Does ureteral access sheath affect the outcomes of retrograde intrarenal surgery: a prospective study.

OBJECTIVES: To evaluate whether or not using a ureteral access sheath (UAS) affects the perioperative outcomes after retrograde intrarenal surgery (RIRS) performed in patients with renal stones. MATERIAL AND METHODS: An observational study was carried out using data of 60 patients who underwent RIRS with the diagnosis of renal stones <2 cm between February 2017 and November 2017 at our institution. The data of the 60 patients were registered prospectively during the study period. Patients were divided into two groups based on whether a UAS was used (Group 1-30 patients) or not (Group 2-30 patients) during RIRS. Perioperative outcomes and complications were collected and analyzed. RESULTS: The stone burdens of the patients in Group 1 and in Group 2 were 76.59 mm2 and 62.19 mm2, respectively (p = .160). There was no statistically significant difference in SFR (p = 1.000), complication rates (p = .418), and operation time (p = .411) between both groups, except for the fact that postoperative pain intensity levels using the VAS were slightly higher in Group 2 (4.13 ± 2.37 vs. 5.33 ± 1.89, p = .064). CONCLUSIONS: In the present study, we showed that similar success and acceptable complication rates can be achieved without using UAS compared to using UAS during RIRS. However, using UAS may provide an advantage in reducing postoperative pain after RIRS.

Comparison of scoring systems for predicting stone-free status and complications after retrograde intrarenal surgery.

PURPOSE: To compare the effectiveness of scoring systems in predicting stone-free rates (SFR) and complications following retrograde intrarenal surgery (RIRS). MATERIALS AND METHODS: We retrospectively analyzed 280 patients who underwent RIRS for kidney stones between 2016 and 2019. The Resorlu-Unsal Stone score (RUSS), Modified Seoul National University Renal Stone Complexity (S-ReSC) score, and R.I.R.S. scoring system score were calculated for each patient who was enrolled in the study. Subsequently, stone scoring systems were compared as to their predictive capability for SFR using receiver-operating characteristic curves. Furthermore, multivariate analysis was done to determine whether the scoring systems associated with SFR and complications. RESULTS: The median patient age was 44 (35--56). The median RUSS, S-ReSC, and R.I.R.S scores were 0 (0-1), 1(1-2), and 6 (5-7), respectively. The overall SFR was 76.7%. The R.I.R.S. scoring system was found to have a higher predictive value in predicting postoperative SFR than the other two scoring systems (p < 0.001, AUC = 0,816). RUSS, R.I.R.S. score, and stone size were found to be independent predictive factors for SFR (p = 0.049, p = 0.024, p = 0.033, respectively). Complications were observed in 3.2%(9/280) of patients. Stone scoring systems were not statistically associated with complications. Operation duration was the only independent risk factor for complications (p = 0.010). CONCLUSIONS: The R.I.R.S. scoring system was found to have a higher predictive value than RUSS and S-ReSC to predict SFR following RIRS in our study. However, none of the stone scoring systems was directly proportional to complications of RIRS.

Predictive Factors for Spontaneous Stone Passage and the Potential Role of Serum C-Reactive Protein in Patients with 4 to 10 mm Distal Ureteral Stones: A Prospective Clinical Study.

PURPOSE: We investigated possible predictive factors for spontaneous stone passage and the potential role of serum C-reactive protein and white blood count in patients with 4 to 10 mm distal ureteral stones. MATERIALS AND METHODS: A total of 251 patients who presented with renal colic secondary to distal ureteral stone were included in study. Patients were grouped according to spontaneous stone passage. Serum C-reactive protein, white blood count and other possible factors were investigated for their potential predictive value for spontaneous stone passage at a followup of 5 weeks. Potential predictive factors for spontaneous stone passage were evaluated with univariate and multivariate analyses. ROC curve analysis was performed to find an optimal cutoff value for serum C-reactive protein according to spontaneous stone passage. Statistical significance was considered at p <0.05. RESULTS: Spontaneous stone passage was observed in 135 patients (53.8%) in group 1 while 116 (46.2%) in group 2 did not expel the stone spontaneously. Median stone size was 5.7 mm. Stone size, serum C-reactive protein and white blood count were significantly higher in group 2 than in group 1. The number of patients with hydronephrosis and the number with spontaneous stone passage history were significantly lower in group 2 compared to group 1. The cutoff value of serum C-reactive protein provided by ROC analysis was 0.506 mg/l. Time to spontaneous stone passage was significantly higher in patients with serum C-reactive protein above the threshold and in patients with ureteral stones greater than 6 mm. CONCLUSIONS: Stone size, previous spontaneous passage, hydronephrosis, serum C-reactive protein and white blood count can be used to predict spontaneous stone passage in patients with 4 to 10 mm distal ureteral stones. A serum C-reactive protein level of 0.506 mg/l can serve as a cutoff value to predict spontaneous stone passage.

