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BACKGROUND: Vascular access-site complications are the most frequent complications of percutaneous catheter ablation (CA) of ventricular arrhythmias (VAs). Whether arterial/venous vascular closure devices (VCDs) prevent vascular complications is unknown. OBJECTIVE: We investigated the benefit of VCDs in patients undergoing CA of VAs. METHODS: Consecutive CA of VAs were included (2018-2022). Vascular accesses were obtained with ultrasound guidance. At the discretion of the operator, arterial and/or venous VCDs were used. Cases were divided into 3 groups: no use of VCDs for any of the arterial/venous accesses (manual compression - MC), use of VCDs for some but not the all of the accesses (Partial-VCDs), use of VCDs for all of the accesses (Complete-VCDs). Vascular complications were defined minor if they didn't require intervention or major if they required intervention. RESULTS: A total of 1,016 procedures were performed in 872 patients (62±13 years, BMI 30±6 kg/m2, 27% female) during the study period. Femoral arterial access was obtained in 887 procedures (875 single access - 7.4±1.5 Fr size, 12 two accesses - 7.3±3 Fr and 6.9±1.8 Fr). Femoral venous access was obtained in 1,014 procedures (unilateral in 17%, bilateral in 83%, mean N. 2.6±0.7, 8.4±1.3 Fr). Hemostasis was achieved with MC in 192 (19%) procedures, Partial-VCD in 275 (27%), and Complete-VCD in 549 (54%). A vascular complication occurred in 52 (5.1%) procedures, including a minor hematoma in 3.9% and/or a major complication in 1.7%. The rate of vascular complications was 6.8% (5.2% minor and 1.6% major) in the MC group, 7.6% (5.1% minor and 3.3% major) in the Partial-VCD group, and 3.3% (2.9% minor and 0.9% major, P=0.014 for comparison) in the Complete-VCD group. At multivariable analysis, Complete-VCD remained independently associated with lower risk of vascular complications (odds ratio 0.69, 95% confidence interval 0.48 to 0.96, P=0.036). CONCLUSIONS: In patients undergoing CA of VAs, Complete-VCD is associated with lower rates of vascular-related complications compared to MC or Partial-VCD.

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BACKGROUND: Real-world mortality data regarding heart failure in patients with comorbid chronic kidney disease remains limited, especially following the advent of advanced heart failure therapies. METHODS: Using the CDC WONDER database, we included patients ≥ 25 years old who died primarily from heart failure (2011-2020) with comorbid chronic kidney disease. We calculated age-adjusted mortality rates (AAMR) per 100,000 individuals. We determined the trends over time by estimating the annual percent change (APC) using the Joinpoint regression program. RESULTS: There were 82,454 heart failure deaths with comorbid chronic kidney disease. The AAMR increased from 2.34 (95% CI, 2.28- 2.41) in 2011 to 4.79 (95% CI, 4.71- 4.88) in 2020. During the study period, Heart failure deaths among patients with comorbid chronic kidney disease increased by 149.0% compared to 59.9% in those without. Men had higher AAMR than women (3.92 [95% CI, 3.88- 3.96] vs. 2.96 [95% CI, 2.93- 2.99]). African American patients had the highest AAMR (5.85 [95% CI, 5.75- 5.96]). The Midwest region had the highest AAMR (3.83 [95% CI, 3.78- 3.89]). The AAMR was higher in the rural areas than in the urban regions (3.77 [95% CI, 3.71- 3.83] vs. 3.23 [95% CI, 3.20- 3.25]). Most patients died in hospices or nursing homes (29,000, 35.2%). CONCLUSION: Our study showed a significant increase in heart failure AAMR in patients with comorbid chronic kidney disease in recent eras. Further effort is needed to optimize cardioprotective agents for this population and to address demographic discrepancies at the policy level.

