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BMC Infectious Diseases Feb 2023Trueperella bernardiae is a coryneform, gram-positive bacterium that is a commensal of the skin and upper respiratory tract. It is treated as a contaminant and rarely... (Review)
Review
BACKGROUND
Trueperella bernardiae is a coryneform, gram-positive bacterium that is a commensal of the skin and upper respiratory tract. It is treated as a contaminant and rarely causes infections. Blood, urine, and abscesses have been previously reported as the most common sites of infection. Infections caused by T. bernardiae are rarely reported in bedridden very old patients with reduced activities of daily living (ADL). In this report, we describe a case of sepsis due to acute pyelonephritis caused by T. bernardiae in a very old patient with impaired ADL.
CASE PRESENTATION
A 94-year-old woman had a home visit from her local physician. She was bedridden and used diapers. On the day of admission, she presented with fever and dyspnea and was admitted with a diagnosis of sepsis associated with acute pyelonephritis. T. bernardiae was detected in blood and urine cultures; furthermore, multiple bacteria were detected in a urine culture. She was treated with ampicillin/sulbactam 3 g every 12 h on the day of admission. The fever was controlled, and inhaled oxygen 1 L/min via a nasal cannula was administered for dyspnea until hospitalization day 2. On hospitalization day 2, her fever resolved to 36 °C. Antimicrobials were de-escalated and changed to cephazolin and then to cephalexin on hospitalization days 9 and 16, respectively, and were continued until day 22. On hospitalization day 28, the urinary tract infection flared up; however, her fever resolved by hospitalization day 38 after the re-administration of antimicrobial agents. She was discharged on hospitalization day 60.
CONCLUSIONS
We encountered a rare case of sepsis following acute pyelonephritis caused by T. bernardiae infection. When bedridden, diaper-using, very old patients present with urinary tract infections caused by multiple bacteria, the presence of rare opportunistic organisms, such as T. bernardiae, should be considered.
Topics: Humans; Female; Aged, 80 and over; Anti-Bacterial Agents; Activities of Daily Living; Pyelonephritis; Urinary Tract Infections; Sepsis; Fever
PubMed: 36829134
DOI: 10.1186/s12879-023-08080-8 -
Anales de Pediatria Mar 2023To analyse the trends in hospital admissions related to urinary tract infection among children aged 0-14 years in Spain in the 2000-2015 period. (Observational Study)
Observational Study
OBJECTIVE
To analyse the trends in hospital admissions related to urinary tract infection among children aged 0-14 years in Spain in the 2000-2015 period.
METHODS
We conducted a retrospective observational study using the minimum basic hospital discharge dataset system of Spain, which applies the International Classification of Diseases, version 9 (ICD-9) coding system. We included every hospitalisation due to cystitis, pyelonephritis and unspecified UTI among children aged less than 15 years. We collected data on patient sex and age, type of discharge, main diagnosis, comorbidities, length of stay and overall cost. We calculated crude hospitalization rates per 1000 inhabitants aged less than 15 years and performed a joinpoint regression analysis to identify temporal trends.
RESULTS
In the 2000-2015 period, there were 124 696 hospitalizations in children under 15 years. Of these patients, 72.97% were aged 0-1 year and 60.12% had a diagnosis of unspecified UTI, 39.27% of pyelonephritis, and 0.52% of cystitis. The crude rate of hospitalization due to UTI ranged from 1.24 in year 2000 to 0.98 in 2015. The rate of hospitalization was higher in female versus male patients. The joinpoint analysis found a decreasing trend in the rate of hospitalization due to UTI, with an average annual percent change (AAPC) of -1.5% (95% confidence interval [CI], -2.4 a -0.6). The largest decreases occurred in female patients (AAPC, -1.8; 95% CI, -2.5 a -1.0) and children aged 7-10 years (AAPC - 5.9; 95% CI, -6.7 a -5.2).
CONCLUSIONS
The rate of hospitalization related to UTI in Spain in patients aged up to 14 years decreased during the 2000-2015 period. The highest hospitalization rates occurred in female patients and in the 0-to-1 year age group.