Is routine ureteral stenting really necessary after retrograde intrarenal surgery?

OBJECTIVES: To investigate the situations in which ureteral double-J stent should be used after retrograde intrarenal surgery (RIRS). PATIENTS AND METHODS: Patients with no ureteral double-J stent after RIRS constituted Group 1, and those with double- J stent after RIRS constituted Group 2. Patients' age and gender, renal stone characteristics (location and dimension), stone-free status, VAS score 8 hours after surgery, post-procedural renal colic attacks, length of hospitalization, requirement for re-hospitalization, time to rehospitalization and secondary procedure requirements were analyzed. RESULTS: RIRS was performed on 162 renal units. Double-J stent was used in 121 (74.6%) of these after RIRS, but not in the other 41 (25.4%). At radiological monitoring at the first month postoperatively after RIRS, complete stone-free status was determined in 122 (75.3%) renal units, while residual stone was present in 40 (24.6%). No significant differences were observed between the groups in terms of duration of fluoroscopy (p = 0.142), operation (p = 0.108) or hospitalization times (p = 0.798). VAS values determined routinely on the evening of surgery were significantly higher in Group 1 than in Group 2 (p = 0.025). Twenty-eight (17.2%) presentations were made to the emergency clinic due to renal colic within 1 month after surgery. Double-J catheter was present in 24 (85.7%) of these patients. CONCLUSIONS: Routine double-J stent insertion after RIRS is not essential since it increases costs, morbidity and operation time.

Categorizing intraoperative complications of retrograde intrarenal surgery.

PURPOSE: To review our intraoperative complications of retrograde intrarenal surgery (RIRS) for kidney calculi and stratify these complications according to the modified Satava classification system (SCS). PATIENTS AND METHODS: 230 patients (119 males, 111 females) who underwent RIRS because of kidney calculi were analyzed. We documented and stratified the intraoperative complications according to the modified SCS. There are four grades for this classification: grade 1 complications include events without consequences for patients; grade 2a complications include events that could be treated with endoscopic surgery intraoperatively; grade 2b complications include events which were treated with endoscopic treatment in another session, and grade 3 describes the events requiring laparoscopic or open surgery. RESULTS: Mean age was 39.1 years (range 1-78). The stone-free rate after one session was 81%. Intraoperative complications were recorded in 30.4% of the patients. According to the modified SCS, grade 1 complications were documented in 15.9%, grade 2a complications were documented in 5.6%, and grade 2b complications were documented in 8.9% of the patients. Grade 3 complications were not detected in any of the patients. CONCLUSION: In our opinion, the modified SCS can facilitate patients to understand the safety of this surgery and can make it easier to compare the results of different institutes and surgeons.

Is the Mayo Adhesive Probability Score Predictive in Patients Undergoing Percutaneous Nephrolithotomy?

Introduction: Mayo Adhesive Probability (MAP) score was developed as a means to predict the presence of adherent perinephric fat. Our aim was to determine the predictive value of the MAP score on surgical outcomes in patients undergoing standard adult percutaneous nephrolithotomy (PCNL). Materials and Methods: We retrospectively analyzed the data from 130 renal units that underwent PCNL between January 2022 and 2023. MAP scores 0-2 were classified as low, whereas MAP scores 3-5 were classified as high. The impact of the MAP score on perioperative and postoperative outcomes was studied. All statistical analyses were performed using SPSS 24.0 for Windows. Results: The median age of the patients at the time of surgery was 48 (21) years, with a female-to-male ratio of 1:1.82. The median MAP score was 2 (2), with 43.8% of patients falling into the high MAP score group. Advanced age, hypertension history, low estimated glomerular filtration rate (eGFR) levels, and low renal parenchymal thickness were significantly higher in the high MAP score group (P = .010, P = .004, P = .001, and P = .005, respectively). Female patients had a significantly higher MAP score of 0 (P = .021). Operation time, postoperative hematocrit decrease, blood transfusion rate, postoperative fever rate, hospitalization, and stone-free rates were comparable between the low and high MAP score groups (P = .535, P = .209, P = .313, P = .289, P = .281, and P = .264, respectively). Gender and eGFR levels were shown to be significant predictors of a MAP ≥3 (P = .004 and P = .003, respectively). Conclusion: The present study showed that the MAP score groups had similar perioperative and postoperative results. Low eGFR levels and the male gender were associated with MAP score ≥3. To determine the predictive MAP score value for PCNL outcomes, more prospective studies are needed.

