNL for renal stones were reviewed retrospectively. All infants were evaluated with the plain abdominal radiograph, urinary ultrasound, non-contrast computerized tomography and/or intravenous urogram. Pre-operative, intraoperative and post-operative data were analyzed. Results: A total of 74 infant (42 male, 32 female) with a mean age 21.5±8.2 (10-36) months were included in this study. The mean size of the stones was 22.0±5.9 (14-45) mm. A 17 Fr rigid pediatric nephroscope with a pneumatic intracorporeal lithotripsy were used through 20-22 Fr access sheath. The stone-free rate was 84.7% at 1 month after the operation. Mean operative time was 74.0 (40-140) min. Mean fluoroscopy screening time was as 4.3(3.1-8.6) min. Average hospitalization time was 3.8 (2-9) day. Auxiliary procedures were performed to 11(15.3%) patients (7 extracorporeal shock wave lithotripsy, 3 re- percutaneous nephrolitotomy, 1 retrograde intrarenal surgery). No major complication classified as Clavien IV-V observed in study group. Conclusions: Mini-PNL with pneumatic intracorporeal lithotripsy can be performed safely and effectively to manage kidney stones in infants with high stone free rate and low complications.

Anesthetic management of a patient with multiple sclerosis - case report / Controle anestésico de paciente com esclerose múltipla - relato de caso

Abstract Background and objectives: Multiple sclerosis is a demyelinating disease of the brain and spinal cord, characterized by muscle weakness, cognitive dysfunction, memory loss, and personality disorders. Factors that promote disease exacerbation are stress, physical trauma, infection, surgery, and hyperthermia. The objective is to describe the anesthetic management of a case referred to urological surgery. Case report: A female patient, 44 years of age, with multiple sclerosis, diagnosed with nephrolithiasis, referred for endoscopic ureterolythotripsy. Balanced general anesthesia was chosen, with midazolam, propofol and remifentanil target-controlled infusion; sevoflurane via laryngeal mask airway; and spontaneous ventilation. Because the patient had respiratory difficulty presenting with chest wall rigidity, it was decided to discontinue the infusion of remifentanil. There was no other complication or exacerbation of disease postoperatively. Conclusion: The use of neuromuscular blockers (depolarizing and non-depolarizing) is a problem in these patients. As there was no need for muscle relaxation in this case, muscle relaxants were omitted. We conclude that the combination of propofol and sevoflurane was satisfactory, not resulting in hemodynamic instability or disease exacerbation.

Resumo Justificativa e objetivos: Esclerose múltipla é doença desmielinizante do cérebro e da medula espinhal, caracterizada por fraqueza muscular, disfunção cognitiva, perda da memória, alterações de personalidade. Fatores que promovem exacerbação da doença são estresse, trauma físico, infecções, cirurgias, hipertermia. O objetivo é descrever a abordagem anestésica de um caso encaminhado a cirurgia urológica. Relato de caso: Paciente do sexo feminino, 44 anos, portadora de esclerose múltipla, com o diagnóstico de nefrolitíase, é encaminhada a ureterolitotripsia endoscópica. Optou-se por anestesia geral balanceada com midazolam, propofol e remifentanil em infusão alvo-controlada, sevoflurano sob máscara laríngea e ventilação espontânea. Tendo apresentado dificuldade ventilatória por tórax rígido, optou-se por interromper a infusão de remifentanil. Não se registraram outras intercorrências nem exacerbação da doença no pós-operatório. Conclusão: O uso de bloqueadores neuromusculares (tanto despolarizantes como não-despolarizantes) constitui um problema nestes pacientes. Como não havia necessidade de relaxamento muscular neste caso, eles foram omitidos. Concluímos que a associação de propofol e sevoflurano foi satisfatória, não resultando em instabilidade hemodinâmica nem exacerbação da doença.

