First clinical evaluation of a flexible digital ureteroscope with direct in scope suctioning system (Pusen DISS 7.5Ch): prospective multicentric feasibility study.

PURPOSE: A new digital single-use flexible ureteroscope, Pusen direct in scope suction (DISS) 7.5Fr (PU3033AH), was evaluated with respect to manoeuvrability, suction quality, visibility and clinical efficiency. METHODS: A prospective cohort study was conducted in six tertiary reference centers in Europe and Asia between February-April 2024. Adult patients who underwent flexible ureteroscopy and laser lithotripsy (fURSL) for urolithiasis were included. Demographic, intraoperative and follow-up characteristics were recorded. Quality parameters were rated by each surgeon using a Likert scale. RESULTS: a total of 57 fURSL were performed. Preoperative characteristics revealed a mean stone volume of 480.00mm3 (mean Hounsfield Unit- 998). 57.9%(n = 33) of the patients were pre-stented, and a ureteric access sheath was used in 64.9%(n = 37). Integrated-suction was deemed helpful in 94.7%(n = 54) fURSL as reported by the operators. An initial stone free rate (SFR) confirmed by postoperative imaging was achieved in 84.21%(n = 48). Quality parameters of the scope reached a mean Likert score of 4.5, with a "very good" mean evaluation for "scope placement", "visual quality", "irrigation", "deflection", "manoeuvrability", and "weight". "Suction quality" and "overall performance satisfaction" were rated "good". Comparing the Pusen DISS scope with other previously used scopes, overall satisfaction was rated 4.1. When asked if the surgeons would be willing to use the Pusen DISS 7.5Fr scope in the future, all the six surgeons answered positively. CONCLUSION: The DISS 7.5 Pusen ureteroscope displayed good visibility, manoeuvrability and suction quality, with excellent operative results. Further evaluation with larger comparative cohorts will help understand the potential of in-vivo use of integrated suctioning systems for fURSL.

Focused UTUC pathways with a risk-stratified approach to diagnostic ureteroscopy: is it the need of the hour? A retrospective cohort analysis.

INTRODUCTION: Upper urinary tract urothelial cancer is a rare, aggressive variant of urinary tract cancer. There is often delay to diagnosis and management for this entity in view of diagnostic and staging challenges needing additional investigations and risk stratifications for improved outcomes. In this article, we share our experience in developing a dedicated diagnostic and treatment pathway for UTUC and assess its impact on time lines to radical nephroureterectomy (RNU). We also evaluate the impact of diagnostic ureteroscopy (DUR) on UTUC care pathways timelines. MATERIALS AND METHODS: A prospective database was maintained for all patients who underwent a RNU from January 2015 to August 2022 in a high-volume single tertiary care centre in the UK. In 2019, a Focused UTUC pathway (FUP) was implemented at the centre to streamline diagnostic and RNU pathways. A retrospective analysis of the database was conducted to compare time lines and diagnostic trends between the pre-FUP and FUP cohorts. Primary outcome measures were time to RNU from MDT. Secondary outcome measures were: impact of DUR on time to RNU from MDT and negative UTUC rates between DUR and non-DUR cohorts. Differences in continuous variables across categories were assessed using the independent sample t test. Categorical variables between cohorts were analysed using the chi-square (χ2). Statistical significance in this study was set as p < 0.05. RESULTS: A total of 500 patients with complete data were included in the analysis. The pre-FUP and FUP cohorts consisted of 313 patients and 187 patients, respectively. The overall cohort had a mean age (SD) of 70 years (9.3). 66% of the overall cohort were males. The median time to RNU from MDT in the FUP was significantly lower compared to the pre-FUP cohort; 62 days (IQR 59) vs. 48 days (IQR 41.5), p < 0.0001. The median time to RNU from MDT in patients who underwent a diagnostic URS in the FUP cohort was significantly lower compared to the pre-FUP cohort; 78.5 days (IQR 54.8) vs. 68 days (IQR 48), p-NS. The non-UTUC rates in the DUR and non-DUR cohorts were 6/248 (2.4%) and 14/251 (5.6%), respectively (NS). CONCLUSION: In this series, we illustrate the effectiveness of integrating a multidisciplinary approach with specialised personnel, ring-fenced clinics, efficient diagnostic assessment and optimised theatre capacity. By adopting a risk-stratified approach to diagnostic ureteroscopy, we have achieved a significant reduction in time to RNU.

