Urine Collection Method Research Articles

Optimizing Human Papillomavirus (HPV) Screening: Urine Sample Analysis and Associated Factors in Uzbekistan.

Objective This study assessed the accuracy of detecting Human Papillomavirus (HPV) DNA in urine samples compared to cervical samples and identified factors associated with HPV DNA positivity in Uzbekistan. Methods A total of 218 paired urine and cervical samples were collected from women in Uzbekistan. HPV DNA was detected using polymerase chain reaction (PCR) with genotyping. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and Cohen's Kappa coefficient were calculated. Univariate and multivariate analyses were conducted to identify factors associated with HPV DNA positivity. Results The study included 32.6% (71/218) positive HPV DNA by cervical samples, which demonstrated 19.7% (43/218) HPV DNA presence by urine samples. Urine HPV testing had a sensitivity of 57.7%, specificity of 98.6%, PPV of 95.3%, NPV of 82.9%, and Kappa coefficient of 60.1. To reveal factors associated with HPV DNA positivity, we set the positive 71 cases as the main group, and 147 negative samples as the control group. The results of the multivariate analysis found the association between HPV DNA positivity and included age 31-40 years (AOR=8.2), working as medical staff (AOR=7.51), condom use (AOR=0.12), having foamy (AOR=7.26) or purulent (AOR=6.84) vaginal discharge. Conclusion Urine HPV testing showed good agreement with cervical samples, although sensitivity was lower than some previous reports. Several sociodemographic and clinical factors were associated with HPV DNA positivity. Further optimization of urine collection, storage, and testing methods may improve sensitivity. Targeted screening of high-risk groups could enhance HPV prevention strategies in Uzbekistan.

Refining urine collection in mice: Development of an innovative urine collection device.

Urine collection can be challenging in studies involving small rodents like mice, as the actual methods of collection are anxiogenic and constrain animal welfare while having high variability in the volume of urine collected. To improve the current methods and eventually reduce the impact on the well-being of mice, we developed an innovative 3D-printed urine collection device (UCD). This two-compartment UCD is shaped to fit in classical husbandry cages and allows urine collection by spontaneous urination from two mice housed in their own cage without cross-contamination while enabling potential social interactions. We used our UCD to study the evolution of urinary parameters related to renal functions in a model of antibody-mediated chronic kidney disease. Overall, we report here a time-saving and affordable method for urine collection providing a large amount of uncontaminated urine and which we believe may improve animal welfare in comparison with other methods.

Feasibility of Assessment of Habitual Salt Intake Using a 24-h Urinary Salt Excretion Self-Measuring Device.

To assess habitual salt intake, tools are needed to measure 24-h urinary salt excretion repeatedly. We developed and validated a new portable salt monitor, which measures salt excreted per urination and sums the values to provide an accurate estimate of urinary salt excretion over 24 h. A previously developed salt monitor was improved with respect to the capacity, volume sensors, and equation for urinary sodium chloride concentration estimation. In 20 healthy Japanese female volunteers, 24-h urinary salt excretion was measured using the salt monitor and a conventional 24-h urine collection method on eight nonconsecutive days. In a total of 157 days, there were no fixed or proportional errors between the methods. The mean salt intake over 8 days was 8.5 ± 2.0 g/day for the 24-h urine collection and 8.3 ± 2.3 g/day for the salt monitor, showing a strong correlation (r = 0.912, p < 0.001). At a cut-off value of 6 g, the salt monitor was able to completely classify individuals by habitual salt intake. The validity of the new salt monitor was confirmed. The device can be considered an alternative to the traditional 24-h urine collection for repeated surveys and self-management of daily salt intake.

Disposable Absorbent Swab Urine Collecting in Cognitively Impaired and/or Frequent to Fully Incontinent Individuals

This whitepaper examines the prevalent challenges and negative implications of using disposable absorbent product swabs for urine collection in cognitively impaired and/or frequent to fully incontinent individuals. Despite the growing use of this method in healthcare settings, it needs to be revised and or eliminated due to the high risk of contamination, leading to misdiagnoses, inappropriate antibiotic prescribing, patient discomfort, and wasteful healthcare spending. Through an analysis of the current practices, this paper highlights the need for innovative solutions prioritizing patient dignity, diagnostics accuracy, and care efficiency. The objective is to focus on scientifically researching and developing validated urine collection methods that reduce the risk of contamination.

