Follow-Up Blood Cultures in Young Infants With Bacteremic Urinary Tract Infections

Hospital Pediatrics ◽

10.1542/hpeds.2021-006012 ◽

2021 ◽

Author(s):

Erika Franz-O’Neal ◽

Jared Olson ◽

Emily A. Thorell ◽

Frank A. Cipriano

Keyword(s):

Urinary Tract ◽

Central Line ◽

Blood Cultures ◽

Young Infants ◽

Number Of Patients ◽

Persistent Bacteremia ◽

Intermountain Healthcare ◽

Tract Infections ◽

Central Line Infection

BACKGROUND AND OBJECTIVES Researchers in previous studies suggest that the clinical yield of follow-up blood cultures (FUBCs) is low in infants with bacteremic urinary tract infection (UTI) because persistent bacteremia is rare; however, no researchers have analyzed the practice of routinely obtaining FUBCs. In our study, we evaluate outcomes in infants with FUBCs, examine opportunities for improvement of blood culture practices, and add important information to inform both clinical practice as well as further study. DESIGN This retrospective cohort study included infants <90 days of age with bacteremia and UTI with the same pathogen at 22 hospitals that make up Intermountain Healthcare between 2002 to 2020. Infants with culture proven meningitis, osteomyelitis, central line infection, and infections occurring during NICU hospitalization were excluded. RESULTS Total number of patients with bacteremic UTI was 174, 153 (88%) patients had at least 1 FUBC, 14 of 153 (9%) had a positive FUBC with same organism, and 4 of 153 (3%) were contaminants. The length of stay was longer for patients with positive FUBCs. Patients with Escherichia coli are more likely to have a negative FUBC. Readmissions within 30 days were similar among infants with positive FUBCs, negative FUBCs, and no FUBCs. CONCLUSIONS FUBCs in infants with bacteremic UTI should not be routinely performed, especially for E coli, and it is unclear whether FUBCs improve outcomes.

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Urinary Tract Infections

PEDIATRICS ◽

10.1542/peds.87.5.745b ◽

1991 ◽

Vol 87 (5) ◽

pp. 745-746

Author(s):

JOHN D. ROSCELLI

Keyword(s):

Urinary Tract ◽

Urinary Tract Infections ◽

Follow-up blood cultures add little value in the management of bacteremic urinary tract infections

European Journal of Clinical Microbiology & Infectious Diseases ◽

10.1007/s10096-019-03484-4 ◽

2019 ◽

Vol 38 (4) ◽

pp. 695-702 ◽

Cited By ~ 8

Author(s):

HyeJin Shi ◽

Cheol-In Kang ◽

Sun Young Cho ◽

Kyungmin Huh ◽

Doo Ryeon Chung ◽

...

Keyword(s):

Urinary Tract ◽

Urinary Tract Infections ◽

Blood Cultures ◽

Tract Infections

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118. Factors Associated with Positive Follow-up Blood Cultures in Gram-Negative Septicemia

Open Forum Infectious Diseases ◽

10.1093/ofid/ofz360.193 ◽

2019 ◽

Vol 6 (Supplement_2) ◽

pp. S90-S90

Author(s):

Orly Hadar ◽

Amy Van ◽

Carla McWilliams ◽

Luis Wulff ◽

Linda Godinez

Keyword(s):