Selection and Outcomes for Dissolution Therapy in Uric Acid Stones: A Systematic Review of Literature.

PURPOSE OF REVIEW: The prevalence of uric acid (UA) urolithiasis contributes significantly to global disease burden, due to high rates of recurrence and diagnostic challenges. Dissolution therapy plays a valuable role in the conservative management of UA calculi, reducing the requirement for surgical intervention. This review summarises the existing evidence for the efficacy of medical dissolution of uric acid urolithiasis. RECENT FINDINGS: A systematic search was conducted of worldwide literature according to PRISMA methodology and Cochrane standards for systematic review. Studies were included if they reported outcome data for the administration of medical therapy for the dissolution of UA calculi. A total of 1075 patients were included in the systematic review. Complete or partial dissolution of UA calculi was observed in 80.5% of patients (865/1075 patients), with 61.7% (647/1048 patients) achieving complete dissolution and 19.8% (207/1048 patients) achieving partial dissolution. A discontinuation rate of 10.2% (110/1075 patients) was noted, and 15.7% (169/1075 patients) required surgical intervention. Dissolution therapy is a safe and effective method of conservatively managing uric acid stones in the short term. Despite the significant disease burden of UA calculi, current guidelines are limited by deficiencies in the existing body of research. Further research should be undertaken to develop evidence-based clinical guidelines for diagnosis, treatment, and prevention of UA urolithiasis.

Role of Hounsfield Unit in Predicting Outcomes of Shock Wave Lithotripsy for Renal Calculi: Outcomes of a Systematic Review.

PURPOSE OF REVIEW: Extracorporeal shock wave lithotripsy success rates depend on several stone and patient-related factors, one of which is stone density which is calculated on computed tomography scan in Hounsfield Units. Studies have shown inverse correlation between SWL success and HU; however, there remains considerable variation between studies. We performed a systematic review regarding the use of HU in SWL for renal calculi to consolidate the current evidence and address current knowledge gaps. RECENT FINDINGS: Database including MEDLINE, EMBASE, and Scopus were searched from inception through August 2022. Studies in English language analysing stone density/attenuation in adult patients undergoing SWL for renal calculi were included for assessment of Shockwave lithotripsy outcomes, use of stone attenuation to predict success, use of mean and peak stone density and Hounsfield unit density, determination of optimum cut-off values, nomograms/scoring systems, and assessment of stone heterogeneity. 28 studies with a total of 4,206 patients were included in this systematic review with sample size ranging from 30 to 385 patients. Male to female ratio was 1.8, with an average age of 46.3 years. Mean overall ESWL success was 66.5%. Stone size ranged from 4 to 30 mm in diameter. Mean stone density was used by two-third of the studies to predict the appropriate cut-off for SWL success, ranging from 750 to 1000 HU. Additional factors such as peak HU and stone heterogeneity index were also evaluated with variable results. Stone heterogeneity index was considered a better indicator for success in larger stones (cut-off value of 213) and predicting SWL stone clearance in one session. Prediction scores had been attempted, with researchers looking into combining stone density with other factors such as skin to stone distance, stone volume, and differing heterogeneity indices with variable results. Numerous studies demonstrate a link between shockwave lithotripsy outcomes and stone density. Hounsfield unit < 750 has been found to be associated with shockwave lithotripsy success, with likelihood of failure strongly associated with values over 1000. Prospective standardisation of Hounsfield unit measurement and predictive algorithm for shockwave lithotripsy outcome should be considered to strengthen future evidence and help clinicians in the decision making. TRIAL REGISTRATION: International Prospective Register of Systematic Reviews (PROSPERO) database: CRD42020224647.

