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The integration of low-energy states into bottom-up engineered graphene nanoribbons (GNRs) is a robust strategy for realizing materials with tailored electronic band structure for nanoelectronics. Low-energy zero-modes (ZMs) can be introduced into nanographenes (NGs) by creating an imbalance between the two sublattices of graphene. This phenomenon is exemplified by the family of [n]triangulenes (n ∈ N). Here, we demonstrate the synthesis of [3]triangulene-GNRs, a regioregular one-dimensional (1D) chain of [3]triangulenes linked by five-membered rings. Hybridization between ZMs on adjacent [3]triangulenes leads to the emergence of a narrow band gap, Eg,exp â¼ 0.7 eV, and topological end states that are experimentally verified using scanning tunneling spectroscopy. Tight-binding and first-principles density functional theory calculations within the local density approximation corroborate our experimental observations. Our synthetic design takes advantage of a selective on-surface head-to-tail coupling of monomer building blocks enabling the regioselective synthesis of [3]triangulene-GNRs. Detailed ab initio theory provides insights into the mechanism of on-surface radical polymerization, revealing the pivotal role of Au-C bond formation/breakage in driving selectivity.
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PURPOSE: Urodynamic testing (UDS) is an important tool in the management of pediatric lower urinary tract conditions. There have been notable efforts to standardize pediatric UDS nomenclature and technique, but no formal guidelines exist on essential elements to include in a clinical report. We sought to identify ideal structure and elements of a pediatric UDS assessment based on expert consensus. MATERIALS AND METHODS: Pediatric urologists regularly performing UDS were queried using a Delphi process. Participants were invited representing varied geographic, experience, and societal involvement. Participants underwent 3 rounds of questionnaires between November 2022 and August 2023 focusing on report organization, elements, definitions, and automated electronic health record clinical decision support. Professional billing requirements were also considered. Consensus was defined as 80% agreeing either in favor of or against a topic. Elements without consensus were discussed in subsequent rounds. RESULTS: A diverse sample of 30 providers, representing 27 institutions across 21 US states; Washington, District of Columbia; and Canada completed the study. Participants reported interpreting an average number of 5 UDS reports per week (range 1-22). The finalized consensus report identifies 93 elements that should be included in a pediatric UDS report based on applicable study conditions and findings. CONCLUSIONS: This consensus report details the key elements and structure agreed upon by an expert panel of pediatric urologists. Further standardization of documentation should aid collaboration and research for patients undergoing UDS. Based on this information, development of a standardized UDS report template using electronic health record implementation principles is underway, which will be openly available for pediatric urologists.
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Consenso , Técnica Delphi , Urodinámica , Humanos , Niño , Urología/normas , Pediatría/normas , Masculino , Encuestas y CuestionariosRESUMEN
BACKGROUND: Identifying severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections during peripartum hospitalizations is important to guide care, implement prevention measures, and understand infection burden. METHODS: This cross-sectional analysis used electronic health record data from hospitalizations during which pregnancies ended (peripartum hospitalizations) among a cohort of pregnant persons at 3 US integrated healthcare networks (sites 1-3). Maternal demographic, medical encounter, SARS-CoV-2 testing, and pregnancy and neonatal outcome information was extracted for persons with estimated delivery and pregnancy end dates during March 2020-February 2021 and ≥1 antenatal care record. Site-stratified multivariable logistic regression was used to identify factors associated with testing and compare pregnancy and neonatal outcomes among persons tested. RESULTS: Among 17 858 pregnant persons, 10 863 (60.8%) had peripartum SARS-CoV-2 testing; 222/10 683 (2.0%) had positive results. Testing prevalence varied by site and was lower during March-May 2020. Factors associated with higher peripartum SARS-CoV-2 testing odds were Asian race (adjusted odds ratio [aOR]: 1.36; 95% confidence interval [CI]: 1.03-1.79; referent: White) (site 1), Hispanic or Latino ethnicity (aOR: 1.33; 95% CI: 1.08-1.64) (site 2), peripartum Medicaid coverage (aOR: 1.33; 95% CI: 1.06-1.66) (site 1), and preterm hospitalization (aOR: 1.69; 95% CI: 1.19-2.39 [site 1]; aOR: 1.39; 95% CI: 1.03-1.88 [site 2]). CONCLUSIONS: Findings highlight potential disparities in SARS-CoV-2 peripartum testing by demographic and pregnancy characteristics. Testing practice variations should be considered when interpreting studies relying on convenience samples of pregnant persons testing positive for SARS-CoV-2. Efforts to address testing differences between groups could improve equitable testing practices and care for pregnant persons with SARS-CoV-2 infections.