Transrectal shear wave elastography for detection of prostate cancer.

AIM: To evaluate the value of transrectal shear-wave-elastography(SWE) to differentiate benign and malignant tissues in patients with suspected prostate cancer. MATERIALS AND METHODS: Between January and May 2019, the study was designed as a prospective clinical study. The SWE value of 504 cores measured before biopsy and the pathology result of each core were used in the statistical analysis. The SWE values of benign and malignant cores were compared according to pathology results. ROC analysis was used to calculate the best cut-off SWE value for differentiating malignancy from benign tissues. Specificity, sensitivity, negative, and positive predictive values (NPV, PPV) were also calculated for cut-off value. RESULTS: Prostate cancer was detected in 74 (14.7%) of 504 core biopsies. The mean SWE values were found significantly higher in malignant cores (71.1 kPa) than benign cores (42.3 kPa) (p < 0.001). Cores with gleason score 7 had a significantly higher SWE value than Gleason score 6 (p = 0.009). The cut-off value to differentiate malignancy and area-under-curve were calculated 35.85 kPa, 0.733, respectively. The sensitivity, specificity, NPV, and PPV were 83%, 49%, 78%, and 95%, respectively for 35.85 kPa value. CONCLUSIONS: The malignant tissues have significantly higher SWE values. Also high gleason score was shown to be associated with high SWE values. To predict the prostate cancer, the difference of SWE values of between benign and malignant tissues has high sensitivity. In the near future, to prevent unnecessary prostate biopsies, SWE will be part of the standard protocol for prostate imaging.

What Is the Ideal Treatment for 20-30 mm Kidney Stones? Comparative Outcomes of 1197 Patients.

Background: The purpose of this study is to compare the efficacy and safety of extracorporeal shockwave lithotripsy (SWL), retrograde intrarenal surgery (RIRS), mini-percutaneous nephrolithotomy (mPNL), and standard-percutaneous nephrolithotomy (stPNL) for the treatment of 20-30 mm kidney stones. Methods: The records of 1197 patients (SWL = 149, RIRS = 205, mPNL = 525, and stPNL = 318) from 8 centers were reviewed retrospectively. Four procedures were compared for stone-free rates (SFRs), auxiliary treatment, and associated complications. Results: Initial SFRs were 43.6%, 54.6%, 86.7%, and 87.7% in SWL, RIRS, mPNL, and stPNL, respectively (P < .001), whereas the final SFRs were 71.8%, 80%, 90.5%, and 89.6% (P < .001). The rate of auxiliary treatment in the groups was 38.3%, 26.8%, 5%, and 4.4%, respectively (P < .001). The initial and final SFRs in the mPNL and stPNL groups were higher than those in SWL and RIRS groups (P < .001). The rate for auxiliary treatment was lower in the mPNL and stPNL groups (P < .001). The operation time was longer in the RIRS group (P = .005). According to the Clavien-Dindo classification, the complication rate in the SWL group was lower than that in the surgical approaches (P < .001); however, no statistical difference was detected between RIRS, mPNL, and stPNL groups. mPNL and stPNL had a higher success rate than RIRS or SWL for treating 20-30 mm kidney stones. Conclusion: In the treatment of 2-3 cm renal stones, RIRS and PNL were more effective than SWL to obtain a better SFR and less auxiliary treatment rate. Compared with RIRS, mPNL and stPNL provided a higher SFR with similar complication rates.

Predicting participation in and successful outcome of a penile rehabilitation programme using a phosphodiesterase type 5 inhibitor with a vacuum erection device after radical prostatectomy.