Tratamiento de la litiasis renal con nefrolitotomía percutánea con láser en la población pediátrica: experiencia inicial / Treatment of kidney stones using percutaneous nephrolithotomy with laser in a pediatric population: an initial experience

Reportar nuestra experiencia inicial de nefrolitotomía percutánea (NLPC) con láser Holmium para el tratamiento de litiasis renal en la población pediátrica. Material y métodos: Estudio retrospectivo descriptivo de pacientes menores de 16 años con litiasis renal que fueron tratados con nefrolitotomía percutánea en el servicio de Urología del Hospital Garrahan en el período comprendido entre agosto de 2013 y marzo de 2015. Resultados: 19 procedimientos en 16 pacientes con un número de 17 unidades renales (UR) con una edad media de 7 años y un rango de 2 a 15 (Tabla 2). Los tipos de litiasis tratadas fueron: litiasis coraliforme en 6 pacientes (37,5%), coraliforme incompleto en 3 pacientes (18,7%), litiasis piélicas mayores de 2 cm en 4 pacientes (25%), litiasis piélicas menores de 2 cm en 2 pacientes (12,5%) y múltiples mayores de 2 cm en 1 paciente (6,25%). Se realizó acceso único en 15 pacientes, en sólo uno se configuró un segundo acceso y se reingresó o se realizó cirugía en dos tiempos en 3 pacientes (todos con litiasis coraliforme completa). La tasa de litiasis residual total fue del 21,1 %, todas ellas en litiasis coraliformes completas. Las complicaciones se observaron en 3 casos (18,7%) y fueron clasificadas como tipo III B en dos pacientes y del tipo I en uno. En los dos primeros se requirió conversión a vía abierta y en el último paciente solo se dejó colocada nefrostomía por 7 días. La internación promedio fue de 2,8 días con un rango de 1 a 15 días. El seguimiento medio fue de 7 meses con un rango de 4 a 13 meses. Conclusiones: La nefrolitotomía percutánea en pediatría es un método con baja morbilidad, que requiere una curva de aprendizaje prolongada y es determinante contar con todo el material necesario para "liberar" al riñón de litiasis urinaria (AU)

The aim of the study was to report our initial experience with percutaneous nephrolithotomy (PCNL) with holmium laser for the treatment of kidney stones in children. Material and methods: A descriptive retrospective analysis was conducted in patients younger than 16 years with kidney stones treated with PCNL at the department of urology of Garrahan Hospital between August 2013 and March 2015. Results: 19 procedures were performed in 16 patients with a number of 17 renal units (RU) and a mean age of 7 years, ranging from 2 to 15 years (Table 2). Types of kidney stones were: Staghorn kidney stones 6 patients (37.5%), partial staghorn kidney stones in 3 patients (18.7%), renal pelvis kidney stones larger than 2 cm in 4 patients (25%), renal pelvis kidney stones smaller than 2 cm in 2 patients (12.5%), and multiple kidney stones larger than 2 cm in 1 patient (6.25%). A single tract was performed in 15 patients, a second tract in only one, and re-entry or a two-step surgery was performed in 3 patients (all with complete staghorn kidney stones). The rate of residual stones was 21.1 %, all of them were complete staghorn stones. Complications occurred in 3 cases (18.7%) and were classified as type III B in two patients and type I in one. In the first two patients conversion to open surgery was necessary and in the remaining patient the nephrostomy was left in place for 7 days. Mean hospital stay was 2.8 days with a range of 1 to 15 days. Mean follow-up time was 7 months with a range of 4 to 13 months. Conclusions: In children PCNL is a procedure with low morbidity requiring a long learning curve. Availability of all the necessary materials is essential to be able to "release" the kidney from the stones (AU)

Percutaneous nephrolithotomy in patients with solitary kidney: a critical outcome analysis

To describe our experience with percutaneous nephrolithotomy (PCNL) in patients with solitary kidneys and analyze factors that can impact on intra-operative bleeding and postoperative complications.