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COVID-19 , Complicaciones Infecciosas del Embarazo , Recién Nacido , Femenino , Embarazo , Humanos , SARS-CoV-2 , COVID-19/diagnóstico , COVID-19/epidemiología , Prueba de COVID-19 , Estudios Transversales , Periodo Periparto , Complicaciones Infecciosas del Embarazo/diagnóstico , Complicaciones Infecciosas del Embarazo/epidemiología , HospitalizaciónRESUMEN
BACKGROUND: Data about the risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among pregnant individuals are needed to inform infection-prevention guidance and counseling for this population. METHODS: We prospectively followed a cohort of pregnant individuals during August 2020-March 2021 at 3 US sites. The 3 primary outcomes were incidence rates of any SARS-CoV-2 infection, symptomatic infection, and asymptomatic infection, during pregnancy during periods of SARS-CoV-2 circulation. Participants self-collected weekly midturbinate nasal swabs for SARS-CoV-2 reverse transcription-polymerase chain reaction testing, completed weekly illness symptom questionnaires, and submitted additional swabs with coronavirus disease 2019 (COVID-19)-like symptoms. An overall SARS-CoV-2 infection incidence rate weighted by population counts of women of reproductive age in each state was calculated. RESULTS: Among 1098 pregnant individuals followed for a mean of 10 weeks, 9% (99/1098) had SARS-CoV-2 infections during the study. Population-weighted incidence rates of SARS-CoV-2 infection were 10.0 per 1000 (95% confidence interval, 5.7-14.3) person-weeks for any infection, 5.7 per 1000 (1.7-9.7) for symptomatic infections, and 3.5 per 1000 (0-7.1) for asymptomatic infections. Among 96 participants with SARS-CoV-2 infections and symptom data, the most common symptoms were nasal congestion (72%), cough (64%), headache (59%), and change in taste or smell (54%); 28% had measured or subjective fever. Median symptom duration was 10 (interquartile range, 6-16) days. CONCLUSIONS: Pregnant individuals in this study had a 1% risk of SARS-CoV-2 infection per week, underscoring the importance of COVID-19 vaccination and other prevention measures during pregnancy while SARS-CoV-2 is circulating in the community.
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COVID-19 , SARS-CoV-2 , Infecciones Asintomáticas/epidemiología , COVID-19/diagnóstico , COVID-19/epidemiología , Vacunas contra la COVID-19 , Femenino , Humanos , Incidencia , Embarazo , Factores de Riesgo , Estados Unidos/epidemiologíaRESUMEN
OBJECTIVE: The aim of the study was to evaluate pregnant women's attitudes toward COVID-19 illness and vaccination and identify factors associated with vaccine acceptability. STUDY DESIGN: This was a cross-sectional survey among pregnant women enrolled in a prospective COVID-19 cohort study in Salt Lake City, UT, Birmingham, AL, and New York, NY, from August 9 to December 10, 2020. Women were eligible if they were 18 to 50 years old and <28 weeks of gestation. Upon enrollment, women completed surveys regarding concerns about COVID-19 illness and likelihood of getting COVID-19 vaccine if one were available during pregnancy. Vaccine acceptability was defined as a response of "very likely" or "somewhat likely" on a 4-point Likert scale. Factors associated with vaccine acceptability were assessed with multivariable logistic regression. RESULTS: Of 939 pregnant women eligible for the main cohort study, 915 (97%) consented to participate. Among these 915 women, 39% self-identified as White, 23% Black, 33% Hispanic, and 4% Other. Sixty-two percent received an influenza vaccine last season. Seventy-two percent worried about getting sick with COVID-19. If they were to get sick, 92% worried about harm to their pregnancy and 80% about harm to themselves. Only 41% reported they would get a vaccine. Of women who were unlikely to get vaccinated, the most frequently cited concern was vaccine safety for their pregnancy (82%). Non-Hispanic Black and Hispanic women had lower odds of accepting a vaccine compared with non-Hispanic White women (adjusted odds ratios [aOR] 0.4, 95% CI 0.2-0.6 for both). Receipt of influenza vaccine during the previous season was associated with higher odds of vaccine acceptability (aOR 2.1, 95% CI 1.5-3.0). CONCLUSION: Although most pregnant women worried about COVID-19 illness, <50% were willing to get vaccinated during pregnancy. Racial and ethnic disparities in plans to accept COVID-19 vaccine highlight the need to prioritize strategies to address perceived barriers among groups at high risk for COVID-19. KEY POINTS: · Less than half of pregnant patients stated they would get a COVID-19 vaccine.. · Protecting their baby was the most common reason for acceptance and refusal of the COVID-19 vaccine.. · Patients of minority race/ethnicity and those without prior influenza vaccination were less likely to accept the COVID-19 vaccine..