Review of Urinary Tract Infections and Pyelonephritis

Urinary tract infections (UTIs) are serious bacterial infections affecting children of all ages. An understanding of the methods of urine collection is important to prevent the contamination of urine specimens and to interpret results. The diagnosis of a UTI requires appropriate interpretation of both urinalysis and urine culture results because testing must indicate evidence of inflammation and the presence of bacteria. Rapid treatment of UTIs is imperative to prevent acute decompensation and systemic illness. Empiric antibiotics should be narrowed as soon as possible to tailor antibiotic treatment and limit antibiotic overuse. Imaging with a renal ultrasound scan is recommended for all infants with first febrile UTIs rather than a voiding cystourethrogram. An additional goal of UTI treatment is to prevent renal scarring, which can lead to lifelong health consequences. Children with anatomic abnormalities of the urinary tract and those who have recurrent UTIs are at increased risk of renal scarring. [ Pediatr Ann . 2024;53(6):e217–e222.]

111 Current and future usage of soybean meal in swine diets in China

Abstract The objective of this presentation was to introduce the utilization tendency and research progress of soybean meal (SBM) in swine diets in China. As for the utilization tendency of SBM in China, it not only brings great pressure to the food security of China, but also directly pushes the high production cost of animal products. In 2022, 117 million tons of protein feed was consumed by the animal husbandry in China, accounting for nearly 1/3 of the total protein feed consumption in the world. Thus, the application of low-protein diet has been promoted with the strong support of the Ministry of Agriculture and Rural Affairs in China since 2018. With the related techniques, including popularizing low protein diet, developing new protein feed resources, promoting precise nutrition, and feeding technology, even though the compound feed output has increased by more than 84 million tons in 2022 in China, the SBM consumption in feed has reduced 6%. Recently, the geopolitical challenges, regional unrest and climate change tendency have increased the great uncertainty of protein feed supply, which requires us to deeply understand the significance of SBM reduction and substitution in animal feed. As for the research progress, the available energy contents of SBM were determined on growing pigs. Barrows [n = 24; initial body weight (BW) = 36 ± 1.4 kg] were randomly allotted to 4 diets containing SBM with either corn basal or corn-soybean meal basal, and total feces and urine collection method and indirect calorimetry method were used to determine the available energy of SBM. The results showed that the average digestible energy (DE), metabolizable energy (ME), net energy (NE), and retained energy (RE) values in SBM [17.36, 16.52, 10.62, and 5.06 MJ/kg dry matter (DM), respectively] determined using the corn-SBM-basal diet were not different from the those determined using the corn-basal diet. Moreover, the best fitted prediction equations developed based on 22 SBM samples produced from soybeans from China (n = 6), USA (n = 6), Brazil (n = 7) or Argentina (n = 3) were: DE = 38.44 - 0.43 CF - 0.98 GE + 0.11 ADF (R2 = 0.67, P < 0.01) and ME = 2.74 + 0.97 DE - 0.06 CP (R2 = 0.79, P < 0.01). The in vitro digestion kinetics of SBM from different sources showed that the release of amino acids in the 0-10 min time interval was significantly negatively correlated with the NE of SBM (R2 = -0.34).

Practice variation in urine collection methods among pre-toilet trained children with suspected urinary tract infection: a systematic review

BackgroundUrinary tract infections (UTIs) are a common cause of acute illness among infants and young children. There are numerous methods for collecting urine in children who are not toilet trained. This review examined practice variation in the urine collection methods for diagnosing UTI in non-toilet-trained children.MethodsA systematic review was completed by searching MEDLINE (Ovid), Embase (Ovid), CENTRAL (Ovid), PsycInfo (Ovid), CINAHL (EBSCO), and JBI (Ovid) from January 1, 2000 until October 9, 2021 and updated on May 24, 2023. Studies were included if they were conducted in an acute care facility, examined pre-toilet trained children, and compared one urine collection method with another for relevant health care outcomes (such as length of stay in an ED, or re-visits or readmissions to the ED) or provider satisfaction. Two independent reviewers screened the identified articles independently, and those included in the final analysis were assessed for quality and bias using the Newcastle-Ottawa Scale.ResultsOverall, 2535 articles were reviewed and 8 studies with a total of 728 children were included in the final analysis. Seven studies investigated the primary outcome of interest, practice variation in urine collection methods to diagnose a UTI. The seven studies that investigated novel methods of urine collection concluded that there were improved health care outcomes compared to conventional methods. Novel methods include emerging methods that are not captured yet captured in clinical practice guidelines including the use of ultrasound guidance to aid existing techniques. Three studies which investigated healthcare provider satisfaction found preference to novel methods of urine collection.ConclusionsThere is significant practice variation in the urine collection methods within and between countries. Further research is needed to better examine practice variation among clinicians and adherence to national organizations and societies guidelines. PROSPERO registration number CRD42021267754.