Laparoscopic assisted percutaneous nephrolithotomy for renal pelvis stone in a crossed fused ectopic kidney: a case report

Crossed Renal Ectopia [CRE] is a relatively rare congenital renal anomaly. Management of stones formed within such anomalous renal architecture is a challenge for urological surgeons especially in the fused form of the anomaly [CFRE]. There is an increasing trend for using percutaneous nephrolithotomy [PCNL] in such complicated cases. However, certain anatomical variants of this anomaly will make PCNL technically difficult especially when the path to the diseased kidney is blocked by the normal one. In this clinical report, we present a case of renal pelvis stone in a CFRE patient whose target pelvis position was technically difficult to reach by the fluoroscopy guided PCNL technique alone. To circumvent this difficulty, we successfully made use of the laparoscopic technology to visually navigate our way while creating the tract for the PCNL scope sheath in to the target renal pelvis

Nefrolitotomía percutánea en pacientes con cirugía bariátrica: ¿mayor riesgo de complicación? / Percutaneous nephrolitotomy in bariatric surgery patients. Is there an increased risk of complications

Introduction: To report a patient with a history of bariatric surgery and staghorn calculi of the left kidney, who had a colonic perforation after percutaneous renal surgery. Material and Methods: A 38 years old male patient, with a history of gastric bypass, underwent a left percutaneous nephrolithotomy due to staghorn renal calculi. In the procedure, the colon was incidentally perforated during the percutaneous access. Results: The patient developed a sepsis and fecal material appeared surrounding the nephrostomy tube. A transverse colostomy was performed, with improvement of the sepsis and a spontaneous resolution of the nephro-colonic fistula. Conclusion: Is known that bariatric surgery is associated with the novo urinary lithiasis. Besides, there are anatomical changes in between intraabdominal viscera. Radiological studies and a adequate surgical strategy are fundamental to avoid severe surgical complications in kidney stone disease.

Objetivo: Presentar el caso de un paciente con antecedente de cirugía bariátrica y litiasis renal coraliforme, el cual presentó una perforación colónica luego de una nefrolitectomía percutánea. Material y Métodos: Paciente hombre de 38 años de edad con antecedente de bypass gástrico. Fue sometido a una nefrolitectomía percutánea por litiasis renal izquierda coraliforme, complicada de una perforación colónica no reconocida en forma precoz. Resultados: El paciente evolucionó con cuadro séptico y presencia de material fecaloídeo en la zona de la nefrostomía, por lo que requirió colostomía transversa, con resolución de la complicación séptica y resolución de la fístula nefrocólica. Conclusión: Es sabido que la cirugía bariátrica se asocia a litogénesis urinaria y cambios anatómicos de las relaciones de los órganos abdominales. El estudio radiológico y la adecuada estrategia quirúrgica evitará complicaciones graves en la cirugía de la litiasis renal.

Nefrolitectomía percutánea "Tubeless" con catéter pigtail versus catéter ureteral externalizado por una noche: estudio comparativo, prospectivo y randomizado / Comparison of tubuless percutaneous nephrolithothotomy with pigtail catheter versus one nigth externalized ureteral catheter: comparative, prospective and randomized study

La nefrolitectomía percutánea (NLP) es una técnica establecida para el tratamiento de nefrolitiasis de gran tamaño que finaliza dejando una nefrostomía para hemostasia, drenaje y facilitar una eventual revisión. Nuestro grupo publicó recientemente un estudio prospectivo y randomizado que demostró la factibilidad y seguridad de realizar NLP “tubeless” (sin nefrostomía y con catéter pigtail) en un grupo seleccionado de pacientes (sin litiasis residual ni sangrado intra operatorio significativo, con acceso percutáneo único y tiempo operatorio menor a 2 horas).Objetivo: Comparar el uso de catéter ureteral tipo pigtail versus catéter ureteral externalizado por 24 horas en pacientes sometidos a NLP “tubeless”. Métodos: Sesenta y ocho pacientes sometidos a NLP ¨tubeless” fueron prospectivamente randomizados para el uso de catéter pigtail (Grupo 1) o catéter ureteral externalizado por una noche (Grupo 2). Se evaluó el dolor pos operatorio, estadía hospitalaria, caída del hematocrito y desarrollo de hematomas perirrenales objetivados por tomografía axial computarizada no contrastada. Para el análisis estadístico un p value <0,05 fue considerado significativo. Resultados: Los grupos fueron comparables en edad, distribución de sexo, índice de masa corporal y carga litiásica. No difirieron en dolor pos operatorio ni incidencia de hematomas. El Grupo 1 tuvo una estadía hospitalaria y una caída del hematocrito significativamente mayor. Conclusión: Los resultados sugieren que ambas conductas son factibles y seguras. La mayor estadía hospitalaria del Grupo 1 y la posterior necesidad de cistoscopia para retirar el catéter pigtail favorecen el uso de catéteres ureterales externalizados. Además se validan los criterios utilizados para la aplicación de la técnica tubeless en NLP...