Agents of Change for Mental Health: A Survey of Young People's Aspirations for Participation Across Five Low- and Middle-Income Countries.

PURPOSE: Effective intervention, policy, and research in mental health and well-being (MHWB) require young people to be understood not only as beneficiaries, but also as active agents in codesigning and implementing initiatives. To identify pathways for young people's participation in promoting MHWB in low- and middle-income countries (LMICs), this study surveyed young people's aspirations for engagement, their spheres of influence, capacity building needs, and key barriers to participation. METHODS: Using U-Report, United Nations Children's Emergency Fund's social messaging tool and data collection platform, we distributed a short quantitative survey to a nonrepresentative, but large sample of young people aged 15-29 across five LMICs: Nigeria, Brazil, Jamaica, South Africa, and Burundi. RESULTS: A total of 42,689 young people responded, with representation from most or all provinces within each country. Participants' average age was 23.8 years (SD = 3.77). Young people's core aspirations were to join a mental health awareness project and to support their peers. Participants considered schools and community settings to be the most important spheres for engagement. Lack of information about mental health was the main perceived barrier to participation, and mental health classes the main training need. DISCUSSION: In many countries, MHWB is not taught or discussed in schools and youth-led mental health interventions are rare. Findings from this study reveal clear aspirations for participatory engagement to promote MHWB among young people in LMICs. To support meaningful participation, policymakers and youth service providers must ensure that young people have access to mental health literacy training and opportunities to raise awareness in schools or community settings.

Urinary Stones and Intervention Quality of Life (USIQoL): Development and Validation of a New Core Universal Patient-reported Outcome Measure for Urinary Calculi.

BACKGROUND: Urolithiasis has a significant impact on patients' health-related quality of life (HRQoL). OBJECTIVE: To develop a core patient-reported outcome measure (PROM) using modern psychometric methods to quantify the impact of urolithiasis and different treatments. DESIGN, SETTING, AND PARTICIPANTS: Adult patients with urinary calculi, attending urology departments, covering all index categories and treatment spectrum, participated during different development phases. The pilot instrument was created from potential items (phases 1 and 2) within the conceptual framework. The instrument was pretested (phase 3) and then underwent psychometric evaluation in two parts (phases 4 and 5). OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: The validity and reliability of the new PROM were assessed using Rasch measurement theory (RUMM 2030 statistical software) and traditional analyses. RESULTS AND LIMITATIONS: In total, 683 patients (median age 51 yr, range 18-92 yr) participated during different phases. The initial 60-item draft (five scales) was completed by 212 patients (phase 4). A revised 25-item draft was produced after removal of unstable items. In the second field test, the revised version was evaluated by 369 patients. This led to the final Urinary Stones and Intervention Quality of Life (USIQoL; 15 items) with summated logit scores. The PROM includes three scales: pain with physical health (six items), psychosocial health (seven items) and work performance (two items). Lower scores indicate better outcomes. Results demonstrate that USIQoL is reliable (r ≥ 0.8) and internally consistent (α ≥ 0.7), and has good construct validity (good hypothesised correlations, r > 0.3) and satisfactory sensitivity to change (p < 0.01). All scales demonstrated unidimensionality with good item fit and person separation indices. A limitation is that USIQoL was developed in the English language within the UK population. CONCLUSIONS: USIQoL is a short, unidimensional, valid, and reliable PROM for assessing the HRQoL impact of urinary calculi and treatments. It is expected to serve as a core PROM across the entire spectrum of urolithiasis. PATIENT SUMMARY: Kidney stones are a common condition for which various treatment options are available. The condition and treatments have a significant impact on a patient's quality of life. This can be measured objectively using a valid and reliable patient-reported outcome measure (PROM) developed using modern methods. We have developed a PROM that provides helpful and accurate measurement useful for all stakeholders.

