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Objective: Overuse of antibiotics has led to an increase in antimicrobial resistance (AMR) worldwide, with a negative impact on the healthcare system and the patients. In this context, our study aims to assess the current AMR patterns of urinary tract infections (UTIs) associated to Gram-negative bacteria. Thus, we provide useful information for doctors dealing with prophylactic and therapeutic empiric therapies. Materials and methods: We retrospectively analysed more than 650,000 urine cultures collected in the Microbiology Department of a referral University Hospital of Southern England from January 2014 to December 2022. Results: AMR spectra for 164,059 Gram-negative associated (UTIs) were analysed. The lowest percentage of resistance was found for Amikacin (2.30%), Gentamicin (5.89%) and Co-Amoxiclav (10.49%). Over a 9-year time, there was no significant change in resistance to Amikacin (2.04% in 2014 compared to 2.18% in 2022; p = 0.602) and to Fosfomycin (11.50% in 2014 versus 16.65% in 2022; p = 0.577). Overall, the trend of AMR significantly rose for Cefalexin (17.96–18.42%; p < 0.0001), Co-amoxiclav (9.46–12.69%; p < 0.0001), Nitrofurantoin (10.20–14.18%; p < 0.0001) and Piperacillin/Tazobactam (14.52–18.96%; p < 0.0001). Gram-negative resistance spectrum towards Ciprofloxacin (11.83–9.01%; p < 0.0001), Gentamicin (6.29–5.26%; p < 0.0001), Pivmecillinam (26.88–11.02%; p < 0.0001), Trimethoprim (36.72–29.23%; p < 0.0001) and Ampicillin/Amoxicillin (65.20–57.99%; p < 0.0001) significantly decreased. Conclusion: Despite the application of national and international guidelines for prophylaxis and treatment of UTIs, the spectrum of resistance for the most common antibiotics is still changing. Clinicians in primary and secondary care must keep that in mind when prescribing antibiotics for suspected UTI and sepsis associated with Gram-negative infections Up-to-date therapeutic strategies can help implement treatment of UTI, reducing selection of multi-resistant pathogens and providing more accurate care for patients. Future studies will be required to help clinicians and keep the guidelines updated. Plain language summary Gram negative bacteria related urinary tract infections: spectrum of antimicrobial resistance over 9 years in a University tertiary referral Hospital Despite the application of national and international guidelines for prophylaxis and treatment of urinary tract infections, the spectrum of resistance for the most common antibiotics is still changing. Clinicians in primary and secondary care must keep that in mind when prescribing antibiotics for suspected urinary tract infections and sepsis associated with gram-negative bacteria. Up-to-date therapeutic strategies can help implement treatment of urinary tract infection, reducing selection of multi-resistant pathogens and providing more accurate care for patients. Future studies will be required to help clinicians and keep the guidelines updated.

BackgroundThe Rezum system is one of the latest minimally invasive surgical treatments for benign prostatic hyperplasia.MethodsWe retrospectively reviewed all patients who underwent the Rezum treatment in seven different Italian institutions. A successful urinary outcome was defined as: ≥50% improvement in the IPSS <7, improvement in peak flow ≥50% and/or more than 15 ml/s, ≥1-point improvement in the QoL questionnaire and in the absence of perioperative major complications (AUR, transfusion) or postoperative incontinence. A successful sexual outcome was defined as postoperative (latest follow up consultation) antegrade ejaculation or no variation in ejaculatory function and an increase, or stability or max 1 class reduction, in IIEF-5.Results262 patients were enrolled with a follow-up period of 11 months (IQR 5–15). No early or late serious adverse events (Clavien III–IV) occurred. Early complications occurred in 39.3% of cases, with 4 cases of clot retention and one case of blood transfusion. Urge incontinence was reported by 6 patients (2.2%). A treatment failure requiring re-intervention occurred in 4 cases (1.5%). The preoperative antegrade ejaculation rate was 56.5%, and after the procedure it increased to 78.2%. The increase of ≥1-point in the QoL was achieved in 92.7% of the cases. Optimal urinary and sexual outcomes were achieved in 52.9% and 87.8%, respectively.ConclusionsIn our series, water vapor intraprostatic injections seem to be an effective and safe procedure.

