752 results match your criteria: "Pediatrics Urinary Tract Infections and Pyelonephritis"

Article Synopsis
  • * Researchers created guidelines and a standardized order set for primary care providers to improve the diagnosis and management of urinary tract infections (UTIs). This aimed to support appropriate antibiotic prescriptions.
  • * Between March 2018 and March 2020, the use of the recommended antibiotic cephalexin rose significantly while the less effective trimethoprim-sulfamethoxazole fell sharply, showing that the new approach effectively improved prescribing practices.
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Partial cystectomy procedures for urinary bladder-related dysfunction involve long recovery periods, during which urodynamic studies (UDS) intermittently assess lower urinary tract function. However, UDS are not patient-friendly, they exhibit user-to-user variability, and they amount to snapshots in time, limiting the ability to collect continuous, longitudinal data. These procedures also pose the risk of catheter-associated urinary tract infections, which can progress to ascending pyelonephritis due to prolonged lower tract manipulation in high-risk patients.

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Urinary tract infections (UTI) affect between 3% to 7.5% of the febrile pediatric population each year, being one of the most common bacterial infections in pediatrics. Nevertheless, there is no consensus in the medical literature regarding the duration of per oral (p.

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 Group B (GBS) colonization of the lower urinary tract in pregnancy is associated with severe infections such as chorioamnionitis, endometritis, and pyelonephritis. The objective of this study was to compare rates of progression to pyelonephritis between GBS and lower urinary tract infections (LUTIs), as well as compare infectious and obstetric morbidity secondary to these pathogens.  Retrospective cohort of pregnant women with LUTIs (asymptomatic bacteria or acute cystitis [AC]) from a single health system between July 2013 and May 2019.

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Article Synopsis
  • Duplex renal collecting system (DK) in children is linked to issues like uropathy and can lead to various management strategies, including surgeries or watchful waiting.
  • A retrospective study examined outcomes of uretero-ureteral anastomosis (UUA) in 33 children over 20 years, focusing on complications, urinary tract infections, and follow-ups.
  • The study found a 12.1% complication rate with different surgical approaches (inguinal, laparoscopic, and combined) and noted that most cases involved the left kidney, with prenatal diagnoses being common.
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Urinary tract infections (UTIs) in men are uncommon yet carry an increased risk for severe pyelonephritis and other complications. In models of UTI, C3H/HeN mice develop high-titer pyelonephritis (most with renal abscesses) in a testosterone-dependent manner, but the mechanisms underlying this phenotype are unknown. Here, using female mouse models, we show that androgen exposure impairs neutrophil maturation in the upper and lower urinary tract, compounded by a reduction of neutrophil function within the infected kidney, enabling persistent high-titer infection and promoting abscess formation.

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Aim: Febrile urinary tract infection is a common bacterial infection in childhood. The kidney damage after acute pyelonephritis (APN) could be related to the stimulation of the proinflammatory response. We aimed to investigate the role of inflammatory cytokines and the effect of dexamethasone after a first episode of APN.

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We present updated, evidence-based clinical practice guidelines from the Indian Society of Pediatric Nephrology (ISPN) for the management of urinary tract infection (UTI) and primary vesicoureteric reflux (VUR) in children. These guidelines conform to international standards; Institute of Medicine and AGREE checklists were used to ensure transparency, rigor, and thoroughness in the guideline development. In view of the robust methodology, these guidelines are applicable globally for the management of UTI and VUR.

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Ceftolozane/tazobactam is approved for the treatment of patients from birth to <18 y old with complicated urinary tract infections (cUTI). This post hoc analysis evaluated the safety, efficacy, and pharmacokinetics (PK) of ceftolozane/tazobactam compared with meropenem in neonates and young infants. NCT03230838 was a phase 2, randomized, active comparator-controlled, double-blind study of patients from birth to <18 y of age with cUTI, including pyelonephritis, given ceftolozane/tazobactam or meropenem in a 3:1 ratio.

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Article Synopsis
  • - Vesicoureteral reflux (VUR) is a condition in 1-2% of children that can lead to serious kidney issues, and the treatment focuses on preventing urinary tract infections and long-term complications, necessitating personalized management strategies.
  • - A review of literature on Positional Instillation of Contrast Cystography (PIC) reveals it detects VUR in 73% of cases with negative voiding cystographies, identifying significant rates of both low-grade (81%) and high-grade (19%) VUR, along with a 41% incidence of occult contralateral VUR.
  • - Despite positive results in diagnosing VUR with PIC, caution is advised due to the need for more thorough studies to validate these findings
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Objective: The aim: To obtain the first national estimates of the current prevalence rate of urinary tract infections (UTIs) in pregnant women and antimicrobial resistance of causing pathogens in Ukraine.

Patients And Methods: Materials and methods: Prospective multicentre cohort study was conducted from January 2020 to December 2022. The study population consisted of 36,876 pregnant women from 17 regions of Ukraine.

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Immune defenses in the urinary tract.

Trends Immunol

September 2023

Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA. Electronic address:

Recent advances in preclinical modeling of urinary tract infections (UTIs) have enabled the identification of key facets of the host response that influence pathogen clearance and tissue damage. Here, we review new insights into the functions of neutrophils, macrophages, and antimicrobial peptides in innate control of uropathogens and in mammalian infection-related tissue injury and repair. We also discuss novel functions for renal epithelial cells in innate antimicrobial defense.