COVID-19 (SARS-CoV-2) in Non-Airborne body fluids: A systematic review & Meta-analysis.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has been predominantly respiratory. This study aimed to evaluate the presence of virus in non-airborne body fluids as transmission vehicles. Medline, EMBASE, and Cochrane Library databases were searched from December 01, 2019, to July 01, 2020, using terms relating to SARS-CoV-2 and non-airborne clinical sample sources (feces, urine, blood, serum, serum, and peritoneum). Studies in humans, of any design, were included. Risk of bias assessment was performed using the Quality Assessment of Diagnostic Accuracy 2 tool. Preferred Reporting Items for Systematic Reviews & Meta-Analyses) guidelines were used for abstracting data. If ≥5 studies reported proportions for the same non-respiratory site, a meta-analysis was conducted using either a fixed or random-effects model, depending on the presence of heterogeneity. A total of 22 studies with 648 patients were included. Most were cross-sectional and cohort studies. The SARS-CoV-2 RNA was most frequently detected in feces. Detectable RNA was reported in 17% of the blood samples, 8% of the serum, 16% in the semen, but rarely in urine. Prevalence of SARS-CoV-2 in non-airborne sites varies widely with a third of non-airborne fluids. Patients with bowel and non-specific symptoms have persistence of virus in feces for upto 2 weeks after symptom resolution. Although there was a very low detection rate in urine, given the more frequent prevalence in blood samples, the presence of SARS-CoV-2 in patients with disrupted urothelium or undergoing urinary tract procedures, is likely to be higher. Healthcare providers need to consider non-airborne transmission and persistence of SARS-CoV-2 in body fluids to enable appropriate precautions to protect healthcare workers and carers.

Optimisation of shock wave lithotripsy: a systematic review of technical aspects to improve outcomes.

Shock wave lithotripsy (SWL) remains an important treatment option for the management of upper urinary tract stones. The optimisation of certain technical principles can help to improve the results of SWL. We performed a systematic review based on preferred reporting items for systematic review and meta-analysis (PRISMA) standards for studies reporting on technical aspects of SWL. A literature search was conducted on the PubMed database between January 1984 and November 2018 using 'shockwave lithotripsy' and 'stone' as keywords. Summaries and manuscripts of relevant articles were reviewed in order to select studies with the best level of evidence in each theme covered during the review. From 4,135 titles, 165 abstracts and full-text articles were reviewed. Overall, SWL has good outcomes in the treatment of upper urinary tract stones. It remains the only truly non-invasive stone treatment. While stone-free rate (SFR) might not be equivalent to ureteroscopy or percutaneous nephrolithotomy outcomes, SWL can be optimised by changing several technical factors, including type of machine, patient position, number, rate and energy of shocks, stone targeting, and patient analgesia. For each of these included SWL themes, relevant and selected studies with the highest level of evidence were described and discussed. Paired with these improved technical factors and appropriate patient selection, SWL, with its low complication rates, remains an excellent treatment option in 2019.

Urolithiasis: evaluation, dietary factors, and medical management: an update of the 2014 SIU-ICUD international consultation on stone disease.

PURPOSE: The aim of this review was to provide current best evidence for evaluation, dietary, and medical management of patients with urolithiasis. METHODS: Literature addressing evaluation, dietary, and medical management of urolithiasis was searched. Papers were analyzed and rated according to level of evidence (LOE), whereupon a synthesis of the evidence was made. Grade of recommendation (GOR) was judged from individual clinical experience and knowledge of the evidence according to the Oxford Centre for Evidence-based Medicine. RESULTS: It is obvious that different stone diseases influence the life of stone-forming individuals very differently, and that evaluation and medical management should be personalized according to risk of recurrence, severity of stone disease, presence of associated medical conditions, and patient's motivation. With regard to evaluation, dietary and medical management of patients with urolithiasis evidence from the literature suggest that selective metabolic evaluation may lead to rational dietary and medical management. Statements based on LOE and GOR are provided to guide clinical practice. CONCLUSION: The provided evidence for evaluation of patients with urolithiasis aims at defining patients at high risk for recurrent/complicated stone disease. Based on this approach, evidence-based dietary and medical management regimes are suggested.