Digital twins, dynamic, patient-specific virtual replicas of physical systems are gaining momentum across various medical fields. Their capacity to simulate and predict biological behavior offers unprecedented opportunities for personalized care. While their utility has been demonstrated in oncology, their application in urology remains nascent, and there is still a significant gap in literature findings. This review explores the theoretical framework, current evidence, and future potential of digital twins technology in managing urological conditions such as urolithiasis, benign prostatic hyperplasia (BPH), and nonmuscle invasive bladder cancer. A narrative literature review, guided by SANRA criteria, was conducted using PubMed and Scopus databases to identify relevant studies on the application of digital twins in healthcare, with a focus on urology and related fields. Additional sources from AI, imaging, and computational modelling were incorporated to support technological and theoretical concepts. Real-world use cases and clinical scenarios were constructed to illustrate the conceptual application of digital twins in endourology. Although limited in number, preliminary studies have shown promising results in uro-oncology, particularly for prostate and renal cancers. No models have yet been developed for benign urological diseases. Hypothetical applications in endourology include personalized procedural planning, dynamic follow-up, prediction of obstruction or recurrence, and real-time intraoperative guidance. Integration of imaging, functional data, and AI algorithms could create continuously adaptive simulations to support decision-making and improve treatment outcomes. However, barriers such as data complexity, cost, lack of validation frameworks, and clinician trust persist. Digital twins hold transformative potential for the future of urology, promising to personalize care across diagnosis, treatment, and surveillance. While the path to clinical integration is challenged by technical, ethical, and infrastructural hurdles, collaborative efforts and real-world validation studies are critical to realizing their full potential in clinical practice. Digital twin in urology Digital twins consist in a virtual computer model of a real patient, created using medical scans, test results, and clinical information. It can be updated as new data become available. In urology, digital twins could help doctors plan operations, predict whether kidney stones will return, estimate how prostate treatments will work, or determine which bladder cancer patients need more frequent monitoring. Although digital twins are increasingly used in engineering and some medical fields, they are still new in urology and require further research.

Purpose of Review Kidney puncture is a key step in percutaneous nephrolithotomy (PCNL). Ultrasound/fluoroscopic-guided access to the collecting systems is commonly used in PCNL. Performing a puncture is often challenging in kidneys with congenital malformations or complex staghorn stones. We aim to perform a systematic review to examine data on in vivo applications, outcomes, and limitations of using artificial intelligence and robotics for access in PCNL. Recent Findings The literature search was performed on November 2, 2022, using Embase, PubMed, and Google Scholar. Twelve studies were included. 3D in PCNL is useful for image reconstruction but also in 3D printing with definite benefits seen in improving anatomical spatial understanding for preoperative and intraoperative planning. 3D model printing and virtual and mixed reality allow for an enhanced training experience and easier access which seems to translate into a shorter learning curve and better stone-free rate compared to standard puncture. Robotic access improves the accuracy of the puncture for ultrasound- and fluoroscopic-guided access in both supine and prone positions. The potential advantage robotics are using artificial intelligence to do remote access, reduced number of needle punctures, and less radiation exposure during renal access. Summary Artificial intelligence, virtual and mixed reality, and robotics may play a key role in improving PCNL surgery by enhancing all aspects of a successful intervention from entry to exit. There is a gradual adoption of this newer technology into clinical practice but is yet limited to centers with access and the ability to afford this.

Benign prostatic hyperplasia (BPH) is a common chronic urologic condition affecting approximately 50% of men above the age of 60. As per European Association of Urology Guidelines, BPH can be treated according to a stepwise approach starting from a conservative management, a pharmacologic approach, and finally surgery. Both medical and surgical therapies have side effects, impacting on ejaculation and sexual function and patients with multiple comorbidities might not be considered surgically suitable candidates. Prostatic stents offer a minimally invasive procedures in an out-patient setting, possibly under local anaesthesia. Utilized since the 1980s, the past stents encompassed permanent (epithelializing) or temporary (non-epithelializing) devices, like the Uro-Lume (American Medical Systems, Minnetonka, MN, USA) and the Memokath, or Memotherm (Engineers & Doctors A/S, Denmark), and the biodegradable stents made of self-reinforced poly-L-lactide or braided poly lactic-co-glycolic acid. Previous stents however showed a quite high rate of complications among which pain, incontinence, infections, stent migration or blockage, and incomplete degradation that might lead to premature removal of stent. The stents currently available on the market instead are the temporary device Allium Triangular Prostatic Urethral Stent (Allium Urological Solutions, Caesarea, Israel) and the temporary stent SPANNER (AbbeyMoor Medical, Inc., Parkers Prairie, MN, USA), which might be used in case of bladder outflow obstruction, post-operatively, or for acute urinary retention. Studies showed encouraging results, in terms of effectiveness and safety improving patients’ quality of life and International Prostate Symptom Score, but longer-term studies are needed to identify the most suitable patients who might benefit from their use. Newer stents and nitinol devices are currently investigated, and we are waiting for the results of the ongoing clinical trials.