Clinician and parent views on urine collection in precontinent children in the UK: a qualitative interview study

ObjectiveTo explore the experiences of healthcare professionals (HCPs) and parents of urine collection methods, to identify barriers to successful sampling and what could improve the process.DesignQualitative research, using individual semistructured...

Review of clinical guidelines for the diagnosis, treatment and prevention of urinary tract infection in children

Urinary tract infection (UTI) is one of the most common bacterial diseases in childhood. The difficulty of diagnosis and timely administration of adequate therapy is associated with differences in the clinical course of the disease in different age groups, localization of the infectious process (upper and lower urinary tract), methods of urine collection and interpretation of the obtained results. The possibility and amount of instrumental diagnostics also varies depending on the region and the specifics of the organization of the healthcare system. The problem of increasing resistance of microorganisms is aggravated by the often-excessive prescription of antimicrobial chemotherapy drugs, which leads to a narrowing of the range of available drugs and the possibility of their use in appropriate age groups. All of the above explains the lack of uniform approaches and the existence of many international and local clinical recommendations on the problem of UTI. This review highlights the features of urine collection in non- and toilet-trained children and also discusses the assumptions and limitations of using screening methods for urinalysis. Indications for urine culture and differences in the interpretation of results depending on the method of obtaining a urine sample are presented, as well as data on modern instrumental diagnostic methods and strategies for their use in practice. A comparative description of current international clinical recommendations for the diagnosis, treatment and prevention of UTIs in children is provided.

Accuracy and precision of dried urine spot method for the detection of Schistosoma mansoni circulating cathodic antigens in resource-limited settings

BackgroundThe World Health Organization recommends the use of Schisto point-of-care circulating cathodic antigens (Schisto POC-CCA) for screening of Schistosoma mansoni as it offers better sensitivity than microscopy. However, there are limitation facing the use of this method including timely availability of the test cassettes. The aim of this study was to determine the reliability of dried urine spot (DUS) method for collection of urine and detection of S. mansoni using Schisto POC-CCA cassettes in a resource-limited settings.MethodsA cross-sectional study was conducted between October and November 2022 among 250 primary school children in Sengerema District, northwestern Tanzania. S. mansoni CCA was detected in filter paper-based DUS, liquid urine using DUS Schisto POC-CCA (index), and direct urine Schisto POC-CCA (comparator) methods respectively. S. mansoni eggs in stool were detected using duplicate Kato-Katz (KK) method. The measures of accuracy were computed and compared between the index and comparator methods. The strength of agreement between inter-raters precisions was tested using Cohen’s kappa (k).ResultsThis study revealed S. mansoni prevalence rates of 28.8%, 54.0% and 50.8% by duplicate KK, direct urine Schisto POC-CCA and DUS Schisto POC-CCA methods respectively. The mean intensity of infection among infected participants was 86.3 eggs per gram of stool (EPG) ranging from 12.0 EPG to 824.0 EPG. The sensitivity of DUS Schisto POC-CCA and direct urine Schisto POC-CCA was 94.44% (95% CI: 89.15–99.74%) and 97.22% (95% CI: 93.43–100.00%) respectively. The DUS Schisto POC-CCA method had slightly higher specificity (66.85%) than direct urine Schisto POC-CCA method (63.48%). The accuracy of the DUS Schisto POC-CCA was found to be slightly high (74.80%, 95% CI: 68.94–79.06%) compared to that of direct urine Schisto POC-CCA (73.20%, 95% CI: 67.25–78.59%). There was good agreement between two laboratory technologists who performed the DUS Schisto POC-CCA method on similar samples (k = 0.80, 95% CI: 0.59–0.95).ConclusionsThe DUS Schisto POC-CCA method had comparable S. mansoni detection accuracy to direct urine Schisto POC-CCA. This suggests that the method could be a potential alternative to direct urine Schisto POC-CCA for screening S. mansoni in resource-limited situations.Graphical