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COVID-19/prevención & control , Aceptación de la Atención de Salud/psicología , Mujeres Embarazadas/psicología , Vacilación a la Vacunación/estadística & datos numéricos , Vacunación/psicología , Adolescente , Adulto , Negro o Afroamericano/estadística & datos numéricos , Vacunas contra la COVID-19/efectos adversos , Estudios Transversales , Femenino , Hispánicos o Latinos/estadística & datos numéricos , Humanos , Vacunas contra la Influenza , Gripe Humana/prevención & control , Persona de Mediana Edad , Aceptación de la Atención de Salud/etnología , Aceptación de la Atención de Salud/estadística & datos numéricos , Embarazo , Estudios Prospectivos , SARS-CoV-2 , Encuestas y Cuestionarios , Vacunación/estadística & datos numéricos , Vacilación a la Vacunación/etnología , Población Blanca/estadística & datos numéricos , Adulto JovenRESUMEN
OBJECTIVES: To understand the epidemiology of acute hematogenous osteomyelitis and septic arthritis, including clinical and demographic features, microbiology, treatment approaches, treatment-associated complications, and outcomes. STUDY DESIGN: Retrospective cohort study of 453 children with acute hematogenous osteomyelitis and/or septic arthritis from 2009 to 2015. RESULTS: Among the 453 patients, 218 (48%) had acute hematogenous osteomyelitis, 132 (29%) had septic arthritis, and 103 (23%) had concurrent acute hematogenous osteomyelitis/septic arthritis. Treatment failure/recurrent infection occurred in 41 patients (9%). Patients with concurrent acute hematogenous osteomyelitis/septic arthritis had longer hospital stays, longer duration of antibiotic therapy, and were more likely to have prolonged bacteremia and require intensive care. Staphylococcus aureus was identified in 228 (51%) patients, of which 114 (50%) were methicillin-resistant S aureus. Compared with septic arthritis, acute hematogenous osteomyelitis and concurrent acute hematogenous osteomyelitis/septic arthritis were associated with higher odds of treatment failure (OR, 8.19; 95% CI, 2.02-33.21 [P = .003]; and OR, 14.43; 95% CI, 3.39-61.37 [P < .001], respectively). The need for more than 1 surgical procedure was also associated with higher odds of treatment failure (OR, 2.98; 95% CI, 1.18-7.52; P = .021). Early change to oral antibiotic therapy was not associated with treatment failure (OR, 0.64; 95% CI, 0.24-1.74; P = .386). Most (73%) medically attended treatment complications occurred while on parenteral therapy. CONCLUSIONS: Musculoskeletal infections are challenging pediatric infections. S aureus remains the most common pathogen, with methicillin-resistant S aureus accounting for 25% of all cases. Concurrent acute hematogenous osteomyelitis/septic arthritis is associated with more severe disease and worse outcomes. Fewer treatment-related complications occurred while on oral therapy. Early transition to oral therapy was not associated with treatment failure.