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Article Synopsis
  • Urinary tract infections (UTIs) in children are primarily caused by uropathogenic Escherichia coli (UPEC), yet there is limited understanding of their genetic makeup and antibiotic resistance.
  • Researchers analyzed whole-genome sequences from 96 UPEC isolates, focusing on those from children with pyelonephritis and multidrug-resistant ST131 strains.
  • The study revealed similar UPEC population structures in children and adults, identified genetic markers linked to antibiotic resistance, and highlighted unexpected genetic associations within different UPEC subclades.
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Acute focal bacterial nephritis and prolonged fever.

Paediatr Int Child Health

November 2023

Departments of Pediatric Rheumatology and Nephrology, Pamukkale University School of Medicine, Kınıklı Yerleşkesi, Turkey.

Article Synopsis
  • Acute focal bacterial nephritis (AFBN) is a serious upper urinary tract infection that requires prompt diagnosis and longer antibiotic treatment to prevent complications.
  • A 10-year-old boy presented with fever and flank pain, and imaging showed significant kidney enlargement and lesions, leading to an MRI to assess the situation better.
  • Negative urine cultures in febrile children can lead to misdiagnosis; therefore, ultrasound and advanced imaging like CT or MRI are crucial for identifying AFBN.
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Comparison of clean catch and bag urine using LC-MS/MS proteomics in infants.

Pediatr Nephrol

January 2024

Division of Pediatric Nephrology, Department of Pediatrics, Dr. V. Hauner Children's Hospital, Ludwig-Maximilians University, Lindwurmstraße 4, 80337, Munich, Germany.

Article Synopsis
  • * A total of 1454 urinary proteins were identified, with clean catch samples showing a slightly higher number and intensity of proteins compared to urine bags, but the difference was not statistically significant.
  • * Results revealed a 29% difference in protein detection between collection methods, but a strong correlation (0.81) indicates that biological factors are more important than the collection method itself in determining urinary proteomics.
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Article Synopsis
  • The study focuses on urinary tract infections (UTIs) in children and investigates the potential use of soluble Toll-like receptors (sTLR4, sTLR5) and interleukin 8 (IL-8) as biomarkers for diagnosing UTIs.
  • It involved 520 children, including those with UTIs, non-UTI infections, and healthy controls, measuring urine and serum levels of the biomarkers before and after treatment.
  • Results show that urine sTLR4 levels are higher in UTI patients, with a cut-off level identified to predict UTIs, especially higher in cases of pyelonephritis compared to cystitis, and decreasing post-treatment.
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Article Synopsis
  • Urinary tract infections (UTIs) are a common bacterial infection in children, with an incidence rate of 3% annually, making them a significant concern for healthcare systems worldwide.
  • This study reviews guidelines from 2000 to 2022 regarding the diagnosis and management of UTIs in children, highlighting the importance of proper urine collection methods and diagnostic criteria.
  • Key management practices include timely medical evaluations for recurrent infections, tailored antibiotic therapy based on age and local resistance patterns, and the use of specific imaging techniques for severe cases.
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Children with recurrent fevers in a short period of time need to be worked up to identify the underlying cause. Fevers in children and infants can be from many different sources. Vesicoureteral reflux (VUR) is an anatomical and physiological anomaly in children that can lead to retrograde urine flow from the bladder back into the distal ureters.

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Background: The terms "renal regenerating nodule" and "nodular compensatory hypertrophy" are used in the literature to describe functioning pseudo-tumors (FPT) in the setting of an extensively scarred kidney. FPTs are usually discovered incidentally during routine renal imaging. Differentiating these FPTs from renal neoplasms is critical but can be challenging in the setting of chronic kidney disease (CKD) given the limitations related to using contrast-based imaging.

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Background: Urinary tract infections (UTIs) due to MDR organisms are increasingly common. The lack of paediatric data on efficacious antibiotics makes UTI treatment particularly challenging. Data on the efficacy of fosfomycin use for UTI in children are variable.

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Kidney medullary sodium chloride concentrations induce neutrophil and monocyte extracellular DNA traps that defend against pyelonephritis in vivo.

Kidney Int

August 2023

Nephrology Section, First Medical Clinic, University Clinic and Rheinische Friedrich-Wilhelms Universität Bonn, Bonn, Germany; Department of Internal Medicine, Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany. Electronic address:

Urinary tract infections are common. Here, we delineate a role of extracellular DNA trap (ET) formation in kidney antibacterial defense and determine mechanisms of their formation in the hyperosmotic environment of the kidney medulla. ET of granulocytic and monocytic origin were present in the kidneys of patients with pyelonephritis along with systemically elevated citrullinated histone levels.

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Background: Urinary tract infections (UTI) are common types of bacterial infection in children. UTI treatment is aimed to prevent complications including hypertension, proteinuria, and progression to chronic kidney disease. Activated neutrophils release chromatin-based structures associated with antimicrobial proteins called neutrophil extracellular traps (NETs).

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Purpose: This study aimed to assess the feasibility of contrast-enhanced ultrasound (CEUS) for the diagnosis of acute pyelonephritis (APN) in pediatric patients with febrile urinary tract infection (UTI).

Materials And Methods: Between March 2019 and January 2021, study participants with suspected UTI were assessed for APN using ultrasound. Parenchymal echogenicity changes, renal pelvis dilatation, and the presence of a focal suspected lesion were assessed using conventional grayscale ultrasound.

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Background: Acute pyelonephritis (APN) in pediatric patients may lead to kidney scarring and is one of the main causes of permanent kidney damage. The incidence of kidney scarring after one febrile urinary tract infection (UTI) is reported to range from 2.8 to 15%, with the percentage rising to 28.

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