Topics: Humans; Male; Child; Female; Infant, Newborn; Infant; Child, Preschool; Adolescent; Spain; Hospitalization; Urinary Tract Infections; Pyelonephritis; Cystitis
PubMed: 36804332
DOI: 10.1016/j.anpede.2023.01.009 -
Internal Medicine (Tokyo, Japan) Oct 2023Emphysematous pyelonephritis (EPN) is a severe urinary tract infection common in patients with diabetes. Nephrectomy is recommended when the Huang classification is... (Review)
Review
Emphysematous pyelonephritis (EPN) is a severe urinary tract infection common in patients with diabetes. Nephrectomy is recommended when the Huang classification is ≥3B. We herein report a case in which nephrectomy was avoided using antimicrobial agents and percutaneous drainage (PCD). A 59-year-old man was diagnosed with EPN (Huang classification 3B). The causative bacteria were Escherichia coli. Despite high-risk factors, EPN was cured with kidney preservation and PCD because the emphysema and abscess were not extensive. Thus, PCD should be considered in patients with Huang Class 3B EPN and high-risk factors if emphysema and abscess are not extensive.
Topics: Male; Humans; Middle Aged; Abscess; Pyelonephritis; Diabetes Complications; Escherichia coli; Emphysema; Drainage
PubMed: 36792198
DOI: 10.2169/internalmedicine.0694-22 -
Iranian Journal of Kidney Diseases Jan 2023Renal scarring is a serious complications of urinary tract infection and vesicoureteral reflux (VUR). The dimercaptosuccinic acid (DMSA) scan is the gold standard method...
INTRODUCTION
Renal scarring is a serious complications of urinary tract infection and vesicoureteral reflux (VUR). The dimercaptosuccinic acid (DMSA) scan is the gold standard method for diagnosing renal scars but is an expensive procedure that risks ionizing materials and is not available to everyone. Neutrophil gelatinase-associated lipocalin (NGAL) increases following inflammation, infection, and acute kidney injury in the urine. The aim of this study was to evaluate the urinary level of NGAL and determine its diagnostic value in renal scarring.
METHODS
Patients aged 3 to 60 months with pyelonephritis were included in this study. Voiding cystourethrography (VCUG) was performed in the presence of hydronephrosis on ultrasonography. Children with VUR underwent DMSA scans six months after successful treatment of pyelonephritis., Patients were divided into two groups based on the result of DMSA scan: those with and those without renal scars. Levels of urinary NGAL were measured in both groups.
RESULTS
Ninety-two children with VUR (grades 2 to 5) were studied, of whom 40 had renal scars and 52 did not. The urinary level of NGAL at the cutoff point of 284 ng/dL had 70% sensitivity and 100% specificity for the detection of renal scars and was higher in patients with renal scars. (P < .05).
CONCLUSION
The urinary level of NGAL is considerably higher in children with renal scarring. It is not a good test for screening and early diagnosis due to its low sensitivity, although it can identify renal scars caused by VUR with high specificity. DOI: 10.52547/ijkd.6951.
Topics: Humans; Child; Infant; Vesico-Ureteral Reflux; Cicatrix; Lipocalin-2; Lipocalins; Technetium Tc 99m Dimercaptosuccinic Acid; Pyelonephritis; Urinary Tract Infections
PubMed: 36739486
DOI: No ID Found -
Journal of Nephrology Jul 2023Acute pyelonephritis is a common infection in children that may cause renal scarring. The aim of this systematic review and meta-analysis was to analyse the use of... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Acute pyelonephritis is a common infection in children that may cause renal scarring. The aim of this systematic review and meta-analysis was to analyse the use of corticosteroid treatment to prevent renal scarring.
METHODS
We searched the PubMED, SCOPUS, Cochrane CENTRAL and Web of Science databases in June 2022 for (corticosteroid* or dexamethasone or prednisolone* or prednisone* or hydrocortisone*) AND pyelonephritis. Randomised controlled trials focusing on children were included. The intervention was corticosteroid treatment with antibiotics compared to antibiotics with or without a placebo. The main outcome was the presence of renal scars on dimercaptosuccinic acid scanning at follow-up. The evidence quality was assessed using the GRADE methodology and risk of bias 2.0 tool. We calculated the risk ratio (RR), absolute risk difference (RD) with 95% confidence intervals (CI) and the number needed to treat (NNT). We applied a fixed effects model due to low heterogeneity.
