World Journal of Urology最新文献

Objective: The present study aimed to examine the relationship between irrigation velocity, operator duty cycle (ODC), and intrarenal temperature during retrograde intrarenal surgery with a superpulse fiber thulium laser.

Methods: Place the stones into the fresh isolated porcine kidneys, use puncture needle to place the temperature probe 2 mm around the stones, and place the pressure probes in the upper calyx, lower calyx, and renal pelvis. Place the entire setup in a 37 °C constant temperature water bath to simulate the human body environment. The laser power varies between 10 and 30 W, and the irrigation speed is 10-30 ml/min. Additionally, at a laser power of 20 W and an irrigation speed of 10 ml/min, different On-Duty Cycles (ODC) are set. Monitor the changes in temperature and pressure.

Results: A direct proportionality of temperature in the kidney to the rate of irrigation has been reported between 10 W and 30 W laser powers. The percentage ratio of the rate of irrigation and power in the laser is 1:1, which can keep the temperature in the kidney at a safe level. At a laser power of 20 W and irrigation of 10 ml/min, the temperature inside the kidney increases sharply with the increase in ODC. By decreasing the ratio of ODC, the increase of temperature inside the kidney can be brought to a great reduction.

Conclusion: Maintaining a 1:1 ratio between laser power and irrigation speed can effectively prevent thermal damage or injury to kidney tissue.Additionally, by adjusting the On-Duty Cycle (ODC) ratio, the intrarenal temperature can also be reduced.

Purpose: Intrauterine vesicoamniotic shunting (VAS) was shown to affect survival of male fetuses with megacystis in suspected lower urinary tract obstruction (LUTO). Data on postnatal management are largely lacking. We aim to describe the pathologies diagnosed in children born after vesicoamniotic shunt placement in early pregnancy for megacystis.

Methods: All newborns with previous intrauterine VAS treated in our institution were analyzed retrospectively. We evaluated the clinical spectrum of urethral pathologies. We also compared patients who received a shunt before the 17th gestational week with those who received it later.

Results: Between 2014 and 2023, 26 patients (all male) with a history of VAS for suspected LUTO were treated in our institution postnatally. Five fetuses with dislocated shunts underwent re-implantation in utero. Overall, premature birth before the 38th week of gestation was observed in 14 patients. Seven patients received a Harrison^® shunt whereas 19 received a Somatex^® shunt. Twelve patients required surgical shunt removal under general anesthesia due to shunt migration/embedding. Posterior urethral valves were found in 10/26 patients, 10/26 patients showed a urethral hypoplasia [Fig. 1] and two patients had urethral duplications. In two patients, we identified a prune belly syndrome. One patient had posterior and anterior urethral valves. One patient had a high grade bilateral vesicoureteral reflux without LUTO. The 11 patients shunted early (before 17GW) showed a trend towards a higher proportion of urethral hypoplasia in the early shunt group (54% vs. 26%) without statistical significance.

Conclusion: In our observation, patients treated with VAS had a noticeable high proportion of complex urethral pathologies such as urethral hypoplasia. These data should be taken into consideration for prenatal counselling of parents and planning of postnatal management.

Purpose: Urolithiasis significantly affects patient quality of life, yet the global standard of care predominantly focuses on achieving a stone free status, often ignoring patient reported outcomes. Currently, there are no specific measures available to assess the quality of life in the Polish population suffering from kidney stones. Therefore, this study aimed to develop and validate the Polish version of the Wisconsin Stone Quality of Life Questionnaire.

Methods: The translation of WISQOL was carried out in accordance with the best available guidelines. Patients treated for kidney stones at a tertiary centre were recruited and completed both POL-WISQOL and SF36 questionnaires. Comprehensive analyses were conducted to assess internal consistency, inter-item and inter-domain correlations, as well as convergent and construct validity. Additionally, test-retest reliability was evaluated to ensure the accuracy and stability of the findings.

Results: A total of 102 participants fully completed both questionnaires and were included in the analysis. The translated survey demonstrated excellent internal consistency (Cronbach's coefficient 0.967) and significant convergent validity (Spearman's correlation = 0.847, p < 0.001). Furthermore, an ANOVA with Tukey's post hoc analysis revealed a significant decline in WISQOL scores between symptomatic and asymptomatic individuals, thereby confirming tool's construct validity.

Conclusion: POL-WISQoL turned out to be a valid disease specific health related quality of life measuring tool. Its widespread utilisation has the potential to shift the standard of care towards patient centered outcomes.

Purpose: We evaluated short-term postoperative recovery in patients with benign prostatic hyperplasia (BPH), especially focusing on symptoms reduction and life quality enhancement.

Methods: We prospectively enrolled 160 BPH patients who underwent surgery and were followed up regularly for 12 weeks, collecting the International Prostate Symptom Score (IPSS), Quality of Life (QoL), and Qmax. Regression analysis and mixed effect models were used to evaluate the tendency of symptoms on recovery from the perspective of quality of life.