Percutaneous nephrolithotomy (PNL) is an established technique for the management of big renal calculi that finishes leaving a nephrostomy tube to provide hemostasia, drainage and access for a second look when needed. We have recently published a prospective and randomized study demonstrating the feasibility and safety of performing “tubeless” PNL (without nephrostomy and leaving a pigtail catheter) in a selected group of patients (no significant residual lithiasis nor significant intraoperative bleeding, single access and less of 2 hours of surgery).Objective: Compare the use of pigtail catheter versus night-externalized ureteral catheter in patients subjected to “tubeless” PNL. Methods: Sixty eight patients undergoing “tubeless” PNL were prospectively randomized for the use of pigtail catheter (Group 1) or 24 hours-externalized ureteral catheter (Group 2).Postoperative pain, hospital stay length, hematocrit drop and evidence of peri-renal hematomas in non-enhanced computarized tomography were evaluated. For statistical analysis a p value <0.05 was considered significant. Results: Groups were similar in age, sex distribution, body mass index and stone burden. No differences in postoperative pain or incidence of hematomas were observed. Group 1 had a longer hospital stay and a greater hematocrit drop. Conclusion: These results suggest that both alternatives are feasible and safe. The longer hospital stay in Group 1 and the further need of cystoscopy to remove the pigtail catheter favors the use of 24 hours-externalized ureteral catheter. In addition, we validate our intraoperative criteria for performing “tubeless” PNL...

Cirugía percutánea renal bilateral simultánea en decúbito supino: experiencia inicial / Percutaneous bilateral renal surgery in supine position: initial experience

La litiasis renal bilateral voluminosa es un desafío quirúrgico para el endourólogo. La cirugía percutánea bilateral simultánea (CPRBS) es una modalidad aceptada, tanto en adultos como niños, sin embargo existe poca literatura al respecto. Presentamos nuestra experiencia de 3 pacientes (6 unidades renales) en posición de Valdivia-Galdakao. Incluimos el primer reporte mundial de un caso de CPRBS tubeless bilateral en de cúbito supino...

Simultaneous bilateral PCNL (SBPCNL) is a safe procedure and can be used effectively in adults as well as in children. In addition to being cost effective, it involves only a single anesthesia with a shorter hospital stay and faster convalescence. We present our initial experience of 3 cases (6 renal units) in supine position. We include the first report to our knowledge of a tubeless SBPCNL in supine position...

Management of nephrolithiasis in autosomal dominant polycystic kidney disease - a single center experience

To evaluate available options for the management of nephrolithiasis in patients with autosomal dominant polycystic kidney disease [ADPKD]. Case files of all the patients with ADPKD treated in our hospital in the last 18 years were evaluated. Their demographic details, clinical presentations, investigations, treatments, and outcomes were critically analyzed. There were a total of 19 patients [23 renal units] with nephrolithiasis among 452 consecutive cases of ADPKD. Male-to-female ratio was 3.75:1. The mean age of the patients was 43.3 years [range 23 to 60 years]. The most common presentations were pain and hematuria [27.7% each]. Mean serum creatinine was 7.2 mg/ dl [range 0.8-18.1 mg/dl] at presentation. The mean stone size was 115 mm[2] [range 36 to 980 mm[2]]. The majority of the stones were calyceal [n = 10]. Ten renal units [nine patients] required intervention, while the rest were treated conservatively. Treatment offered included open nephrectomy for non-functioning infected kidney [n = 1], extracorporeal shock wave lithotripsy [ESWL, n = 3], ureterorenoscopy [URS, n = 3], and percutaneous nephrolithotomy [PCNL, n = 3]. All patients undergoing URS and PCNL had complete clearance, while those undergoing ESWL had a residual stone. Two failed ESWL patients required an auxiliary procedure [retrograde intrarenal surgery, RIRS] and the other was kept under observation. Mean follow-up after treatment was 4.2 years [one month to six years]. None of the patients had major complications. Careful selection of the endourological procedure can give good results in patients of ADPKD with nephrolithiasis