Urinary tract infections in children in the era of growing antimicrobial resistance – recommendations of the Polish Society of Paediatric Nephrology

Introduction and objective: Urinary tract infections can recur in children, and due to their potential long-term consequences, they require appropriate diagnosis and prompt treatment. Although Escherichia coli is the most common aetiology, an increase in infections with drug-resistant strains has been observed. The aim of this study was to develop current diagnostic and treatment recommendations in the era of increasing microbial resistance. Materials and methods: The recommendations are based on updated guidelines developed by the experts of the Polish Society of Paediatric Nephrology and a literature review. Results: Because the symptoms of urinary tract infection are often non-specific, urinalysis and urine culture should be performed in children presenting with fever without an identifiable cause. Correct method of urine collection and interpretation of the results are crucial for therapeutic decisions. Treatment should be continued for 7–14 days for upper and 3–5 days for lower urinary tract infections; the choice of the narrowest-spectrum antimicrobial should be based on bacterial susceptibility. Antibiotic prophylaxis is limited and recommended in children with grade III–V vesicoureteral reflux. Non-pharmacological management should include treatment of bladder and bowel dysfunction. Ultrasound is recommended for all children up to 24 months of age. Indications for voiding cystourethrography are limited to cases with ultrasound abnormalities, recurrent and septic infections. Conclusion: The paper provides up-to-date, practical recommendations for the diagnosis and management of urinary tract infections in children in the era of increasing microbial resistance and restricted indications for invasive radiological investigations.

Comparison of clean catch and bag urine using LC–MS/MS proteomics in infants

BackgroundUrinary proteomics identifies the totality of urinary proteins and can therefore help in getting an early and precise diagnosis of various pathological processes in the kidneys. In infants, non-invasive urine collection is most commonly accomplished with a urine bag or clean catch. The influence of those two collection methods on urinary proteomics was assessed in this study.MethodsThirty-two urine samples were collected in infants using urine bag and clean catch within 24 h. Nine boys and seven girls with a mean age of 4.3 ± 2.9 months were included (5 × post-pyelonephritis, 10 × non-kidney disease, 1 × chronic kidney disease (CKD)). Liquid chromatography-mass spectrometry (LC–MS/MS) was performed in data-independent acquisition (DIA) mode. Protein identification and quantification were achieved using Spectronaut.ResultsA total of 1454 urinary proteins were detected. Albumin and α-1-microglobulin were detected the most. The 18 top-abundant proteins accounted for 50% of total abundance. The number of proteins was slightly, but insignificantly higher in clean catch (957 ± 245) than in bag urine (876 ± 255). The median intensity was 1.2 × higher in the clean catch. Overall, differential detection of proteins was 29% between the collection methods; however, it diminished to 3% in the 96 top-abundant proteins. Pearson’s correlation coefficient was 0.81 ± 0.11, demonstrating a high intraindividual correlation. A principal component analysis and a heat map showed clustering according to diagnoses and patients rather than to the collection method.ConclusionUrinary proteomics shows a high correlation with minor variation in low-abundant proteins between the two urine collection methods. The biological characteristics overrule this variation.Graphical abstractA higher resolution version of the Graphical abstract is available as Supplementary information.

Urine transfer devices may impact urinary particle results: a pre-analytical study.

Well-standardized procedures in the pre-analytical phase of urine diagnostics is of utmost importance to obtain reliable results. We investigated the effect of different urine collection methods and the associated urine transfer tubes on urine test strip and particle results. In total, 146 selected urine samples were subdivided into three different collection containers and subsequently transferred into its accompanying transfer tube (BD, Greiner, Sarstedt vacuum and Sarstedt aspiration). As reference, the original urine sample was directly measured on the analyser. Both chemical test strip analysis (Sysmex UC-3500) and fluorescence flow cytometry particle analysis (Sysmex UF-5000) were performed on all samples. No statistically significant differences in test strip results were found between the studied transfer methods. On the contrary, transfer of urine samples to the secondary tubes affected their particle counts. Clinically significant reductions in counts of renal tubular epithelial cells and hyaline casts were observed using the BD and Greiner transfer tubes and in counts of pathological casts using the BD, Greiner and Sarstedt vacuum tubes. The results of this study indicate that the use of urine transfer tubes may impact counts of fragile urine particles. Clinical laboratories need to be aware about the variation that urine collection methods can induce on urine particle counts.