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Antibacterianos/uso terapéutico , Artritis Infecciosa/epidemiología , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Grampositivas/epidemiología , Procedimientos Ortopédicos , Osteomielitis/epidemiología , Enfermedad Aguda , Administración Oral , Adolescente , Artritis Infecciosa/diagnóstico , Artritis Infecciosa/microbiología , Artritis Infecciosa/terapia , Niño , Preescolar , Terapia Combinada , Femenino , Infecciones por Bacterias Gramnegativas/diagnóstico , Infecciones por Bacterias Gramnegativas/microbiología , Infecciones por Bacterias Gramnegativas/terapia , Infecciones por Bacterias Grampositivas/diagnóstico , Infecciones por Bacterias Grampositivas/microbiología , Infecciones por Bacterias Grampositivas/terapia , Humanos , Lactante , Modelos Logísticos , Masculino , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación , Osteomielitis/diagnóstico , Osteomielitis/microbiología , Osteomielitis/terapia , Estudios Retrospectivos , Infecciones Estafilocócicas/diagnóstico , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/microbiología , Infecciones Estafilocócicas/terapia , Resultado del Tratamiento , Estados Unidos/epidemiologíaRESUMEN
Background: Trichomoniasis results from adhesion of Trichomonas vaginalis to the mucous membrane of the urethra or vagina. It has been estimated to have a higher incidence rate than both gonorrhea and chlamydia combined. Although females can experience both clinical symptoms and obstetrical complications, male infections are largely asymptomatic and often unreported. We aim to estimate the prevalence of trichomoniasis in US males using the National Health and Nutrition Examination Survey (NHANES) database. Methods: The NHANES database was queried for all men aged 18-59 years during the years 2013-2016. During these years, the survey included urine testing for trichomoniasis using transcription-mediated amplification. Information was also obtained regarding patient demographics and other sexually transmitted infections. Results: Overall, 0.49% of men aged 18-59 years tested positive for trichomoniasis. The highest rate was seen in black men (3.6%). There was no significant association with trichomoniasis and age. Higher rates of infection were seen in smokers, those with herpes simplex virus type 2 (HSV-2) infection, men who had sex at an early age, those with less condom usage, and those with more lifetime sexual partners. Conclusion: The rates of trichomonas infection in US males are lower than in women. Infections are strongly associated with black males, HSV-2 infection, and other factors known to increase rates of sexually transmitted infection. This information may be helpful for counseling, screening, and management of patients.
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Tricomoniasis/epidemiología , Trichomonas vaginalis/aislamiento & purificación , Adolescente , Adulto , Estudios Transversales , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Factores de Riesgo , Estados Unidos/epidemiología , Adulto JovenRESUMEN
While the majority of reported paired electrochemical reactions involve carefully matched cathodic and anodic reactions, the precise matching of half reactions in an electrolysis cell is not generally necessary. During a constant current electrolysis almost any oxidation and reduction reaction can be paired, and in the presented work we capitalize on this observation by examining the coupling of anodic oxidation reactions with the production of hydrogen gas for use as a reagent in remote, Pd-catalyzed hydrogenation and hydrogenolysis reactions. To this end, an alcohol oxidation, an oxidative condensation, intramolecular anodic olefin coupling reactions, an amide oxidation, and a mediated oxidation were all shown to be compatible with the generation and use of hydrogen gas at the cathode. This pairing of an electrolysis reaction with the production of a chemical reagent or substrate has the potential to greatly expand the use of more energy efficient paired electrochemical reactions.
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The direct impact of vaccines on children is well described, but the major public health impact of indirect protection provided to the community by vaccines is underappreciated. Community protection occurs when vaccinated persons block the chain of transmission, protecting undervaccinated or unvaccinated susceptible community members by preventing exposure and limiting the spread of the pathogen through the community. Substantial declines in disease incidence have occurred shortly after implementing new childhood vaccines, including declines among vaccine-ineligible children, adolescents, and adults. Protection of susceptible community members depends on maintaining high vaccination rates. Improved recognition of community protection will strengthen childhood vaccination strategies that will protect our communities into the future.