RESULTS
We screened 872 abstracts and included five full texts. Renal scarring at follow-up was found in 31/220 (14.1%) patients in the corticosteroid groups and 76/278 (27.3%) in the control groups (RR 0.65, CI 0.44-0.96, RD - 13.2%, NNT 8). The evidence quality was moderate. Two studies reported adverse events with no differences between the groups. The risk of bias analysis showed some concerns in four studies.
CONCLUSION
We found moderate quality evidence that adjuvant corticosteroid treatment could prevent renal scarring. Adverse events were insufficiently reported, and more research on their effectiveness and harm is therefore needed before using corticosteroids in clinical settings.
Topics: Child; Humans; Cicatrix; Adrenal Cortex Hormones; Prednisolone; Anti-Bacterial Agents; Pyelonephritis; Randomized Controlled Trials as Topic
PubMed: 36692666
DOI: 10.1007/s40620-022-01552-1 -
The Pediatric Infectious Disease Journal Apr 2023Ceftolozane/tazobactam, a cephalosporin-β-lactamase inhibitor combination, active against multidrug-resistant Gram-negative pathogens, is approved for treatment of... (Randomized Controlled Trial)
Randomized Controlled Trial
Safety and Efficacy of Ceftolozane/Tazobactam Versus Meropenem in Neonates and Children With Complicated Urinary Tract Infection, Including Pyelonephritis: A Phase 2, Randomized Clinical Trial.
BACKGROUND
Ceftolozane/tazobactam, a cephalosporin-β-lactamase inhibitor combination, active against multidrug-resistant Gram-negative pathogens, is approved for treatment of adults with complicated urinary tract infections (cUTI). Safety and efficacy of ceftolozane/tazobactam in pediatric participants with cUTI, including pyelonephritis, were assessed.
METHODS
This phase 2 study (NCT03230838) compared ceftolozane/tazobactam with meropenem for treatment of cUTI in participants from birth to <18 years of age. The primary objective was safety and tolerability. Key secondary end points included clinical cure and per-participant microbiologic response rates at end of treatment (EOT) and test of cure (TOC) visits.
RESULTS
The microbiologic modified intent-to-treat (mMITT) population included 95 participants (ceftolozane/tazobactam, n = 71; meropenem, n = 24). The most common diagnosis and pathogen were pyelonephritis (ceftolozane/tazobactam, 84.5%; meropenem, 79.2%) and Escherichia coli (ceftolozane/tazobactam, 74.6%; meropenem, 87.5%); 5.7% (ceftolozane/tazobactam) and 4.8% (meropenem) of E. coli isolates were extended-spectrum β-lactamase-producers. Rates of adverse events were similar between treatment groups (any: ceftolozane/tazobactam, 59.0% vs. meropenem, 60.6%; drug-related: ceftolozane/tazobactam, 14.0% vs. meropenem, 15.2%; serious: ceftolozane/tazobactam, 3.0% vs. meropenem, 6.1%). Rates of clinical cure for ceftolozane/tazobactam and meropenem at EOT were 94.4% and 100% and at TOC were 88.7% and 95.8%, respectively. Rates of microbiologic eradication for ceftolozane/tazobactam and meropenem at EOT were 93.0% and 95.8%, and at TOC were 84.5% and 87.5%, respectively.
CONCLUSIONS
Ceftolozane/tazobactam had a favorable safety profile in pediatric participants with cUTI; rates of clinical cure and microbiologic eradication were high and similar to meropenem. Ceftolozane/tazobactam is a safe and effective new treatment option for children with cUTI, especially due to antibacterial-resistant Gram-negative pathogens.
Topics: Adult; Infant, Newborn; Humans; Child; Meropenem; Escherichia coli; Penicillanic Acid; Cephalosporins; Tazobactam; Anti-Bacterial Agents; Urinary Tract Infections; Pyelonephritis
PubMed: 36689671
DOI: 10.1097/INF.0000000000003832 -
The Journal of Maternal-fetal &... Dec 2023Acute pyelonephritis, a risk factor for maternal sepsis, adult respiratory distress syndrome, and preterm labor, is a frequent cause of hospitalization. This condition...