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During routine clinical practice, infectious disease physicians encounter patients with difficult-to-diagnose clinical syndromes and may order advanced molecular testing to detect pathogens. These tests may identify potential infectious causes for illness and allow clinicians to adapt treatments or stop unnecessary antimicrobials. Cases of pathogen-agnostic disease testing also provide an important window into known, emerging, and reemerging pathogens and may be leveraged as part of national sentinel surveillance. A survey of Emerging Infections Network members, a group of infectious disease providers in North America, was conducted in May 2023. The objective of the survey was to gain insight into how and when infectious disease physicians use advanced molecular testing for patients with difficult-to-diagnose infectious diseases, as well as to explore the usefulness of advanced molecular testing and barriers to use. Overall, 643 providers answered at least some of the survey questions; 478 (74%) of those who completed the survey had ordered advanced molecular testing in the last two years, and formed the basis for this study. Respondents indicated that they most often ordered broad-range 16S rRNA gene sequencing, followed by metagenomic next-generation sequencing and whole genome sequencing; and commented that in clinical practice, some, but not all tests were useful. Many physicians also noted several barriers to use, including a lack of national guidelines and cost, while others commented that whole genome sequencing had potential for use in outbreak surveillance. Improving frontline physician access, availability, affordability, and developing clear national guidelines for interpretation and use of advanced molecular testing could potentially support clinical practice and public health surveillance.

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PURPOSE OF REVIEW: Spinal fusion, vital for treating various spinal disorders, has evolved since the introduction of the minimally invasive Lateral Lumbar Interbody Fusion (LLIF) by Pimenta in 2001. Traditionally performed in the lateral decubitus position, LLIF faces challenges such as intraoperative repositioning, neurological complications, and lack of access to lower lumbar levels. These challenges lead to long surgery times, increased rates of perioperative complications, and increased costs. The more recently popularized prone lateral approach mitigates these issues primarily by eliminating patient repositioning, thereby enhancing surgical efficiency, and reducing operative times. This review examines the progression of spinal fusion techniques, focusing on the advantages and recent findings of the prone lateral approach compared to the traditional LLIF. RECENT FINDINGS: The prone lateral approach has shown improved patient outcomes, including lower blood loss and shorter hospital stays, and has been validated by multiple studies for its safety and efficacy compared to the LLIF approach. Significant enhancements in postoperative metrics, such as the Oswestry Disability Index, Visual Analog Scale, and radiological improvements have been noted. Comparatively, the prone lateral approach offers superior segmental lordosis correction and potentially better subjective outcomes than the lateral decubitus position. Despite these advances, both techniques present similar risks of neurological complications. Overall, the prone lateral approach has emerged as a promising alternative in lumbar interbody fusion, combining efficiency, safety, and improved clinical outcomes.

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BACKGROUND: Catheter ablation (CA) improves clinical outcomes in patients with atrial fibrillation (AF) and heart failure (HF) with reduced ejection fraction (HFrEF). We aimed to evaluate the impact of CA on clinical and quality-of-life outcomes across HF subtypes. METHODS: All patients undergoing AF ablation at a tertiary center were enrolled in a prospective registry and included in this study (2013-2021). The primary end point was AF recurrence. Secondary end points included AF-related hospitalizations and quality-of-life outcomes. Patients were categorized according to their HF status: no HF, HFrEF, HF with mildly reduced ejection fraction (HFmrEF), and HF with preserved ejection fraction (HFpEF). RESULTS: 7020 patients were included (80% no HF, 8% HFrEF, 7% HFmrEF, and 5% HFpEF). Over 3 years, the cumulative incidence of AF recurrence after ablation was as follows: HFpEF (53%), HFmrEF (41%), HFrEF (41%), and no HF (34%); P<0.01. Multivariable Cox analyses confirmed these findings using no HF group as reference (HFpEF: hazard ratio, 1.47 [95% CI, 1.21-1.78]; HFmrEF: hazard ratio, 1.23 [95% CI, 1.04-1.45]; and HFrEF: hazard ratio, 1.17 [95% CI, 1.01-1.37]; P<0.05 for all). In all groups, CA resulted in a significant reduction of AF-related hospitalization (mean rate per 1 patient-years [before and after CA]; HFpEF [1.8 versus 0.3], HFmrEF [1.1 versus 0.2], HFrEF [1.1 versus 0.2], and no HF [1 versus 0.1]; P<0.01 for each comparison) and significant improvement in quality of life as measured by both the AF symptom severity score and the AF burden score (P<0.01 for the comparison between baseline and follow-up for each score when tested separately). CONCLUSIONS: AF recurrence rates after CA were higher in patients with HF compared with those without HF, with patients with HFpEF being at the highest risk of recurrence. Nonetheless, CA was associated with a significant reduction in AF symptoms, AF-related hospitalization, and HF symptoms in most patients irrespective of HF subtypes.