UNLABELLED: Study Type--Therapy (case series) Level of Evidence 4. What's known on the subject? and What does the study add? The role of the vacuum erection device (VED) has increased with its use in combined therapy with a phosphodiesterase type 5 inhibitor (PDE5i) for penile rehabilitation after radical prostatectomy (RP) and radiotherapy. The advantages of the VED are non-invasive, cost-effective, and a possibility of preventing shrinkage of penis length. Albeit current widespread use of penile rehabilitation programmes for post-RP erectile dysfunction, independent predictors for the rehabilitation participants, as well as for its treatment success have not been fully investigated. In the present study, we have added several new predictors for rehabilitation participation, e.g. African-Americans and higher preoperative sexual function. Conversely, higher preoperative PSA concentrations and the presence of positive surgical margins were predictors for avoidance of rehabilitation. Notably, there was a primary surgeon difference, which had a trend for predicting outcome of the rehabilitation among the participants, implying their surgical technique and follow-up might influence success of the rehabilitation. OBJECTIVES: • To investigate baseline demographic and clinicopathological characteristics of men who participate in our penile rehabilitation programme after radical prostatectomy (RP). • To determine predictors for participation in rehabilitation, as well as successful rehabilitation outcome using multivariable logistic regression analyses. PATIENTS AND METHODS: • We analysed data on 2345 consecutive patients who underwent RP between 2001 and 2009 in our institution. • The decision to participate in penile rehabilitation using phosphodiesterase type 5 inhibitor (PDE5i) with a vacuum erection device (VED) was based on the patient's choice after post-RP discussions. • Rehabilitation success was defined using the following criteria: (i) patients who continued the penile rehabilitation programme and did not switch treatment from PDE5i to other erectile aids, (ii) success was noted in men who had an Expanded Prostate Cancer Index Composite (EPIC) sexual function (SF) score of >75% of the patient's baseline EPIC score, and (iii) patients who answered that they achieved adequate erections with a PDE5i. • Logistic regression analysis was used to identify factors associated with treatment participation and its success. RESULTS: • Of 676 patients, 354 (53.2%) men participated in a penile rehabilitation programme. Among 329 rehabilitation participants with available data, 96 (29.2%) had treatment success. • In multivariable regression analysis, African-Americans (odds ratio [OR] 3.47, P < 0.001), and higher preoperative SF (OR 1.02, P < 0.001) were associated with participation in rehabilitation. • Higher preoperative PSA concentration (OR 0.50, P = 0.004) and presence of positive surgical margins (OR 0.68, P = 0.042) were found to be independent predictors for non-participation in the rehabilitation. • For rehabilitation outcomes, being older at surgery (OR 0.93, P = 0.001) and adjuvant therapy (OR 0.34, P = 0.047) had a negative association with successful outcome. • There was a trend in the relationship between primary surgeon and rehabilitation success (OR 1.05, P = 0.053) CONCLUSIONS: • Those patients who have risk factors, e.g. adverse prostate cancer features, need to be carefully counselled and encouraged to participate in the penile rehabilitation programme. • Clinicians could lead patients toward successful outcomes if appropriate surgical techniques and rehabilitation are provided.

Is there any advantage in the use of absorbable sutures in congenital penile curvature surgery performed in childhood?

OBJECTIVE: To compare the long-term outcomes of corporeal plication using absorbable versus nonabsorbable sutures for the treatment of congenital penile curvature in childhood. MATERIALS AND METHODS: Forty seven children who underwent congenital penile curvature repair between 11 and 140 months of age were included in the study. All children were operated on using the incisional plication technique and were divided into two groups: Absorbable-polyglactine (PLG, n=23, 48.93%) and nonabsorbable-polypropilen (PP, n=24, 51.06%) according to the suture material used for plication. Surgical outcomes were compared between groups. RESULTS: Mean follow-up period was 19.02±4.66 months. There was no significant difference between the mean age of the children in two groups included in the study (PLG=41.39±34.63 months vs PP=53.66±37.42 months, p=0.250). There was no significant difference in penile straightening degree between the two groups in the postoperative follow-up (PLG=27.39±6.88 vs PP=31.08±6.38, p=0.06). Similarly, there was no significant difference between two groups in terms of postoperative curvature recurrence (p=0.681). However, palpable suture knots in the plication area was significantly higher in the PP group in the postoperative period (25.0% vs 4.3%, p=0.047). CONCLUSION: The use of absorbable sutures in congenital penile curvature surgery in childhood has similar success rates with the use of nonabsorbable sutures and provides lower complications that are secondary to nonabsorbable sutures.