Urinalysis in dogs and cats, part 1: physical and chemical urinalysis

The urinalysis of dogs and cats is an important part of the diagnostic evaluation of urinary tract diseases as well as for the identification of systemic diseases. A routine urinalysis consists of a physical and chemical examination of the urine as well as an examination of the urine sediment. Various urine collection methods (free-catch, catheterization, cystocentesis) are available. Each method has multiple advantages and disadvantages. The appropriate method must be chosen individually for each patient depending on the emphasis of the examination. The urine should ideally be examined within 30 minutes of collection as it is prone to change due to time and storage. Physical examination of the urine consists of the determination of urine color, clarity, and specific gravity which provides information regarding the concentration of the urine. The latter is determined by refractometry and needs to be interpreted in the context of the hydration status of the patient. Chemical examination of the urine consists of the determination of the pH value and the presence of blood/hemoglobin/myoglobin, protein, glucose, bilirubin, urobilinogen, nitrite, and ketones. The use of commercially available urine dipsticks is common. These must be stored and used according to the manufacturer's instructions and when interpreting the results, veterinary aspects need to be taken into consideration. The physical and chemical examinations of the urine represent rapid and readily performable methods that provide important information for the diagnosis or the exclusion of numerous diseases.

Optimization of a method for collecting infant and toddler urine for non-target analysis using cotton pads and commercially available disposable diapers.

Urine is an abundant and useful medium for measuring biomarkers related to chemical exposures in infants and children. Identification of novel biomarkers is greatly enhanced with non-targeted analysis (NTA), a powerful methodology for broad chemical analysis of environmental and biological specimens. However, collecting urine in non-toilet trained children presents many challenges, and contamination from specimen collection can impact NTA results. We optimized a caregiver-driven method for collecting urine from infants and children using cotton pads and commercially available disposable diapers for NTA and demonstrate its applicability to various children biomonitoring studies. Experiments were first performed to evaluate the effects of processing method (i.e., centrifuge vs. syringe), storage temperature, and diaper brand on recovery of urine absorbed to cotton pads. Caregivers of 11 children (<2 years) used and retained diapers (with cotton pads) to collect their child's urine for 24 h. Specimens were analyzed via a NTA method implementing an exclusion list of ions related to contamination from collection materials. Centrifuging cotton pads through a small-pore membrane, compared to a manual syringe method, and storing diapers at 4 °C, compared to room temperature, resulted in larger volumes of recovered sample. This method was successfully implemented to recover urine from cotton pads collected in the field; between 5-9 diapers were collected per child in 24 h, and the total mean volume of urine recovered was 44.7 (range 26.7-71.1) mL. NTA yielded a list of compounds present in urine and/or stool that may hold promise as biomarkers of chemical exposures from a variety of sources. Infant and children urine is a valuable matrix for studies of the early life exposome, in that numerous biological markers of exposure and outcome can be derived from a single analysis. Depending on the nature of the exposure study, it may be the case that a simple collection method that can be facilitated by caregivers of young children is desirable, especially when time-integrated samples or large volumes of urine are needed. We describe the process for development and results of an optimized method for urine collection and analysis using commercially available diapers and non-target analysis.

The impact of urine collection method on canine urinary microbiota detection: a cross-sectional study

BackgroundThe urinary tract harbors unique microbial communities that play important roles in urogenital health and disease. Dogs naturally suffer from several of the same urological disorders as humans (e.g., urinary tract infections, neoplasia, urolithiasis) and represent a valuable translational model for studying the role of urinary microbiota in various disease states. Urine collection technique represents a critical component of urinary microbiota research study design. However, the impact of collection method on the characterization of the canine urinary microbiota remains unknown. Therefore, the objective of this study was to determine whether urine collection technique alters the microbial populations detected in canine urine samples. Urine was collected from asymptomatic dogs by both cystocentesis and midstream voiding. Microbial DNA was isolated from each sample and submitted for amplicon sequencing of the V4 region of the bacterial 16 S rRNA gene, followed by analyses to compare microbial diversity and composition between urine collection techniques.ResultsSamples collected via midstream voiding exhibited significantly higher sequence read counts (P = .036) and observed richness (P = .0024) than cystocentesis urine. Bray Curtis and Unweighted UniFrac measures of beta diversity showed distinct differences in microbial composition by collection method (P = .0050, R2 = 0.06 and P = .010, R2 = 0.07, respectively). Seven taxa were identified as differentially abundant between groups. Pasteurellaceae, Haemophilus, Friedmanniella, two variants of Streptococcus, and Fusobacterium were over-represented in voided urine, while a greater abundance of Burkholderia-Caballeronia-Paraburkholderia characterized cystocentesis samples. Analyses were performed at five thresholds for minimum sequence depth and using three data normalization strategies to validate results; patterns of alpha and beta diversity remained consistent regardless of minimum read count requirements or normalization method.ConclusionMicrobial composition differs in canine urine samples collected via cystocentesis as compared to those collected via midstream voiding. Future researchers should select a single urine collection method based on the biological question of interest when designing canine urinary microbiota studies. Additionally, the authors suggest caution when interpreting results across studies that did not utilize identical urine collection methods.