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Inmunidad Colectiva , Salud Pública/métodos , Vacunación , Vacunas/administración & dosificación , Niño , Preescolar , Humanos , LactanteRESUMEN
INTRODUCTION: Human papillomavirus (HPV) is a common sexually transmitted infection in the United States that can lead to both malignant (high-risk) and benign (low-risk) findings. These low-risk findings include both genital condyloma, anal warts, and adult or juvenile papillomatosis, which are directly attributable to subtypes HPV 6 and HPV 11. We aim to estimate the prevalence of genital wart infections in men in the US population using a nationwide sample. METHODS: The NHANES database was queried for all men aged 18 to 59 years during the years 2013 to 2014. During these years, the survey included penile swabs that were tested for HPV infection from 37 subtypes using PCR. Information was also obtained regarding patient reported history of having a genital wart infection previously. RESULTS: A total of 1757 men had information regarding HPV DNA. Fifty-three men tested positive for HPV 6 or HPV 11 DNA. This corresponds to an estimated prevalence of 2.9% (95% confidence interval, 2.2-3.8) of men aged 18-59 years. In addition, 2.2% (95% confidence interval, 1.5-3.3) of men reported a history of genital wart infection. There was no significant association with genital HPV DNA detection with age. Increasing number of sexual partners was associated with higher rates of both genital warts and HPV 6 and HPV 11 DNA. CONCLUSIONS: The estimated prevalence of genital HPV DNA in the US male population is 2.9%. This burden of disease could potentially be lowered with increased usage of quadrivalent and nonavalent vaccinations.
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Condiloma Acuminado/epidemiología , Papillomaviridae/genética , Infecciones por Papillomavirus/epidemiología , Pene/virología , Adolescente , Adulto , Estudios Transversales , ADN Viral/genética , Papillomavirus Humano 11/genética , Papillomavirus Humano 11/aislamiento & purificación , Papillomavirus Humano 6/genética , Papillomavirus Humano 6/aislamiento & purificación , Humanos , Masculino , Persona de Mediana Edad , Encuestas Nutricionales , Papillomaviridae/aislamiento & purificación , Reacción en Cadena de la Polimerasa , Prevalencia , Factores de Riesgo , Conducta Sexual , Parejas Sexuales , Enfermedades de Transmisión Sexual/epidemiología , Enfermedades de Transmisión Sexual/virología , Estados Unidos/epidemiología , Adulto JovenRESUMEN
INTRODUCTION: Since the advent of prostate-specific antigen (PSA) screening there has been a decreased incidence of lymph node positive disease (LND). Nevertheless, because of possible upgrading, LND is frequently performed with preoperative Gleason 6 prostate cancer. We utilized the Surveillance Epidemiology and End Results (SEER) database to evaluate the frequency of LND and preoperative variables for node positivity in contemporary patients with preoperative Gleason 6 disease. MATERIALS AND METHODS: SEER-18 registries database was queried for all patients diagnosed with prostate cancer between the years 2010 and 2014. Patients were excluded that had unknown histology or unknown preoperative or postoperative Gleason score. We evaluated the rate of LND, Gleason upgrading, and node positive events. RESULTS: There were 16,544 patients with preoperative Gleason 6 disease that met our inclusion criteria. Of these, 35.4% (5,856 patients) had LND and 64.6% (10,688 patients) did not. Gleason upgrade on final pathology was found in 51.9% and 45.0% of the LND and no LND cohorts, respectively. There were only 62 (1.1%) patients with node positive disease following LND. These patients had higher preoperative PSA and clinical stage disease. CONCLUSION: In a contemporary cohort of patients with preoperative Gleason 6 prostate cancer LND continues to be performed in about 35% of cases. Despite significant rate of Gleason upgrading on final pathology, only 1% will have node positive disease. With available data on morbidity of LND, the LND for preoperative Gleason 6 prostate in contemporary PSA screened cancer cohorts is likely not warranted.