Is combined topical-local anesthesia technique adequate for visual internal urethrotomy in the treatment of traumatic posterior urethral strictures and prostatic urethral stenoses?

BACKGROUND: To compare the effectiveness of spinal anesthesia (SA) and the combination of intraurethral topical instillation of 2% lidocaine + intraurethral local visual injection anesthesia (T + LIA) for visual internal urethrotomy (VIU) in the treatment of traumatic posterior urethral strictures and prostatic urethral stenoses. METHODS: In this study, the results of 178 patients who underwent visual internal urethrotomy for posterior urethral strictures and prostatic urethral stenoses secondary to trauma in our clinic between October 2018 and January 2020 were analyzed retrospectively. Patients were divided into two groups as combined T + LIA (n=146, 82.08%) group and SA (n=32, 17.97%) group according to the type of anesthesia used. The preoperative clinical data and postoperative results of the patients were analyzed and compared between the groups. RESULTS: The mean age of the patients was 67.99±10.87 years and the mean follow-up was 5.32±3.27 months. The median age of the patients in the T + LIA group was significantly higher than that of the patients in the SA group (p=0.033). There was no statistically significant difference between the groups regarding preoperative Q-max value (p=0.931). Similarly, the rate of postoperative improvement in the Q-max values of the patients was similar between the groups (p=0.572). The presence of postoperative complications and recurrence rates were similar between the groups (p=0.879 and p=0.904, respectively). CONCLUSION: Compared to spinal anesthesia, T + LIA anesthesia is a safe and effective technique for visual internal urethrotomy in treating traumatic posterior urethral strictures and prostatic urethral stenoses, with a high rate of success and acceptable rate of complications.

Early surgical repair or conservative treatment? Comparing patients with penile fracture concerning long-term sexual functions.

BACKGROUND: To compare the patients who underwent early surgical repair of penile fracture, which is one of the urological emergencies, and patients who recovered with conservative treatment concerning long-term sexual functions. METHODS: The data of 42 patients who applied to our clinic with penile fracture between January 2010 and January 2020 were retrospectively analyzed. The patients were categorized into two groups as early operated and followed-up conservatively. The preoperative and postoperative findings of the patients were compared with the International Erectile Function Scale (IIEF-6) scores in the long-term follow-up. RESULTS: The median age of the patients was 35 (20-65) years and the median follow-up period was 52 (8-120) months. The postoperative mean IIEF-6 score of the patients was 22.98±6.52. There was no significant difference between the surgical and the conservative groups concerning postoperative complications (p=0.460). In the follow-up period, the presence of palpable plaque on the rupture area was significantly higher in the conservative group (p=0.041). However, there was no significant difference between the groups concerning IIEF-6 scores (p=0.085). CONCLUSION: Although there is no significant difference in long-term IIEF-6 scores between the two groups, the rate of palpable plaque formation is higher in patients followed-up conservatively. Therefore, early surgical repair should be considered in the foreground, especially in patients with a large rupture area.

Urinary incontinence as a cause of depression and sexual dysfunction: Questionnaire-based study.

INTRODUCTION: Urinary incontinence is a severe and common health problem. In this study, we aimed to assess severity of sexual dysfunction and depression in patients with urinary incontinence. MATERIALS AND METHODS: The study has been conducted between 2015 and 2017. Age, body mass index, accompanying health problems, Over Active Bladder (OAB) symptom score, Type of urinary incontinence, Beck Depression Scale were assessed for all patients. International Index of Erectile Function-5 (IIEF-5) was used for male patients in order to assess sexual dysfunction. Index of Female Sexual Function (IFSF) and Female Sexual Distress Scale (FSDS) were used in female patients in order to assess sexual dysfunction. RESULTS: 33 patients have been included in the study (Male-12: Urge-10/Stress-1/Mixed-1/Female-21: Urge-10/Stress-6/Mixed-5). Mean age of all patients was 47.9 (Male-49.3/Female-47.2). Mean Body Mass Index for all patients was 23.2 (Male-25.9/Female-21.8). Mean OAB score was 24.3 for all patients (Male-27.5: Urge-28.6/Stress-17/Mixed-27/Female-22.5: Urge-24.2/Stress:21.3/Mixed-20.6). Mean Beck Depression Result for all patients was 20.9 (Male-18.5: Urge-20.2/Stress-9/Mixt-11/Female-22.4: Urge-19.1/Stress-20.3/Mixed-31.6). Mean IIEF-5 score for male patients was 39.5 (Urge-41.4/Stress-55/Mixed-5). Mean IFSF score for female patients was 19.9 (Urge-17.9/Stress-21.3/Mixed-22.4) and mean FSDS score for female patients was 22.1 (Urge-22.3/Stress-23.1/Mixed-20.8). DISCUSSION: Most of the patients that have been included in the study were diagnosed as urge incontinence. When assessing the OAB scores, they were higher in urge incontinence group. Beck depression results showed higher scores in female patients and it was higher in urge group of male patients and mixt group of female patients. Sexual dysfunction rates were found to be higher for both genders.