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Background: While patients with spontaneous coronary artery dissection (SCAD) occasionally present with concurrent ventricular arrhythmias (VA), the impact of VA on in-hospital outcomes in the United States (US) is not well-established. This study aims to analyze in-hospital outcomes of patients with SCAD and concurrent VA and to determine the factors associated with VA occurrence in this high-risk population in the US. Methods: Using the Nationwide Readmissions Database, our study included patients age 18 years or older who had SCAD between 2017 and 2020. We categorized the cohort into 2 groups depending on the presence of VA during hospitalization. In-hospital outcomes were assessed between SCAD patients with VA and those without. Weighted analysis was performed. We analyzed the independent factors associated with VA occurring among SCAD patients through univariable and multivariable analyses. Results: Eight hundred seventy-seven SCAD patients were included in the study: 118 (13.5%) with VA and 759 (86.6%) without. SCAD patients with concurrent VA were associated with higher rates of early mortality (10.2% vs 2.0%; P < .01), prolonged index hospital stay (≥7 days) (33.1% vs 11.7%; P < .01), and non-home discharge (21.2% vs 5.9%; P < .01). The length of hospital stay was longer in the SCAD with concurrent VA group (7.39 days vs 3.58 days; P < .01), and the median cumulative cost of hospitalization was also higher in this group ($31,451 vs $13,802; P < .01). SCAD patients with concurrent VA had increased in-hospital adverse events: acute heart failure, cardiac arrest, cardiogenic shock, cerebral infarction, pulmonary edema, and acute kidney injury. In multivariable analysis, the independent factors associated with VA occurrence among SCAD patients were chronic liver disease (aOR, 3.42; 95% CI, 1.43-8.20; P < .01) and heart failure (aOR, 5.63; 95% CI, 3.36-9.42; P < .01). Conclusions: Concurrence of VA among SCAD patients was associated with poorer in-hospital outcomes. Heart failure and chronic liver disease were the independent factors associated with VA occurrence in SCAD patients.

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INTRODUCTION: To minimize unused outpatient opioids while providing adequate pain control, we sought to create a model to predict outpatient opioid use following the minimally invasive repair of pectus excavatum with cryoablation MIRPE-C. METHODS: A retrospective review was conducted at a single center from May 2023 to January 2024 among patients <21 years who underwent MIPRE-C. Demographic and clinical data, including inpatient and outpatient opioid use were reviewed. Patients completed opioid use questionnaires at their first postoperative visit. Simple linear regression was employed to create a model for outpatient opioid use. RESULTS: Sixty-eight patients underwent MIRPE-C: 84% were male (mean age of 15.2 ± 1.7 years, and median Haller index 4.2[IQR:3.7-5.7]). Daily mean inpatient opioid requirement and daily opioid doses were 0.3 ± 0.2 OME/day/kg and 2 ± 1.2 opioid doses/day. At the first outpatient follow-up visit, patients reported using a median of five 5-mg oxycodone tablets [IQR:1.6-10] for 5 days [IQR:2-7] with 22% of patients needing an opioid refill. On linear regression, inpatient opioid use had a significant relationship with the number of outpatient doses taken, while patient factors were not associated with outpatient opioid use. A simple equation for predicting opioid need based on best fit (R2 = 0.211) was developed: #OUTPATIENT OPIOID TABLETS = 3 TABLETS + (0.82 x #INPATIENT OPIOID RECIEVED). CONCLUSION: The proposed outpatient opioid prescription model is simple to calculate and tailors the prescription to individual patient need. This model has the potential to provide effective pain control and avoid prescription refills, while minimizing over-prescription of opioids. LEVEL OF EVIDENCE: Treatment study Level III.

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Rationale: Pulmonary arterial hypertension (PAH) is a life-threatening progressive cardiopulmonary disease associated with high morbidity and mortality. Changes in the six-minute walk test (6MWT) provide prognostic information and help guide treatment decisions for PAH. However, since 6MWT requires in-clinic visits, clinical interventions to address disease progression may be delayed. Wearable technologies could reduce this delay by allowing the performance of 6MWT in the community and delivering data to clinicians remotely. Objectives: To perform a pilot study to determine the safety and feasibility of performing 6MWT in PAH outpatients using a wearable app-based tool. Methods: PAH patients recruited at Stanford University were provided an Apple Watch with an app to perform daily, self-administered 6MWT over 12 weeks. Bland-Altman plots and correlations were used to assess the agreement and reliability of in-clinic vs. app-based 6MWT data at the beginning and end of the 12-week trial. Measurements and Main Results: From 55 PAH participants, we collected 3,139 app-recorded walks during 979.7 patient-weeks of exposure. On average, participants performed 3±2.3 weekly walks. No serious adverse events were reported. App-derived walk distance was highly correlated ( r ≥ 0.9) to the baseline in-clinic 6MWD and showed excellent reliability (ICC=0.9). Correlation and agreement were significantly lower at the 12-week follow-up visit. App-derived metrics beyond 6MWD showed promising associations with disease status. Conclusions: App-based outpatient 6MWT is feasible, safe, reasonably accurate, likely clinically relevant, and reliable in PAH patients but long-term measurement stability may be a concern. App-derived digital measures beyond distance show promise for future applications.