Results: At 12 weeks, all patients recovered well with conspicuous change in IPSS, QoL and Qmax, that were 4.80 ± 4.59, 1.34 ± 1.14,20.02 ± 8.61 mL/s respectively. Voiding symptoms were significantly reduced by 79.4% at 2 weeks, whereas storage symptoms recovered slowly until 12 weeks with residual lower urinary tract symptoms (LUTS), predominantly urinary frequency and nocturia. Improvements in incomplete emptying urination and urinary frequency were significantly associated with QoL.

Conclusions: With regards to the comprehensive full-cycle treatment of LUTS patients, in addition to the objective results, more attention should also be focused on the change in following symptoms, that is, incomplete emptying urination, urine frequency and urination difficulty, which play key roles in the enhancement of patients' quality of life.

Background: The aim of this study was to evaluate the differences in perioperative outcomes between transperitoneal and retroperitoneal techniques in cutaneous ureterostomy (CUS).

Methods: Between 2018 and 2023, 55 patients underwent CUS following robot-assisted radical cystectomy. Among the 55 patients, we compared 33 patients who underwent transperitoneal CUS (t-CUS) and 22 who underwent retroperitoneal CUS (r-CUS).

Results: Compared with the r-CUS group, the t-CUS group had significantly shorter operative times (p < 0.001); significantly less estimated blood loss (p < 0.001); and significantly lower incidence of complications (Clavien-Dindo classification grade ≤ 2) within 30 days (p = 0.005). Unexpectedly, the incidence of ileus within 30 days was lower, though the difference was not statistically significant (p = 0.064). During the median follow-up period of 24.3 months, no ileus was observed in either group after 30 days postoperatively. There was no significant difference in the stent-free rate between the groups (p = 0.449). There were also no significant differences in the rates of change in estimated glomerular filtration rate from preoperatively at 3, 6, 12, and 24 months postoperatively between the groups (p = 0.590, p = 0.627, p = 0.741, and p = 0.778, respectively).

Conclusions: Compared with r-CUS, t-CUS was associated with a shorter operative time and lower incidence of perioperative complications, including gastrointestinal complications. We believe that t-CUS can be performed safely and effectively.

Purpose: To investigate the efficacy of high-dose vitamin D supplementation (VDS) plus standard urotherapy (SU) in managing pediatric overactive bladder dry (OAB-dry), specifically in children with (1) vitamin D levels between 20 and 35 ng/mL and (2) heightened baseline symptom severity.

Methods: In this secondary analysis of a randomized controlled trial, eligible children (n = 303) were assigned to 8 weeks of VDS + SU group, solifenacin (SOL) + SU group, or SU alone group. The primary outcome was voiding frequency; secondary outcomes included urgency, nocturia, quality of life (QoL), pediatric lower urinary tract symptoms scores, and patient satisfaction.

Results: Among 303 participants, 197 (65%) had vitamin D levels between 20 and 35 ng/mL, and 119 (39%) exhibited heightened baseline symptom severity. In both subgroups, VDS + SU resulted in significantly greater improvements in voiding frequency compared to SOL + SU and SU alone. In the vitamin D subgroup (20-35 ng/mL), the median difference in voids/day between VDS + SU and SOL + SU was 2.0 (95% CI, 1.0 to 3.0; P = 0.003) and 3.2 compared to SU alone (P < 0.001). In the heightened symptom subgroup, the median difference was 3.0 (95% CI, 2.0 to 4.0; P < 0.001) vs. SOL + SU and 5.0 (95% CI, 4.0 to 6.0; P < 0.001) vs. SU alone. The VDS + SU group generally outperformed the other groups in various secondary outcome measures.

Conclusion: High-dose VDS plus SU has significant therapeutic benefit in children with OAB-dry in those with vitamin D levels between 20 and 35 ng/mL and with more severe symptoms, compared to SOL + SU or SU alone.

Objective: To investigate the prognostic value of baseline health-related quality of life (HRQOL) for patients with intermediate-risk localized prostate cancer (IR-PCa) undergoing radical prostatectomy (RP).

Methods: 4780 patients with IR-PCa according to NCCN risk stratification were identified from a prospectively maintained database. All patients were treated with RP and had prospectively assessed baseline HRQOL. Main outcomes were oncologic endpoints metastasis-free survival (MFS); biochemical recurrence free survival (BRFS) and overall survival (OS). Multivariable Cox regression models assessed prognostic significance of baseline global health status (GHS) on survival outcomes. Harrell's discrimination C-index was applied to calculate the predictive accuracy of the model. Decision curve analysis (DCA) tested the clinical net benefit associated with adding the GHS domain to our multivariable model (p < 0.05).

Results: Median follow-up was 51 months. Multivariable analysis confirmed baseline GHS as an independent predictor for increased MFS (HR 0.976, 95%CI 0.96-0.99; p < 0.001), increased BRFS (HR 0.993, 95%CI 0.99-1.00; p = 0.027) and increased OS (HR 0.969, 95%CI 0.95-0.99; p = 0.002), indicating a relative risk reduction of 2.4% for MFS, 0.7% for BRFS and 3.1% for OS per 1-point increase of baseline GHS. Baseline HRQOL improved discrimination in predicting MFS, BRFS and OS. DCA revealed a net benefit over all threshold probabilities.