Retrograde intrarenal surgery or percutaneous nephrolithotomy: Which one is more effective for 1-2 cm renal stones in pediatric patients? / Cirugía intrarrenal retrógrada o nefrolitotomía percutánea: ¿Cuál es más efectiva para litiasis de 1-2 cm en pacientes pediátricos?

INTRODUCTION: Urinary stone diseaseis less common in pediatric age group and it has anincreasing incidence. In this study, our hypothesis is toevaluate if one of the techniques, PNL or RIRS is superiorthan the other in terms of stone free status (SFR), fluoroscopytime (FT), operation time (OT), complication rate(CR), JJ stent insertion rate, and hospitalization duration(HD) in children. METHODS: Between 2013 and 2016, 74 patients(under 18 years- old) were operated for the treatmentof renal stones between 1-2cm size. 37 patientswere male (50%) and 37 of them (50%) were female.The study shows the experience of a single center. Dataof the patients who underwent (surgery) were recorded. RESULTS: SFR was not different in both groups in shortand long terms follow up, but hgb drop, FT, OT, andHD were detected to be worse in PNL group. Therewas lower complication rates for RIRS group comparing to PCNL group according to Clavien classification butgrade I complications were higher in RIRS group. CONCLUSION: Although PNL is a cheaper treatmentmethod, RIRS has less creatinine change, less FT, lessOT, less CR, less HT with similar SFR for 1-2cm renalstones in children. Long term SFR were 83.8% for RIRSand 86.5% for PCNL. RIRS is a treatment of choice inchildren with 1-2 cm renal stones as it has more advantagesbut the costs must be considered.

INTRODUCCIÓN: La enfermedad litiásica es menos frecuente en el grupo de edad pediátrica y tiene una incidencia creciente. En este estudio, nuestra hipótesis es evaluar si una de las técnicas, NLP o CIR, es superior a la otra en términos de estatus libre de litiasis,tiempo de fluoroscopia, tiempo quirúrgico, tasa de complicaciones,tasa de inserción de catéter DJ, y duración de la hospitalización en niños.MÉTODOS: Entre 2013 y 2016, 74 pacientes (por debajo de 18 años de edad) fueron intervenidos para tratamiento de litiasis entre 1-2 cm. 37 pacientes eran varones (50%) y 37 mujeres (50%). El estudio muestra la experiencia de un único centro. Se recogieron los datosde los pacientes sometidos a cirugía.RESULTADOS: La tasa de pacientes libres de litiasis no fue diferente entre los grupos a corto y largo plazo, pero el descenso de la hemoglobina, tiempo de fluoroscopia, tiempo operatorio y de hospitalización fueron peores en el grupo de NLP. Hubo una menor tasa de complicaciones en el grupo de CIR en comparación con el de NLP de acuerdo con la clasificación de Clavien, aunque las complicaciones de Grado I fuero mayores en el grupo de CIR.CONCLUSIONES: Aunque la NLP es un tratamiento más barato, la CIR tiene menor cambio de la Creatinina, menor tiempo de fluoroscopia y menor hospitalización con una tasa de libres de litiasis similar paralitiasis de 1-2 cm en niños. Las tasas de libres de litiasis a largo plazo fueron 83,9% para CIR y 86,5% para NLP. La CIR es un tratamiento de elección en niños con litiasis renales de 1-2 cm porque tiene más ventajas, pero deben considerarse los costes.

Predictive factors of bleeding among pediatric patients undergoing percutaneous nephrolithotomy.