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How viruses evolve to expand their host range is a major question with implications for predicting the next pandemic. Gain-of-function experiments have revealed that host-range expansions can occur through relatively few mutations in viral receptor-binding proteins, and the search for molecular mechanisms that explain such expansions is underway. Previous research on expansions of receptor use in bacteriophage λ has shown that mutations that destabilize λ's receptor-binding protein cause it to fold into new conformations that can utilize novel receptors but have weakened thermostability. These observations led us to hypothesize that other viruses may take similar paths to expand their host range. Here, we find support for our hypothesis by studying another virus, bacteriophage 21 (Φ21), which evolves to use two new host receptors within 2 weeks of laboratory evolution. By measuring the thermodynamic stability of Φ21 and its descendants, we show that as Φ21 evolves to use new receptors and expands its host range, it becomes less stable and produces viral particles that are genetically identical but vary in their thermostabilities. Next, we show that this non-genetic heterogeneity between particles is directly associated with receptor use innovation, as phage particles with more derived receptor-use capabilities are more unstable and decay faster. Lastly, by manipulating the expression of protein chaperones during Φ21 infection, we demonstrate that heterogeneity in receptor use of phage particles arises during protein folding. Altogether, our results provide support for the hypothesis that viruses can evolve new receptor-use tropisms through mutations that destabilize the receptor-binding protein and produce multiple protein conformers.

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Background: Previous research in sport populations has demonstrated that abnormal magnetic resonance imaging (MRI) findings may be present in individuals without symptoms or known pathology. Extending this understanding to ballet, particularly in relation to the foot and ankle, is important to guide medical advice given to dancers. Purpose: To assess foot and ankle MRI scans in asymptomatic ballet dancers focusing on bone marrow edema and the posterior ankle and to investigate whether these MRI findings would become symptomatic within 1 year. Study Design: Case series; Level of evidence, 4. Methods: In total, 31 healthy dancers (62 feet/ankles; 15 male and 16 female; age, 26.5 ± 4.3 years) who were dancing in full capacity were recruited from an elite professional ballet company. Orthogonal 3-plane short tau inversion recovery imaging of both feet and ankles was obtained using 3T MRI and the images were reviewed using a standardized evaluation form by 2 musculoskeletal radiologists. Injuries in the company were recorded and positive MRI findings were assessed for correlation with any injuries requiring medical attention during the subsequent 12 months. Results: A total of 51 (82%) of the 62 feet and ankles had ≥1 area of bone marrow edema. The most common locations of bone marrow edema were the talus (n = 41; 66%), followed by first metatarsal (n = 14; 23%). Os trigonum and Stieda process were seen in 5 (8%) and 8 (13%) ankles, respectively. Among them, 2 os trigona showed bone marrow edema. Fluid in the anterior and posterior talocrural joints and the subtalar joint was observed in 48%, 63%, and 63% of these joints, respectively. Fluid around foot and ankle tendons was observed, with the most prevalent being the flexor hallucis longus tendon (n = 13; 21%). Two dancers who had positive findings on their MRI subsequently developed symptoms during the next 12 months. Conclusion: Positive MRI findings are commonplace in the foot and ankle of asymptomatic professional ballet dancers. The majority do not result in the development of symptoms requiring medical attention within 12 months. Careful interpretation of MRI findings with the dancer's clinical picture is required before recommending activity modification or further intervention.