Malakoplakia of the Urogenital Tract.

Malakoplakia is a rare, granulomatous condition most commonly found in the genitourinary tract. It can present in a myriad of ways depending on the organ involved, thus presenting a huge diagnostic challenge. We present 4 patients with genitourinary malakoplakia, who manifested with recurrent urinary tract infection (UTI) and hematuria in all except one, who presented with hydronephrosis secondary to a large pelvic mass. We discuss the need for a high index of suspicion and careful scrutiny of histology to order to avoid misdiagnosis as simple long term antibiotics are an effective treatment in all but those with large pelvic masses.

Mycobacterial spindle cell pseudotumor of the lung.

Mycobacterial spindle cell pseudotumor (MSP) is a rare benign lesion characterized by local proliferation of spindle-shaped histiocytes containing acid-fast mycobacteria. Most reported cases of MSP occur in the lymph nodes, skin, spleen, and brain in patients who are immunocompromised, particularly following solid organ transplant and in those with AIDS. This is a case report of a patient with AIDS who presented with cough, generalized weakness, and fatigue, who was found to have multilobar lung masses that were MSP, which to our knowledge has not yet been reported in the literature.

Laparoscopic orchidopexy in boys with prune belly syndrome--outcome and technical considerations.

BACKGROUND AND PURPOSE: Cryptorchidism is an ubiquitous feature in prune belly syndrome (PBS). Laparoscopic orchidopexy allows dissection of the spermatic cord with minimal morbidity. We discuss the technical difficulties and outcome of three boys with PBS who underwent two-stage laparoscopic Fowler-Stephens orchidopexy (F-SO). PATIENTS AND METHODS: Three boys, ages 1, 2, and 4, underwent laparoscopic F-SO. All boys had viable testes that were found within 3 cm of the deep inguinal ring. The testicular vessels were either ligated bilaterally with 4/0 polyglactin or monopolar diathermy was used and the vessels divided. Bilateral second-stage F-SO was performed within 6 months in two boys and limited to one side in the third boy. One boy awaits the contralateral second stage. RESULTS: All three boys have adequately sized gonads. Based on our experience, the port incisions should be smaller than routine practice to prevent air leak in PBS. Although the intra-abdominal pressure of 12 mm Hg did not vary from our normal practice, a high flow rate is necessary after initial insufflation (6 L/min) to compensate for inevitable gas leaks because the abdominal wall is so thin. Risk of diathermy injury to the thin abdominal wall and the vessels is significant. Laparoscopy enables easy visualization of the ureter, testes, and testicular vessels and permits complete dissection of testicular vessels. It is easier to maintain integrity of spermatic vessels. CONCLUSION: Use of radially expanding trocars, small incisions, and high gas flow rates permit this procedure to be performed safely with good outcome and cosmetic results in this challenging group of boys.

Semen quality after extracorporeal shockwave lithotripsy for the management of lower ureteric stones: a review of the literature.

Extracorporeal Shockwave Lithotripsy has long been an important tool in the urologists' armamentarium for the treatment of distal ureteric stones. Several studies have been conducted on the morbidity and adverse effects of ESWL on human tissues but the effect of lithotripsy on semen and testes remains inconclusive. Impact on semen analysis and testes is important because the seminal vesicles and testes are exposed to the shock waves due to their anatomical proximity to the distal ureter. This article has reviewed all the published literature in English language on semen analysis after lithotripsy.

Bipolar technology for transurethral prostatectomy.

Bipolar electrosurgical technology has gained worldwide attention with various companies introducing devices, such as the Gyrus PlasmaKinetic™ Tissue Management System (Gyrus ACMI, MN, USA) and the Olympus(®) UES-40 Surgmaster generator (Olympus, Tokyo, Japan), which is aimed at minimizing the morbidity of standard monopolar transurethral resection of the prostate (TURP), whilst also maintaining efficacy and durability. The Gyrus PlasmaKinetic System effectively controls bleeding, resulting in a clear operative field; it greatly reduces risk of transurethral resection syndrome, thus providing a new option among minimally-invasive surgical treatments for benign prostatic hyperplasia. In a meta-analysis of head-to-head comparisons between the monopolar and bipolar TURP, the operation times, transfusion rates, retention rates after catheter removal and urethral complications did not differ significantly. Irrigation and catheterization duration was significantly longer with monopolar TURP.