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Escisión del Ganglio Linfático , Ganglios Linfáticos/patología , Ganglios Linfáticos/cirugía , Neoplasias de la Próstata/patología , Anciano , Biopsia , Humanos , Metástasis Linfática , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Pelvis , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/sangre , Programa de VERF , Procedimientos InnecesariosRESUMEN
PURPOSE: The renal cell cancer incidence is relatively low in younger patients, encompassing 3% to 7% of all renal cell cancers. While young patients may have renal tumors due to hereditary syndromes, in some of them sporadic renal cancers develop without any family history or known genetic mutations. Our recent observations from clinical practice have led us to hypothesize that there is a difference in histological distribution in younger patients compared to the older cohort. MATERIALS AND METHODS: We queried the SEER (Surveillance, Epidemiology and End Results) 18-registry database for all patients 20 years old or older who were surgically treated for renal cell carcinoma between 2001 and 2008. Patients with unknown race, grade, stage or histology and those with multiple tumors were excluded from study. Four cohorts were created by dividing patients by gender, including 1,202 females and 1,715 males younger than 40 years old, and 18,353 females and 30,891 males 40 years old or older. Chi-square analysis was used to compare histological distributions between the cohorts. RESULTS: While clear cell carcinoma was still the most common renal cell cancer subtype across all genders and ages, chromophobe renal cell cancer was the most predominant type of nonclear renal cell cancer histology in young females, representing 62.3% of all nonclear cell renal cell cancers (p <0.0001). In all other groups papillary renal cell cancer remained the most common type of nonclear renal cell cancer. CONCLUSIONS: It is possible that hormonal factors or specific pathway dysregulations predispose chromophobe renal cell cancer to develop in younger women. We hope that this work provides some new observations that could lead to further studies of gender and histology specific renal tumorigenesis.
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Carcinoma de Células Renales/epidemiología , Neoplasias Renales/epidemiología , Adulto , Distribución por Edad , Bases de Datos Factuales , Humanos , Masculino , Programa de VERF , Distribución por Sexo , Adulto JovenRESUMEN
Renal cell carcinoma is most common in patients in the seventh decade of life. However, renal cell carcinoma (RCC) patients under the age of 40 represent 3-7% of all renal tumors. These young patients develop RCC from a variety of mechanisms including genetic syndromes, heritable mutations, and sporadic mutations. This population encompasses a distinct clinical entity that requires early identification and adjustments in standard practices including sometimes-aggressive surgical measures in order to improve oncologic management.
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Carcinoma de Células Renales/epidemiología , Neoplasias Renales/epidemiología , Factores de Edad , Salud Global , Humanos , Incidencia , Adulto JovenRESUMEN
BACKGROUND: Pediatric urolithiasis has been increasing at rate of 4-10 % annually in the United States, most notably within adolescents and females. A significant number of patients will require surgical management of their stones. Primary ureteroscopy (URS) affords the opportunity to treat stones under a single anesthetic with lower re-treatment rates or anatomical and stone characteristic limitations compared to shockwave lithotripsy. Previous studies evaluating primary URS have been largely underpowered, are limited by stone location, and/or are not representative of the stone population in the United States. OBJECTIVES: Primary study outcomes were the success of primary URS and patient characteristics associated with success. Secondary outcomes were the stone-free rate (SFR), 30-day emergency department (ED) visits, 30-day readmissions, and complications. METHODS: We performed a retrospective cohort study of patients less than 18 years of age from 2011 to 2023 who underwent primary URS. Patients were excluded if a ureteral stent was placed prior to URS or diagnostic URS was performed. A successful primary URS was considered if access to the ureter was obtained and treatment of the stone(s) completed. In failed primary URS, a ureteral stent was placed for staged management. RESULTS: A total of 196 patients were included and primary URS was performed or attempted on 224 renal units. The median age was 15.8 (IQR 13.4-16.9) years and median follow up 8.4 (IQR 1.1-24.6) months. The success rate of primary URS was 79 %. No significant characteristics were appreciated for successful primary URS based on: overall age, <14 vs > 14 years of age, sex, body mass index, history of stones, history of endourologic procedures, preoperative alpha blockade, location of stone(s), multiple stones, type of URS, or acute treatment. In successful primary URS, the SFR was 88 % with stone size (p = 0.0001) the only predictor of having residual stones. The 30-day ED rate was 21.4 %, 30-day unplanned readmission rate was 12.5 %, and complication rate was 7.5 %. No long-term complications were appreciated. DISCUSSION: Our success of primary URS compares favorably to previously published literature. Our SFR rate, 30-day ED visits, 30-day unplanned readmission, and complication rates are similar to other studies. Limitations of the study are its retrospective design, selection bias, and intermediate follow-up. CONCLUSIONS: Primary URS can be completed safely in the majority of pediatric patients without any patient characteristics associated with success. We advocate for primary URS when possible due to the excellent SFR and potential of treating stones under a single anesthetic.