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Cytotoxic T lymphocytes (CTLs) mediate host defense against viral and intracellular bacterial infections and tumors. However, the magnitude of CTL response and their function needed to confer heterosubtypic immunity against influenza virus infection are unknown. We addressed the role of CD8+ T cells in the absence of any cross-reactive antibody responses to influenza viral proteins using an adenoviral vector expressing a 9mer amino acid sequence recognized by CD8+ T cells. Our results indicate that both CD8+ T cell frequency and function are crucial for heterosubtypic immunity. Low morbidity, lower viral lung titers, low to minimal lung pathology, and better survival upon heterosubtypic virus challenge correlated with the increased frequency of NP-specific CTLs. NP-CD8+ T cells induced by differential infection doses displayed distinct RNA transcriptome profiles and functional properties. CD8+ T cells induced by a high dose of influenza virus secreted significantly higher levels of IFN-γ and exhibited higher levels of cytotoxic function. The mice that received NP-CD8+ T cells from the high-dose virus recipients through adoptive transfer had lower viral titers following viral challenge than those induced by the low dose of virus, suggesting differential cellular programming by antigen dose. Enhanced NP-CD8+ T-cell functions induced by a higher dose of influenza virus strongly correlated with the increased expression of cellular and metabolic genes, indicating a shift to a more glycolytic metabolic phenotype. These findings have implications for developing effective T cell vaccines against infectious diseases and cancer. IMPORTANCE: Cytotoxic T lymphocytes (CTLs) are an important component of the adaptive immune system that clears virus-infected cells or tumor cells. Hence, developing next-generation vaccines that induce or recall CTL responses against cancer and infectious diseases is crucial. However, it is not clear if the frequency, function, or both are essential in conferring protection, as in the case of influenza. In this study, we demonstrate that both CTL frequency and function are crucial for providing heterosubtypic immunity to influenza by utilizing an Ad-viral vector expressing a CD8 epitope only to rule out the role of antibodies, single-cell RNA-seq analysis, as well as adoptive transfer experiments. Our findings have implications for developing T cell vaccines against infectious diseases and cancer.

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PURPOSE: The anatomy of the deltoid ligament is complex. There is agreement on the presence of superficial and deep layers but the number and frequency of fascicles remains controversial. Identifying injuries to specific components of the deltoid ligament may inform decision-making on their management. The anatomy was reviewed to establish the number and dimension of fascicles visible with three-dimensional (3D) volumetric magnetic resonance images (MRI). METHODS: Twenty ankles from asymptomatic healthy volunteers were imaged with 3D volumetric MRI. The presence of individual fascicles was recorded and measured in 3D. RESULTS: The median age of participants was 26 years (range: 20-37) of which 13 (65%) were female. All 20 ankles had a deltoid ligament formed of four fascicles in two layers: three fascicles in the superficial layer; tibionavicular (mean dimensions 22.5 × 10.0 × 2.4 mm), tibiospring (16.6 × 6.7 × 1.9 mm) and tibiocalcaneal (23.8 × 4.6 × 1.8 mm) and a deep layer consisting of the tibiotalar fascicle, which could be divided into two parts: anterior tibiotalar (mean dimensions 10 × 5.6 × 4.1 mm) and the significantly larger posterior tibiotalar (14.2 × 13.8 × 17.5 mm, p < 0.01). There were no additional fascicles observed. CONCLUSIONS: The deltoid ligament complex was consistently visualised as four fascicles (tibionavicular, tibiospring, tibiocalcaneal, tibiotalar) in two layers (superficial and deep) in all 20 ankles. The posterior part of the tibiotalar fascicle was the thickest of all the fascicles in the deltoid ligament. It is, therefore, possible to accurately identify the components of the deltoid ligament, and 3T MRI can be used to assess fascicle-specific injury, which will guide treatment and rehabilitation. LEVEL OF EVIDENCE: Level III.

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AIMS: Ventricular tachycardia (VT) non-inducibility in response to programmed ventricular stimulation (PVS) is a widely used procedural endpoint for VT ablation despite inconclusive evidence with respect to clinical outcomes in high-risk patients. The aim is to determine the utility of acute post-ablation VT inducibility as a predictor of VT recurrence, mortality, or mortality equivalent in high-risk patients. METHODS AND RESULTS: We conducted a retrospective analysis of high-risk patients (defined as PAINESD > 17) who underwent scar-related VT ablation at our institution between July 2010 and July 2022. Patients' response to PVS (post-procedure) was categorized into three groups: Group A, no clinical VT or VT with cycle length > 240 ms inducible; Group B, only non-clinical VT with cycle length > 240 ms induced; and Group C, all other outcomes (including cases where no PVS was performed). The combined primary endpoint included death, durable left ventricular assist device placement, and cardiac transplant (Cox analysis). Ventricular tachycardia recurrence was considered a secondary endpoint (competing risk analysis). Of the 1677 VT ablation cases, 123 cases met the inclusion criteria for analysis. During a 19-month median follow-up time (interquartile range 4-43 months), 82 (66.7%) patients experienced the composite primary endpoint. There was no difference between Groups A and C with respect to the primary [hazard ratio (HR) = 1.21 (0.94-1.57), P = 0.145] or secondary [HR = 1.18 (0.91-1.54), P = 0.210] outcomes. These findings persisted after multivariate adjustments. The size of Group B (n = 13) did not permit meaningful statistical analysis. CONCLUSION: The results of post-ablation PVS do not significantly correlate with long-term outcomes in high-risk (PAINESD > 17) VT ablation patients.