BACKGROUND
Acute pyelonephritis, a risk factor for maternal sepsis, adult respiratory distress syndrome, and preterm labor, is a frequent cause of hospitalization. This condition is characterized by excessive intravascular inflammation and endothelial cell activation and dysfunction. Syndecan-1, a major component of the glycocalyx, is a gel-like layer that covers the luminal surface of healthy endothelial cells, preserving and mediating many endothelial functions. During pregnancy, there is an additional potential source of syndecan-1, the "syncytiotrophoblast glycocalyx," which lines the intervillous space. Insults that damage the glycocalyx lead to a shedding of syndecan-1 into the circulation. Hence, syndecan-1 has been proposed as a marker of endothelial injury in conditions such as sepsis, trauma, cardiovascular disease, and diabetes mellitus.
OBJECTIVE
The objective of this study was to determine whether the plasma syndecan-1 concentration changes in women with acute pyelonephritis in the presence or absence of bacteremia.
STUDY DESIGN
This cross-sectional study included three groups: (1) non-pregnant women ( = 25); (2) women with an uncomplicated pregnancy from whom samples were collected preterm ( = 61) or at term ( = 69); and (3) pregnant women diagnosed with acute pyelonephritis from whom samples were collected at the time of diagnosis during the second and third trimesters ( = 33). The diagnosis of acute pyelonephritis was based on clinical findings and a positive urine culture for bacteria. Blood culture results were available in 85% (28/33) of women with acute pyelonephritis. Plasma concentrations of syndecan-1 were determined by a validated immunoassay.
RESULTS
1) Women with an uncomplicated pregnancy had a higher plasma concentration of syndecan-1 than non-pregnant women. The geometric mean (95% confidence interval [CI]) of syndecan-1 concentration was 51.0 (12.1-216.1) ng/mL in non-pregnant controls; 1280 (365-4487) ng/mL in normal preterm gestations; and 1786 (546-5834) ng/mL in normal term gestations (adjusted < .005 for all three between group comparisons); 2) plasma syndecan-1 concentrations increased with gestational age among women with a normal pregnancy ( < .001, = 0.27); (3) syndecan-1 multiple of the mean (MoM) values in pregnant patients with acute pyelonephritis were higher than those in normal pregnant women based on second- and third-trimester samples ( = .048, 1.26-fold change). The increase was driven primarily by cases with a positive blood culture ( = .009, 1.74-fold change); (4) when data from third-trimester samples were compared, overall differences in syndecan-1 MoM values between cases and controls were slightly larger ( = .03, 1.36- fold change), which were especially contributed to by cases with a positive blood culture ( = .023, fold change 1.79-fold change).
CONCLUSIONS
Plasma syndecan-1 concentration is higher in pregnant women and increases as a function of gestational age. Patients with acute pyelonephritis have a higher plasma concentration of syndecan-1, and this is particularly the case in the presence of bacteremia.
Topics: Adult; Female; Humans; Pregnancy; Bacteremia; Case-Control Studies; Cross-Sectional Studies; Endothelial Cells; Glycocalyx; Pyelonephritis; Syndecan-1
PubMed: 36642424
DOI: 10.1080/14767058.2022.2155041 -
Journal of Infection and Chemotherapy :... May 2023Pyelonephritis is a common infection at any age. Urine neutrophil gelatinase-associated lipocalin (NGAL), a novel biomarker of acute renal failure, is related to...
BACKGROUND
Pyelonephritis is a common infection at any age. Urine neutrophil gelatinase-associated lipocalin (NGAL), a novel biomarker of acute renal failure, is related to pyelonephritis in pediatric patients, although the significance of this urine biomarker in adult patients are not clear. We investigated the relationship between urine NGAL of pyelonephritis and non-pyelonephritis.