MP34-05 VARIATION IN URINARY MICROBIOTA OF ASTRONAUTS ON A SHORT DURATION SPACE FLIGHT

You have accessJournal of UrologyCME1 Apr 2023MP34-05 VARIATION IN URINARY MICROBIOTA OF ASTRONAUTS ON A SHORT DURATION SPACE FLIGHT Paul Chung, Harel Baris, Caleb Phillips, Emanuele Chisari, J. Curtis Nickel, Javad Parvizi, and Ben Boursi Paul ChungPaul Chung More articles by this author , Harel BarisHarel Baris More articles by this author , Caleb PhillipsCaleb Phillips More articles by this author , Emanuele ChisariEmanuele Chisari More articles by this author , J. Curtis NickelJ. Curtis Nickel More articles by this author , Javad ParviziJavad Parvizi More articles by this author , and Ben BoursiBen Boursi More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003268.05AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Space travel exposes crew to substantial stressors, which may potentially alter their microbiome. It is important to understand whether the urinary microbiota is altered to protect the health and safety of travelers and professional astronauts. We hypothesize that the urinary microbiota is altered during a short-duration space flight to the International Space Station (ISS). METHODS: IRB approval was obtained to collect urine samples from four crew members on a short-duration space flight to the ISS. One crew member (Crew#1) provided condom-catheter Orbital urine samples on the ISS (O+2, 4, 6, 8 days). Crew#1 also provided paired mid-stream and condom catheter urine collections for direct comparison of collection method Pre-launch (T-minus 13, 7, 1 days) and 2 days after Return to Earth. Three additional crew provided Pre-launch and Return mid-stream urines samples only. Urine was stored at -80 degrees Celsius and sent for 16s next-generation sequencing (MicroGenDX, Lubbock, TX, USA). RESULTS: Bacterial load did not vary by urine collection method (p=0.42) or time (p=0.93). Species richness and differences in microbiota composition (Bray-Curtis Dissimilarities) did not vary by collection method (p=1.0 and 0.63), but did vary by time (p=0.01, F=26.2, d.f.=3,7, R2=0.96 and p=0.04, F=2.79, d.f.=3,7). Significant differences in microbial composition among Pre-flight, Orbital, and Return groups for Crew#1 were detected (p=0.001, F=3.16, d.f.=2,9, R2=0.47). Post-hoc testing revealed that Preflight and Orbital samples notably differed (p=0.06), Orbital and Return samples significantly differed (p=0.03), and Preflight and Return samples did not significantly differ (p=0.2). The effect of grouping on the product of bacterial load and species richness was tested and found to be significant (p=0.03, F=6.55, d.f.=2,9, R2=0.65). Temporal effects (rather than categorical grouping) on urinary microbiota composition were also evaluated and identified similar results with bacterial load (p=0.02) and the product of load and rich (p=0.03) significant, but species richness not significant (p>0.05) (Figure 1). CONCLUSIONS: Space travel appears to alter the urinary microbiota. Further studies with larger cohorts and all crew members submitting samples in a balanced design are needed to better understand the impact of space travel. Source of Funding: Microgen Dx, Thomas Jefferson University, Sheba Medical Center © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e460 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Paul Chung More articles by this author Harel Baris More articles by this author Caleb Phillips More articles by this author Emanuele Chisari More articles by this author J. Curtis Nickel More articles by this author Javad Parvizi More articles by this author Ben Boursi More articles by this author Expand All Advertisement PDF downloadLoading ...