Orthotopic neobladder versus ileal conduit urinary diversion after cystectomy--a quality-of-life based comparison.

INTRODUCTION: Radical cystectomy remains the gold standard in treatment of muscle invasive bladder cancer. Evolution of pathological guidelines has empowered centres to offer orthotopic substitution (OBS) to patients undergoing radical cystectomy. We compared health-related quality of life (HRQoL) between patients who underwent OBS or ileal conduit urinary diversion (ICD) following radical cystectomy. PATIENTS AND METHODS: A total of 57 patients who underwent cystectomy were assessed pre-operatively using Karnofsky performance scale (KPS). Of these, 52 patients (28 OBS and 24 ICD) who responded to a postal questionnaire consisting of SF-36 and a functional index questionnaire were included. RESULTS: Median age of patients was 70 years. Pre-operative KPS scores were similar. All eight HRQoL scales were favourable in both groups. OBS patients had significantly better physical functioning. In the cohort, 42% of men with OBS and 25% of diversions could maintain an erection to varying degrees. Of the OBS patients, 85% were continent with two patients reporting reduced QoL with pad usage. Of ICD patients, 63% felt less complete and 42% were embarrassed due to the stoma, with 58% apprehensive of stomal leakage. Of OBS patients, 96% had significant relationships and a more active life-style. CONCLUSIONS: In a similar age-group population, there was no significant difference in most QoL indices but body image issues persist in ICD patients. OBS patients had significantly better physical function, continuing to have a more active lifestyle. They attained urethral voiding with good continence. A detailed discussion of long-term functional outcome would engender a realistic expectation allowing better adaptation.

Prostate cancer diagnosis: should patients with prostate specific antigen >10ng/mL have stratified prostate biopsy protocols?

BACKGROUND: Trans-rectal ultrasound (TRUS) guided systematic prostate biopsy is a standard tool in prostate cancer (CaP) diagnosis. Extended biopsy techniques using 10-12 cores are the norm. Controversy exists on extended TRUS biopsy in men with PSA>10ng/mL. We evaluated cancer detection rates on an individual core basis, to stratify prostate biopsy protocols based on PSA levels. PATIENTS AND METHODS: Over a five-year period, 1036 patients underwent TRUS guided prostate biopsy for raised serum PSA (>2.5ng/mL). 436 patients had PSA>10ng/mL. Patients with PSA<50ng/mL underwent a 12-core TRUS guided prostate biopsy including six peripheral biopsies. The six peripheral biopsies were directed laterally towards the base, mid-zone and apices. Remainder were standard para-sagittal sextant biopsies. Patients were stratified into three groups (PSA 10-20ng/mL, 20-50ng/mL and >50ng/mL). RESULTS: Mean age of 436 patients with PSA>10ng/mL was 70.3years. 270 (62%) men had cancer. Cancer detection rates for different PSA levels were 46% (10-20ng/mL), 76% (20-50ng/mL) and 93% (>50ng/mL). Higher PSA levels and advanced clinical stage were associated with increased cancer detection rates. All patients with clinical T3 and T4 disease had biopsy diagnosed CaP. CONCLUSION: TRUS guided prostate biopsy in patients with PSA>10ng/mL did not require 12 cores to diagnose CaP. CaP diagnosis required 8 cores in men with PSA 10-20ng/mL. These cores were right and left peripheral basal and apical, and right and left para-sagittal basal and apical biopsy. Only 6 cores were necessary to diagnose CaP in men with PSA>20ng/mL which were right and left peripheral basal and apical, and para-sagittal apical biopsies. We suggest limited TRUS prostate biopsy protocols for men with PSA>10ng/mL.