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BACKGROUND: With the use of multimodal treatments and hematopoietic stem cell transplant, the majority of children diagnosed with malignancies and hematologic diseases are now surviving into adulthood. Due to the gonadotoxic effects and potential for future infertility associated with many of these treatments, fertility counseling with sperm cryopreservation prior to starting therapy is the standard of care for post-pubertal males. Unfortunately, the options are limited for pre-pubertal patients or those unable to provide a specimen. Testicular tissue cryopreservation (TTC) is an investigational method to surgically obtain germ cells from testicular tissue and potentially restore future spermatogenesis. While TTC has been shown to be safe, little is reported on the time to treatment following the procedure to ensure adequate wound healing and avoid delays in definitive therapy. OBJECTIVES: The primary outcome was the time to initiation of treatment following TTC. Secondary outcomes were complication rates, delays in treatment due to TTC, and presence of germ cells. METHODS: We conducted a single-institution retrospective cohort study of patients undergoing TTC between 2017 and 2023. Patients at significant risk for treatment related infertility based on established criteria were eligible for TTC. Patients were excluded if they received their oncology or hematology care elsewhere. All patients were enrolled in an IRB approved research protocol with 75% of the tissue submitted for cryopreservation and 25% for research purposes. Time to therapy was defined as the first receipt of gonadotoxic treatment following TTC. RESULTS: A total of 122 patients (53 = malignant, 69 = non-malignant) underwent TTC with a median age of 5.9 years (IQR 2.3-9.35). Germ cells were identified in 115 (94%) specimens. A total of 109 (89%) patients underwent concomitant procedures. The median time to initiation of therapy was 5 (IQR 1.0-7.0) and 7 days (IQR 6.0-13.0) for malignant and non-malignant disease, respectively. The 30-day surgical complication rate was 2.5% and was similar between malignant vs non-malignant diagnoses (p = 0.58). All surgical complications were managed non-operatively. No patients had a delay in definitive treatment due to concern for wound healing or complications. DISCUSSION: Our surgical complication rates are similar to previous studies and are not affected by the time to treatment following TTC. Limitations of the study are its retrospective design, single institution, and short-term follow up. CONCLUSION: TTC can be performed safely, efficiently, and in conjunction with other necessary procedures without resulting in delays of definitive treatment. TTC affords the opportunity for fertility preservation in children who have no other options.
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Criopreservación , Trasplante de Células Madre Hematopoyéticas , Testículo , Tiempo de Tratamiento , Humanos , Masculino , Criopreservación/métodos , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Trasplante de Células Madre Hematopoyéticas/métodos , Estudios Retrospectivos , Niño , Preservación de la Fertilidad/métodos , Preescolar , Adolescente , Neoplasias/terapia , Estudios de CohortesRESUMEN
BACKGROUND: Anorectal malformations (ARM) are associated with neurogenic bladder. The traditional surgical ARM repair is a posterior sagittal anorectoplasty (PSARP), which is believed to have a minimal effect on bladder dynamics. However, little is known about the effects of reoperative PSARP (rPSARP) on bladder function. We hypothesized that a high rate of bladder dysfunction existed in this cohort. METHODS: We performed a retrospective review of ARM patients undergoing rPSARP at a single institution from 2008 to 2015. Only patients with Urology follow-up were included in our analysis. Data was collected regarding original level of ARM, coexisting spinal anomalies and indications for reoperation. We assessed urodynamic variables and bladder management (voiding, CIC or diverted) before and after rPSARP. RESULTS: A total of 172 patients were identified, of which 85 met inclusion criteria with a median follow-up of 23.9 months (IQR, 5.9-43.8 months). Thirty-six patients had spinal cord anomalies. Indications for rPSARP included mislocation (n = 42), posterior urethral diverticulum (PUD; n = 16), stricture (n = 19) and rectal prolapse (n = 8). Within 1 year following rPSARP, 11 patients (12.9%) had a negative change in bladder management, defined as need for beginning intermittent catheterization or undergoing urinary diversion, which increased to 16 patients (18.8%) at last follow-up. Postoperative bladder management changed in rPSARP patients with mislocation (p < 0.0001) and stricture (p 0.005) but not for rectal prolapse (p 0.143). CONCLUSIONS: Patients who undergo rPSARP warrant especially close attention for bladder dysfunction as we observed a negative postoperative change in bladder management in 18.8% of our series. LEVEL OF EVIDENCE: Level IV.