The purpose of this study is to determine the perioperative risk factors for increased blood loss in children undergoing percutaneous nephrolithotomy (PCNL).We retrospectively reviewed the data on pediatric patients who had undergone PCNL for stone disease in our department. Blood loss estimation was quantified by measuring the changes in hematocrit plus the volume of red blood cells transfused. Univariate and multivariate linear regression analyses were performed to evaluate risk factors associated with increased blood loss after pediatric PCNL. Variables included patient, stone, and treatment parameters. The study group consisted of 105 renal units in 97 children with a median (interquartile range) age of 5 (3-9) years. On univariate linear regression analysis female gender (p = 0.030), absence of hydronephrosis (p = 0.013), increasing stone burden (p = 0.002), staghorn stone type (p = 0.013), multi-tract access (p < 0.001), and prolonged operative time (p < 0.001) were significantly associated with increased blood loss after pediatric PCNL. However, multivariate linear regression analysis demonstrated that the only independent risk factors for increased blood loss following pediatric PCNL were degree of hydronephrosis (B -1.329, 95% CI -2.451 to -0.208, p = 0.021), number of tracts (B 2.545, 95% CI 0.221-4.869, p = 0.032), and operative time (B 0.031, 95% CI 0.008-0.053, p = 0.007). Identifying pediatric patients at increased risk of bleeding following PCNL is crucial to minimize morbidity and hospital stay, and thus, the cost of treatment. Our study demonstrated that degree of hydronephrosis, number of tracts and operative time are important factors in reducing blood loss during pediatric PCNL.

Does the use of fluoroscopy really affect the success rate of retrograde intrarenal surgery?

INTRODUCTION: Fluoroscopy is used for access sheath insertion and postoperative control during retrograde intrarenal surgery (RIRS) operation but with this technique both patient and operation team are exposed to radiation. The use of fluoroscopy is disadvantage for both patient and surgeon. Considering results of recent studies, it is clearly seen that fluoroscopy doesn't affect the success and complication rates of RIRS. In this study, we aimed to compare the results of both fluoroscopy and fluoroscopy-free groups, to show if there is a significant difference. METHODS: 385 patients were included in the study and they were divided into two groups. 284 patients were in Group I where fluoroscopy was used. 101 patients were in Group II and fluoroscopy was not used The success rates of primary operation and final success rates were compared. Data from both groups were evaluated objectively using classification systems and imaging methods. RESULTS: Success rates (primary and final) were higher in Group II, and that can be attributed to experience gained over time. Complication rate was lower and success rate was higher in fluoroscopy-free group. According to multivariate analysis, It is clear that the stone dimension is the foreground of the factors that influence the success, and the effect of the stone location is also observed. CONCLUSION: When considering the comparison of success and complication rates between two groups, it is clearly understood that the use of fluoroscopy has not a positive effect on results. According to the outcomes of our study, fluoroscopy-free RIRS can be performed with safe and high success rates. This outcome also leads an important point for avoiding unnecessary radiation exposure.

Risk Factors of Infectious Complications after Flexible Uretero-renoscopy with Laser Lithotripsy.

PURPOSE: To determine the perioperative risk factors for postoperative infections among patients undergoing flexible uretero-renoscopy with laser lithotripsy (FURSLL). In addition, the resistance patterns of pathogens isolated from positive preoperative urine cultures were investigated. MATERIALS AND METHODS: We retrospectively reviewed data from 492 consecutive patients who had undergone FURSLL for stone disease in our department. Postoperative infection was defined as fever (? 38°C) with pyuria (? 10 white blood cells per high power field), or systemic inflammatory response syndrome, or sepsis. Pre-operative and intra-operative characteristics between patients with and without postoperative infectious complications were compared using univariate analyses. Significant variables on univariate analyses were included in a multivariatelogistic regression analysis to evaluate risk factors associated with postoperative infection following FURSLL. RESULTS: 42 (8.5%) of 492 patients had postoperative infectious complications after FURSLL. 59 (12%) of 492 patients had a positive preoperative urine culture. 19 (32.2% of 59) patients had multidrug resistance (MDR) isolates recovered from positive preoperative urine cultures. 75% (9/12 cultures) of the positive preoperative urine cultures of patients in whom a postoperative infectious complication developed consisted of gram-negative pathogens. On multivariate analysis positive preoperative MDR urine culture (OR:4.75;95%CI:1.55-14.56; P = .006) was found to be significant with the dependent variable as the postoperative infectious complications despite appropriate preoperative antibiotic therapy. CONCLUSION: We found that positive preoperative MDR urine culture is a significant risk factor for infectious complications after FURSLL. Our findings point to the need for further research on assessment of risk factors forMDR infections to reduce the rate of postoperative infectious complications.