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PURPOSE OF REVIEW: To summarize the history of titanium implants in spine fusion surgery and its evolution over time. RECENT FINDINGS: Titanium interbody cages used in spine fusion surgery have evolved from solid metal blocks to porous structures with varying shapes and sizes in order to provide stability while minimizing adverse side effects. Advancements in technology, especially 3D printing, have allowed for the creation of highly customizable spinal implants to fit patient specific needs. Recent evidence suggests that customizing shape and density of the implants may improve patient outcomes compared to current industry standards. Future work is warranted to determine the practical feasibility and long-term clinical outcomes of patients using 3D printed spine fusion implants. Outcomes in spine fusion surgery have improved greatly due to technological advancements. 3D printed spinal implants, in particular, may improve outcomes in patients undergoing spine fusion surgery when compared to current industry standards. Long term follow up and direct comparison between implant characteristics is required for the adoption of 3D printed implants as the standard of care.

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Extracellular vesicles (EVs) are considered a vital component of cell-to-cell communication and represent a new frontier in diagnostics and a means to identify pathways for therapeutic intervention. Recently, studies have revealed the importance of tissue-derived EVs (Ti-EVs), which are EVs present in the interstitial spaces between cells, as they better represent the underlying physiology of complex, multicellular tissue microenvironments in biology and disease. EVs are native, lipid bilayer membraned nano-sized particles produced by all cells that are packaged with varied functional biomolecules including proteins, lipids, and nucleic acids. They are implicated in short- and long-range cellular communication and may elicit functional responses in recipient cells. To date, studies have often utilized cultured cells or biological fluids as a source for EVs that do not capture local molecular signatures of the tissue microenvironment. Recent work utilizing Ti-EVs has elucidated novel biomarkers for disease and provided insights into disease mechanisms that may lead to the development of novel therapeutic agents. Still, there are considerable challenges facing current studies. This review explores the vast potential and unique challenges for Ti-EV research and provides considerations for future studies that seek to advance this exciting field.

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INTRODUCTION: Since the integration of the intern year into urology residencies, programs are mandated to introduce fundamental skills to junior residents. Our goal was to assess the impact of one such program: the 2023 New York Section of the AUA (NYS-AUA) EMPIRE (Educational Multi-institutional Program for Instructing REsidents) Boot Camp. METHODS: Junior urology residents from all 10 NYS-AUA institutions attended a free EMPIRE Boot Camp on June 9, 2023. The seminar covered procedural skills including urethral catheterization, cystoscopy, renal and bladder ultrasound, transrectal prostate ultrasound with biopsy, and an introduction to robotics/laparoscopy. Sessions focused on urologic emergencies and postoperative scenarios. Participants completed questionnaires before, immediately after, and 6 months post course, assessing comfort with procedures and overall program quality using a 5-point Likert scale and free text responses. t Tests compared pre and immediate/6-month post scores. RESULTS: Forty junior residents, along with faculty and resident instructors from all 10 NYS-AUA programs, participated. Of the 40 trainees, 35 (87.5%) completed pre- and immediate post-boot camp surveys, while 23 (57.5%) responded to the 6-month follow-up survey. Ratings showed significant improvement in comfort with basic urologic technical skills for 13 out of 14 domains (93%) immediately after the course and at the 6-month mark. Attendees reported notably higher comfort levels in managing obstructive pyelonephritis (P = .003) and postoperative complications (P = .001) following didactic sessions. CONCLUSIONS: A skills-based, free collaborative urology boot camp for junior residents is feasible and can be effective. Trainees reported improved comfort performing certain technical skills and managing urologic emergencies both immediately after the course and at 6 months of follow-up.

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