Cirugía percutánea de la litiasis renal en la era de la litotripsia extracorpórea: experiencia en 301 pacientes / Percutaneous renal surgery: experience in 301 patients

Introduction: Percutaneous renal surgery was introduced more than 20 years ago in urological practice. Extracorporeal Shock Wave Lithotripsy (ESWL) enter the urological scene shortly after. Our objective is to show our experience in percutaneous renal surgery after the introduction of the ESWL in our institution. Material and Methods: Surgical outcomes of 301 patients who underwent percutaneous renal surgery as treatment of renal stones were analyzed. This series begins just before the introduction of ESWL in our unit. Results: Renal pelvis was the most frequent localization with 142 cases (47.2 percent). There were 51 patients with straghorn calculi. 255 (84.7 percent) were stone free after one single procedure. Residual fragments were managed with many methods, until only 16 patients (5.4 percent) had residual fragments. Complications occurred in 26 patients (8.9 percent). There was no mortality. Conclusions: Percutaneous surgery is an important tool in the management of renal stones. In general, renal stones managed with this procedure, are more complex, however the achievement of good results is possible.

Introducción: La cirugía percutánea (CP) de la litiasis renal fue introducida en la urología hace más de 20 años. Poco después lo hizo la litotripsia extracorpórea (LEC). Nuestro objetivo es mostrar la experiencia en CP luego de la introducción de la LEC en nuestro servicio. Material y Métodos: Se analizan en forma retrospectiva los resultados de 301 pacientes operados por CP por litiasis renal. La serie comienza con la adquisición de un litotriptor extracorpóreo en nuestro servicio. Resultados: La localización más frecuente fue la pelvis renal con 142 casos (47,2 por ciento). Se observó litiasis coraliforme en 51 pacientes. Doscientos cincuenta y cinco (84,7 por ciento), quedaron libres de litiasis con un procedimiento. La litiasis residual fue tratada con diversos métodos, para un total final de 16 pacientes con fragmentos residuales (5,4 por ciento). Ocurrieron complicaciones en 26 pacientes (8,9 por ciento). No hubo mortalidad. Conclusiones: La cirugía percutánea de la litiasis renal es un procedimiento que debe formar parte importante en la resolución de la litiasis renal. En general las litiasis tratadas son más complejas, sin embargo, los resultados son excelentes.

Fístula arteriovenosa pós-nefrolitotripsia percutânea / Arteriovenous fistula after percutaneous nephrolithotomy

Fístula arteriovenosa (FAV) é uma rara complicação pós-nefrolitotripsia percutãnea (NLP). Apresentamos o caso de um paciente de 70 anos, sexo masculino, que apresentou sangramento maciço após NLP, tratado por angioembolização renal superseletiva com implante de stent. Após a embolização, houve resolução do sangramento. FAV é uam complicação incomum da NLP, que pode ser tratada com sucesso com angioembolização.

Arteriovenous fistula (AVF) is a rare complication after percutaneous nephrolithotomy (PNL). We present the case of a 70-year-old male who had massive bleeding after NLP, angioembolização treated by superselective renal stent implantation. After embolization, there was resolution of bleeding. AVF is uam uncommon complication of NLP, which can be treated successfully with angioembolização.

Nefrolitotomía percutánea en decúbito dorsal / Percutaneous nephrolithotomy in supine position: surgical technique

Mostramos la técnica de acceso percutáneo en decúbito dorsal, que permite el tratamiento endourológico de litiasis renal voluminosa o compleja, así como de otras patologías pieloureterales. Incluimos nuestra experiencia reciente en cirugía percutánea tubeless.

We review the surgical technique of percutaneous nephrolithotomy in supine positionand evaluate its advantages for the management of voluminous or complex renal calculialing with other pyeloureteral pathologies. We include our recent experience with the tubeless technique.