Urine collection techniques in non-toilet trained children: Switzerland's paediatric office practices in 2022.

Urine collection techniques in non-toilet trained children: Switzerland's paediatric office practices in 2022.

Chemical composition, energy content and apparent total tract digestibility of extruded full fat soybean from different sources fed to non-gestating, gestating and lactating sows.

This experiment was conducted to determine the chemical composition, digestible energy (DE), metabolizable energy (ME) and the apparent total tract (ATTD) of nutrients in six extruded full fat soybean (EFSB) samples from different sources fed to non-gestating, gestating and lactating sows. Forty-two non-gestating sows (Landrace × Yorkshire; parity 3 to 5), 42 gestating sows (Landrace × Yorkshire; parity 3 to 5; day 90 of gestation) and 42 lactating sows (Landrace × Yorkshire; parity 3 to 5; day 6 of lactation) were assigned to seven dietary treatments including a corn-based diet and six diets containing 30.24% EFSB from different sources in a completely randomized design with six replicate sows per dietary treatment. Total fecal and urine collection method was used during non-gestation and gestation, and the index method was used during lactation (0.3% chromic oxide). Differences in the chemical composition of the six EFSB samples from different sources were mainly reflected in ether extract, ash, crude fiber, neutral detergent fiber (NDF), acid detergent fiber, total dietary fiber, insoluble dietary fiber, soluble dietary fiber, and vitamin and micro minerals content, with a coefficient of variation ≥8.37%. The potassium hydroxide solubility of the six EFSB samples varied from 66.60% to 85.55%. There were no differences in ATTD of NDF between different EFSB samples. Additionally, there were no differences in ME values and ME/DE ratios between different physiological stages, but ATTD of NDF were higher for non-gestating and gestating sows than lactating sows (P < 0.01). In conclusion, EFSB can be used as a high-quality energy ingredient with high DE and ME values when fed to sows. DE values of EFSB in non-gestating, gestating, and lactating sows were 20.50, 20.70, and 20.02 MJ/kg, respectively, while ME values of EFSB was 19.76 MJ/kg in both non-gestating and gestating sows.

Urinary Predictors of Bacteremia in Febrile Infants with Urinary Tract Infection

<strong>Background:</strong> Predicting the risk of bacteremia in febrile infants with urinary tract infection (UTI) remains a diagnostic challenge. Prior studies have focused on the utility of blood biomarkers in predicting the risk of bacteremia in febrile infants, the role of urinary components in predicting bacteremia remain unexplored. This study aims to evaluate the utility of components of urinalysis (UA) in predicting bacteremia in febrile infants &lt; 3 and 3–24 months with UTI. <strong>Methods:</strong> We reviewed records of 2000 febrile children 0–24 months with UTI, seen over a 6-year-period in the pediatric emergency department. We defined UTI as positive urine culture, based on the 2016 AAP thresholds. Descriptive, chi-square, and logistic regression analyses were performed as appropriate, including test probabilities (sensitivity [Sn], specificity [Sp], and negative predictive value [NPV]) to evaluate the bacteremia predictive probabilities of components of UA using SAS-9.4®. <strong>Results:</strong> Of 813 febrile infants with UTI who had blood cultures, 82 (10.1%) had bacteremia. There was no statistically significant difference between compared groups in terms of sex, ethnicity, or urine collection method. Infants &lt; 3 months had significantly higher prevalence of bacteremia compared to infants 3–24 months (14.3% vs. 4.3%, p &lt; 0.0001). Urinary predictors of bacteremia in infants &lt; 3 months include bacteriuria-(pOR:2.3, p = 0.010, Sn-80.0%, NPV-91.8%, Sp-36.8%), pyuria-(pOR-6.7, p = 0.031, Sn-98.4%, NPV-97.4%, Sp-10.0%), and growth of E. coli in urine culture- (pOR-9.8, p = 0.0006, Sn-98.5%, NPV-98.1%, Sp-12.9%). There were no UA predictors of bacteremia among infants 3–24 months. <strong>Conclusion:</strong> Components of UA may be useful in predicting bacteremia in febrile infants &lt; 3 months with UTI. Among infants &lt; 3 months with UTI, potential predictors of bacteremia were bacteriuria, pyuria, and growth of E. coli on urine culture. Urinary components did not predict bacteremia in infants 3–24-months.