PATIENTS AND METHODS
We prospectively enrolled adult patients who were hospitalized due to pyelonephritis or non-pyelonephritis. Pyelonephritis was diagnosed in patients with fever and bacteriuria, with no any other infection focuses. Non-pyelonephritis was diagnosed in patients who had fever and another infection focus without bacteriuria. Urine samples were collected on days 0, 3 and 7. Urine NGAL levels were measured by ELISA.
RESULTS
There were 35 patients in the pyelonephritis group and 19 patients in the non-pyelonephritis group. Urine NGAL level were significantly higher in the pyelonephritis group than the non-pyelonephritis group on day 0 (median 302 ng/mL vs 25 ng/mL, p = 0.006). The area under the receiver operating characteristic curve of NGAL was 0.78 (p = 0.006). Urine NGAL level had a specificity of 66.7% and sensitivity of 87.0% at the cut-off level of 250 ng/mL for diagnosing pyelonephritis.
CONCLUSIONS
Urine NGAL level at the diagnosis of infection are elevated in adult patients with pyelonephritis, but not in those with non-pyelonephritis. Urine NGAL might be a supportive biomarker for the diagnosis of pyelonephritis.
Topics: Adult; Humans; Acute Kidney Injury; Bacteriuria; Biomarkers; Lipocalin-2; Pyelonephritis; ROC Curve
PubMed: 36621764
DOI: 10.1016/j.jiac.2023.01.001 -
The American Journal of the Medical... Mar 2023Xanthogranulomatous pyelonephritis (XGP) is a rare variant of chronic pyelonephritis, occurring in the setting of obstructive uropathy and recurrent urinary tract... (Review)
Review
Xanthogranulomatous pyelonephritis (XGP) is a rare variant of chronic pyelonephritis, occurring in the setting of obstructive uropathy and recurrent urinary tract infections (UTIs). It is difficult to diagnose as it can be asymptomatic until late-stage disease. Localized symptoms such as flank pain and dysuria may be attributed to nephrolithiasis or UTIs without prompting need for further workup. Extrarenal manifestations, most notably fistula formation, may present distal to the kidney and not be readily attributed to a renal pathology. The only known definitive therapy is nephrectomy. A delay in diagnosis can lead to fulminant complications or a more technically difficult nephrectomy. We present three cases of XGP, which serve to highlight the possibility of earlier diagnosis and resultant management options, including the potential for nephron-saving strategies. Early clinical and radiologic suspicion through awareness of risk factors may play an important role in preventing disease progression, avoiding late-stage complications, and improving treatment outcomes.
Topics: Humans; Pyelonephritis, Xanthogranulomatous; Kidney; Nephrectomy; Treatment Outcome; Urinary Tract Infections
PubMed: 36473546
DOI: 10.1016/j.amjms.2022.11.004 -
Hinyokika Kiyo. Acta Urologica Japonica Nov 2022Emphysematous pyelonephritis (EPN) is a severe necrotic urinary tract infection accompanied by retention of gas in the kidney and areas around it. Formerly, emergency...
Emphysematous pyelonephritis (EPN) is a severe necrotic urinary tract infection accompanied by retention of gas in the kidney and areas around it. Formerly, emergency nephrectomy was the primary treatment, but the trend is shifting to treatment with maximum conservation of the kidney. In this report, two cases of EPN successfully treated by transurethral drainage are presented. The first case was in a 63-year-old woman with a history of poorly controlled diabetes. She arrived at the hospital by ambulance with primary symptoms of vomiting and trembling of the hands, and computed tomography (CT) revealed gas in the right renal calix. The second case was in a 61-year-old woman who arrived by ambulance with difficulty of body movement as the primary symptom, and CT revealed a calculus in the right ureter accompanied by right hydronephrosis and retention of gas in the right renal pelvis and right upper ureter. Both patients were diagnosed with EPN and treated by transurethral drainage rather than percutaneous drainage or nephrectomy because of their poor general condition. The treatment was successful. Along with percutaneous drainage, transurethral drainage is considered to be an option of surgical treatment for EPN.
Topics: Female; Humans; Middle Aged; Pyelonephritis; Kidney; Nephrectomy; Ureter; Catheterization
PubMed: 36458398
DOI: 10.14989/ActaUrolJap_68_11_349