Pneumatic lithotripsy for large ureteral stones: is it the first line treatment?

OBJECTIVE: To evaluate the effectiveness of pneumatic lithotripsy (PL) with ureteroscopy in the treatment of large ureteral stones. METHODS: We reviewed, retrospectively, the records of 156 patients (122 male, 34 female) who had ureteral calculi larger than 10 mm that were treated with PL. Of these patients, 41 (26.3%) were treated primarily with PL and 115 (73.7%) were treated secondarily after unsuccessful extracorporeal shock wave lithotripsy (SWL). The mean stone diameter was 12.87 mm (range 10-20.5 mm). Results were evaluated 3 months after treatment by excretory urography and/or ultrasonography. RESULTS: The overall stone-free and fragmentation rates (FRs) were 85.2 and 92.3%, respectively. Corresponding values were 60 and 84% for upper ureteral stones, 79.5 and 89.7% for middle ureter stones and 94.5 and 95.6% for lower ureteral stones, respectively. The main complications were migration of a complete stone or of fragments (7.1%), urosepsis (4.5%) and ureteral perforation (1.3%). CONCLUSIONS: Although SWL is generally accepted as the first treatment option for ureteral stones because of its non-invasive nature, PL with ureteroscopy seems to be a good alternative with the advantage of higher success rates and quick stone clearance. Especially when we take the importance of quick stone removal into account for larger ureteral stones, which are more likely to have obstruction, impaction, or infection, we believe that PL may be chosen as the first line treatment rather than SWL for stones larger than 10 mm.

Factors associated with postoperative pain after retrograde intrarenal surgery for kidney stones.

OBJECTIVE: We aimed to investigate factors related to early postoperative pain after retrograde intrarenal surgery (RIRS). MATERIAL AND METHODS: A prospective data analysis of 250 patients who underwent RIRS due to kidney stones was performed. Postoperative pain was evaluated in all patients by using visual analogue scale (VAS). Patients with severe pain (VAS score ≥7) were separated and included in Group I (n=46). While patients without pain or with insignificant pain were included in Group II (n=204). The impact of patient-related (age, gender, renal anomalies, shock wave lithotripsy history, preoperative hydronephrosis) stone-related (stone number, side, size, location and opacity) and operation-related (preoperative and postoperative ureteral J-stenting, ureteral injury, postoperative bleeding and fever, stone-free rates, size of access sheath, and sheath indwelling time) factors on early stage postoperative pain (if any) were investigated. RESULTS: Female gender increased the risk for pain 3.6-fold (p<0.05). One millimeter increase in stone diameter increased the risk for postoperative pain 1.15-fold. Prolonged sheath time was another important factor which increased the risk for pain (p<0.05). Patients with high residual fragments were also prone to early postoperative pain. CONCLUSION: According to our results, patient-, stone-and operation-related factors associated with postoperative pain after RIRS were female gender, stone size and sheath time.

Value of ultrasonography and helical computed tomography in the diagnosis of stone-free patients after extracorporeal shock wave lithotripsy (USG and helical CT after SWL).

AIM: To define the value of different radiologic modalities in determining the patients who believed to be stone-free after extracorporeal shock wave lithotripsy (SWL) with plain abdominal X-ray, by evaluating the same patients with ultrasonography (USG) and helical computed tomography (CT). PATIENTS AND METHODS: Between March 2002 and February 2003, 76 patients with urolithiazis who were treated with SWL and considered to be stone-free with plain abdominal X-ray, were evaluated with USG and helical CT. The results were compared for the accuracy of the stone-free diagnosis. RESULTS: Residual stones were detected in 9 (11.8%) with USG and in 17 (22.3%) with CT of 76 patients who were thought to be stone-free with plain abdominal X-ray alone. CONCLUSIONS: Although plain abdominal X-ray has been accepted as the first line diagnostic tool in the follow-up after SWL with its cheap and practical use, helical CT was found to be more valuable in diagnosis of residual stone fragments which has not been found in plain abdominal X-ray. If we take these considerations which can change our clinical approach and patient follow-up into account, we believe that the routine use of helical CT can give more accurate information in patient controls after SWL.