Background: Assessment of residual fragments (RFs) is a key step after treatment of kidney stones. Objective: To evaluate differences in RFs estimation based on unenhanced computerized tomography (CT) versus X-rays/ultrasound after retrograde intrarenal surgery (RIRS) for kidney stones. Design: A retrospective analysis of data from 20 centers of adult patients who had RIRS was done (January 2018–August 2021). Methods: Exclusion criteria: ureteric stones, anomalous kidneys, bilateral renal stones. Patients were divided into two groups (group 1: CT; group 2: plain X-rays or combination of X-rays/ultrasound within 3 months after RIRS). Clinically significant RFs (CSRFs) were considered RFs ⩾ 4 mm. One-to-one propensity score matching for age, gender, and stone characteristics was performed. Multivariable logistic regression analysis was performed to evaluate independent predictors of CSRFs. Results: A total of 5395 patients were included (1748 in group 1; 3647 in group 2). After matching, 608 patients from each group with comparable baseline and stone characteristics were included. CSRFs were diagnosed in 1132 patients in the overall cohort (21.0%). Post-operative CT reported a significantly higher number of patients with RFs ⩾ 4 mm, before (35.7% versus 13.9%, p < 0.001) and after matching (43.1% versus 23.9%, p < 0.001). Only 21.8% of patients in the matched cohort had an ancillary procedure post-RIRS which was significantly higher in group 1 (74.8% versus 47.6%, p < 0.001). Age [OR 1.015 95% confidence interval (CI) 1.009–1.020, p < 0.001], stone size (OR 1.028 95% CI 1.017–1.040, p < 0.001), multiple stones (OR 1.171 95% CI 1.025–1.339, p = 0.021), lower pole stone (OR 1.853 95% CI 1.557–2.204, p < 0.001) and the use of post-operative CT scan (OR 5.9883 95% CI 5.094–7.037, p < 0.001) had significantly higher odds of having CSRFs. Conclusions: CT is the only reliable imaging to assess the burden of RFs following RIRS and urologist should consider at least one CT scan to determine the same and definitely plan reintervention only based on CT rather than ultrasound and X-ray combination.

Introduction: We wanted to analyze the trend of publications in a period of 30 years from 1994 to 2023, on the application of ‘artificial intelligence (AI), machine learning (ML), virtual reality (VR), and radiomics in percutaneous nephrolithotomy (PCNL)’. We conducted this study by looking at published papers associated with AI and PCNL procedures, including simulation training, with preoperative and intraoperative applications. Materials and Methods: Although MeSH terms research on the PubMed database, we performed a comprehensive review of the literature from 1994 to 2023 for all published papers on ‘AI, ML, VR, and radiomics’ in ‘PCNL’, with papers in all languages included. Papers were divided into three 10-year periods: Period 1 (1994–2003), Period 2 (2004–2013), and Period 3 (2014–2023). Results: Over a 30-year timeframe, 143 papers have been published on the subject with 116 (81%) published in the last decade, with a relative increase from Period 2 to Period 3 of +427% (p = 0.0027). There was a gradual increase in areas such as automated diagnosis of larger stones, automated intraoperative needle targeting, and VR simulators in surgical planning and training. This increase was most marked in Period 3 with automated targeting with 52 papers (45%), followed by the application of AI, ML, and radiomics in predicting operative outcomes (22%, n = 26) and VR for simulation (18%, n = 21). Papers on technological innovations in PCNL (n = 9), intelligent construction of personalized protocols (n = 6), and automated diagnosis (n = 2) accounted for 15% of publications. A rise in automated targeting for PCNL and PCNL training between Period 2 and Period 3 was +247% (p = 0.0055) and +200% (p = 0.0161), respectively. Conclusion: An interest in the application of AI in PCNL procedures has increased in the last 30 years, and a steep rise has been witnessed in the last 10 years. As new technologies are developed, their application in devices for training and automated systems for precise renal puncture and outcome prediction seems to play a leading role in modern-day AI-based publication trends on PCNL.