Conclusions: We found baseline HRQOL to substantially improve risk stratification for the heterogeneous cohort of IR-PCa. Baseline HRQOL accurately predicts increased MFS, BRFS and OS. Our findings therefore support the role of preoperative HRQOL as an adjunct to established prognosticators for IR-PCa, potentially facilitating guidance of therapy.

Purpose: To determine new-onset or worsening T2DM risk in patients with metastatic castration-resistant prostate cancer (mCRPC) receiving abiraterone acetate (AA) vs. enzalutamide (ENZA) in England.

Methods: Records of patients on AA and/or ENZA (2015-2021) were analysed retrospectively from UK- or England-wide databases and data sets. The primary endpoint was new-onset or worsening T2DM, analysed using a Cox model.

Results: Of 1382 patients, 84 (6.1%) met the primary endpoint; 42 of 826 patients (5.1%) received ENZA and 42 of 556 patients (7.6%) received AA. Among patients without baseline T2DM (n = 1049), 50 developed new-onset T2DM: 24 (3.9%) on ENZA and 26 (5.9%) on AA. Among patients with baseline T2DM (n = 333), 34 (10.2%) had worsening T2DM: 18 (8.3%) on ENZA and 16 (13.8%) on AA. Patients on ENZA had longer median follow-up (445 vs. 408 days) and treatment duration (164 vs. 139 days) than those on AA, who were also more likely to have new-onset or worsening T2DM than those on ENZA (HR: 1.8; 95% CI: 1.4-2.7; P = 0.0101). The number needed to harm for an additional patient to experience new-onset or worsening T2DM when receiving AA instead of ENZA was 40 overall, 50 in patients without baseline T2DM, and 18 in patients with baseline T2DM.

Conclusion: Patients with mCRPC receiving AA were more likely to experience new-onset or worsening T2DM than those on ENZA, despite having a shorter treatment duration. Further research is required to substantiate these findings in earlier disease settings with longer treatment duration.

Purpose: To clarify specific factors associated with surgical outcomes in robot-assisted partial nephrectomy (RAPN) that require extended warm ischemia time (WIT), which may have a negative impact, but cannot always be avoided.

Methods: We included 1,182 patients who had RAPN performed between January 2016 and December 2022 from a prospectively generated multi-institutional RAPN database, divided into normal WIT (nWIT) (≤ 20 min; 843 patients) and extended WIT (eWIT) (> 20 min; 339 patients) groups. Primary outcome measures were WIT and the Surface-Intermediate-Base (SIB) margin score, which contribute to postoperative trifecta achievement. Results were compared between the two groups using logistic regression.

Results: Patients in the eWIT group had larger tumors, higher RENAL nephrometry scores, and lower SIB scores than those of the nWIT group. The trifecta achievement rate was significantly different between the two groups (nWIT: 70.1 vs. 49.0%, p < 0.001). In the nWIT group, WIT (coefficient: -0.105 [standard error 0.020], p < 0.001) and SIB score (coefficient: -0.107 [0.053], p = 0.045) were significant predictors of trifecta achievement. In the eWIT group, the SIB score (coefficient - 0.216 [0.082], p = 0.008) was significantly associated with trifecta attainment, whereas WIT only showed a trend toward significance. Limitations included a lack of long-term survival, renal function, and chronic complications data.

Conclusions: For patients with eWIT during RAPN, the tumor dissection technique may be more important than WIT in predicting postoperative outcomes. Further prospective studies are required to confirm our results.

Purpose: To evaluate and compare the clinical results of different single-use flexible ureteroscopes (su-fURS) used in retrograde intrarenal surgery (RIRS).

Materials and methods: RIRS cases performed identically by an experienced surgeon between 2022 and 2023 in a single center were retrospectively analyzed. These surgeries were performed with three su-fURS (Redpine RP-U-C12, Hugemed HU30, and Pusen Uscope 3022 A). In the study, the age, gender, body mass index, and Charlson comorbidity index of the patients were compared, along with their clinical details, such as the stone size, volume, density, location, and history of hydronephrosis or a double J stent or SWL. Operation time, stone-free rates (SFR), perioperative and postoperative complications, and hospitalization times were also compared.

Results: The study included 208 patients. Pusen had 63 cases, Hugemed had 62, and Redpine had 83. The comparison of the patient's demographic and clinical properties with stone-related variables was similar between the groups. The SFR was similar between the groups (p = 0.056). Perioperative, postoperative, and total complication rates and the need for a second intervention showed no significant differences among the three groups (p = 0.324, 0.088, 0.061, and 0.052, respectively).

Conclusion: In the first study comparing the clinical results of cases in which different su-fURS were used, no difference was observed in surgical outcomes and complications, even though the technical features of these devices were different. Urologists should select su-fURS based on clinical requirements, financial constraints, and personal experiences.