Cirugía renal percutánea en decúbito dorsal: experiencia inicial y comparación con técnica en prono / Percutaneous renal surgery in the supine oosition: initial experience and a comparison with the prone technique

Introducción: La cirugía renal percutánea en decúbito dorsal modificado presenta ventajas importantes a la postura tradicional (decúbito prono) con tasas de éxito comparables, destacando un menor riesgo anestésico. El objetivo de esta revisión es mostrar la experiencia en cirugía percutánea endecúbito dorsal y comparar los resultados con la técnica clásica. Materiales y Métodos: Análisis retrospectivo de la cirugías percutáneas realizadas en el HospitalClínico San Borja Arriarán en decúbito prono por litiasis renal (NLP) y estenosis pieloureteral (EPU)entre enero de 2002 y agosto de 2005 y revisión prospectiva de los pacientes operados en cualquier posición desde esa fecha en adelante. La técnica utilizada en los pacientes operados en supino fue la descrita previamente por Valdivia-Uría y cols. Resultados: Se operaron un total de 122 pacientes. Sesenta y un pacientes fueron operados en decúbito prono por varios médicos del Servicio hasta agosto de 2005, mes en que se realizó por primera vez una NLP en decúbito dorsal. Desde entonces, y hasta diciembre de 2007 se operaron 57unidades renales en esta posición a 56 pacientes, todas efectuadas por un cirujano (B.S.). Los parámetros pre operatorios fueron comparables en ambos grupos, salvo el porcentaje de litiasis > a2 cm., que fue mayor en el grupo supino. Destaca un menor tiempo operatorio del grupo supino(p<0.05) y resultados comparables en cuanto al porcentaje de unidades renales libres de litiasis. Las complicaciones tampoco presentaron diferencia significativas entre los grupos. Conclusión: La cirugía percutánea en decúbito dorsal es una técnica segura y efectiva. Permite acceso a la vía urinaria alta en casi todos los casos, brinda ventajas anestésicas y da posibilidad de acceso simultáneo a la vía urinaria baja, a la vez ahorra tiempo operatorio e insumos y posee una tasa de éxito al menos comparables a la técnica clásica en prono.

Introduction: Percutaneous renal surgery (PRS) in dorsal decubitus harbors significant advantages to the traditional prone position, with comparable outcomes, emphasizing a lower anesthetic exposition time. The aim of this review is to present our experience in PRS in dorsal decubitus and compare it with our observed results with the classic technique. Materials and Methods: A comparison of PRS techniques was performed . Data for the study was collected from a retrospective analysis of cases of PRS performed in the Hospital San Borja Arriaran in prone position between January 2002 and August 2005 and a prospective review of patients operated in dorsal position from August 2005 to December 2007. Valdivia´s technique was deployed for patients operated by dorsal decubitus. Results: A total of 122 patients were operated. Sixty-one in prone position by several surgeons and 57 renal units were treated in 56 patients with Valdivia´s technique, all of them by a single surgeon (B.S.). Pre-operative parameters were comparable in both groups, except the percent stones> 2 cm. Less operative time was verified in the supine group (p <0.05) with comparable results in terms of stone free rate. There were not significant differences between both groups, in terms of complications. Conclusion: Percutaneous renal surgery in dorsal decubitus is safe and effective. It allows access to the upper urinary tract in almost all cases, offers potential anesthetic advantages and provides simultaneous access to the lower urinary tract. These features save time and surgical supplies while keeping a comparable success rate when compared to the classical technique.

Catéter ureteral incrustado y litiasis coraliforme: reporte de un caso / Severely encrusted ureteral stents with a large associated stone burden: case report

Presentamos el caso de un paciente de 61 años, con historia de urolitiasis a repetición. Luego de la instalación de catéteres doble J en forma bilateral, se pierde de controles reapareciendo luego de 14 años. El estudio imagenológico demuestra una nefrolitiasis coraliforme completa izquierda y parcial a derecha, asociada a incrustación de ambos catéteres. Describimos el manejo exitoso de los catéteres incrustados asociados a litiasis, que requirieron una aproximación endourológica a través de cirugía percutánea. La nefrolitotomía percutánea permite el manejo exitoso de un catéter severamente incrustado asociado a una masa de cálculos, incluso en aquellos casos bilaterales.

We review our recent experience with encrusted retained ureteral stents associated with a large stone burden in a patient of 61 years old as well as current endoscopic options available for management. We described the successful management of a retained encrusted stent with endourological procedures. Percutaneous nephrolithotomy is a good option for treating a severely encrusted stent and the associated stone burden.