Odds Ratio ◽

Central Line ◽

Blood Cultures ◽

Cardiac Device ◽

Gram Negative ◽

Factors Associated ◽

Central Line Infection ◽

Line Infection

Abstract Background Bloodstream infections remain a significant cause of morbidity and mortality. No guidelines for the management of noncatheter-associated Gram-negative septicemia exist. There is considerable debate regarding the role of follow-up blood cultures. Studies have shown inadequate antibiotic therapy increases mortality in Gram-negative sepsis. We evaluated factors associated with a higher likelihood of positive follow-up blood cultures (FUBC). Methods A retrospective cohort study was conducted to look at factors associated with an increased likelihood of positive FUBC. Data were obtained via Epic chart review. Empiric antimicrobial regimens were reviewed in all patients with MDRO infections. Results We identified 1,527 patients ≥18 years admitted with gram-negative septicemia from January 1, 2013 through January 1, 2018. A total of 8.4% had positive FUBC. Patients with positive FUBC had a younger median age than the no-growth group (64.7 vs. 69.4, P <0.001). Admission systolic blood pressure was lower in the group with positive FUBC than the no-growth group (107 vs. 116, P = 0.008). The odds ratio for positive FUBC for cardiac device was 2.08 (95% CI = [0.97, 4.35], P = 0.061); central line infection (vs. urinary tract infection) adjusted odds ratio was 2.08 (95% CI = [1.10, 3.95], P = 0.025). The positive FUBC group had a larger proportion of multidrug-resistant organisms (MDRO) (21.9% vs. 10.4%, P < 0.001) with an odds ratio of 2.40 (95% CI = [1.53, 3.78]). In this group, those who received inadequate empiric antibiotics had a significantly higher percentage of repeat positive results (78.6% vs. 57.1%, P = 0.033). In summary, patients with either an MDRO, a central line infection (vs. urinary tract infection), or the presence of a cardiac device (vs. no cardiac device present) had over twice the odds of positive FUBC than those without. Conclusion Though the role of FUBC for Gram-negative septicemia has been brought into question, our results show that the presence of central lines, cardiac devices, infections with MDRO organisms, or inadequate empiric antibiotics on admission were factors strongly correlated with subsequent positive FUBC. Therefore, we believe that repeating blood cultures in this subset of patients require further study and consideration. Disclosures All authors: No reported disclosures.

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288. Follow-Up Blood Cultures in Gram-Negative Bacteremia: How Do They Impact Outcomes

Open Forum Infectious Diseases ◽

10.1093/ofid/ofaa439.331 ◽

2020 ◽

Vol 7 (Supplement_1) ◽

pp. S144-S144

Author(s):

Azza Elamin ◽

Faisal Khan ◽

Ali Abunayla ◽

Rajasekhar Jagarlamudi ◽

aditee Dash

Keyword(s):

Clinical Outcomes ◽

Antibiotic Treatment ◽

Readmission Rate ◽

Blood Cultures ◽

Categorical Variables ◽

Gram Negative ◽

Number Of Patients ◽

Significant Difference ◽

The Impact

Abstract Background As opposed to Staphylococcus. aureus bacteremia, there are no guidelines to recommend repeating blood cultures in Gram-negative bacilli bacteremia (GNB). Several studies have questioned the utility of follow-up blood cultures (FUBCs) in GNB, but the impact of this practice on clinical outcomes is not fully understood. Our aim was to study the practice of obtaining FUBCs in GNB at our institution and to assess it’s impact on clinical outcomes. Methods We conducted a retrospective, single-center study of adult patients, ≥ 18 years of age admitted with GNB between January 2017 and December 2018. We aimed to compare clinical outcomes in those with and without FUBCs. Data collected included demographics, comorbidities, presumed source of bacteremia and need for intensive care unit (ICU) admission. Presence of fever, hypotension /shock and white blood cell (WBC) count on the day of FUBC was recorded. The primary objective was to compare 30-day mortality between the two groups. Secondary objectives were to compare differences in 30-day readmission rate, hospital length of stay (LOS) and duration of antibiotic treatment. Mean and standard deviation were used for continuous variables, frequency and proportion were used for categorical variables. P-value < 0.05 was defined as statistically significant. Results 482 patients were included, and of these, 321 (67%) had FUBCs. 96% of FUBCs were negative and 2.8% had persistent bacteremia. There was no significant difference in 30-day mortality between those with and without FUBCs (2.9% and 2.7% respectively), or in 30-day readmission rate (21.4% and 23.4% respectively). In patients with FUBCs compared to those without FUBCs, hospital LOS was longer (7 days vs 5 days, P < 0.001), and mean duration of antibiotic treatment was longer (14 days vs 11 days, P < 0.001). A higher number of patients with FUBCs needed ICU care compared to those without FUBCs (41.4% and 25.5% respectively, P < 0.001) Microbiology of index blood culture in those with and without FUBCs Outcomes in those with and without FUBCs FUBCs characteristics Conclusion Obtaining FUBCs in GNB had no impact on 30-day mortality or 30-day readmission rate. It was associated with longer LOS and antibiotic duration. Our findings suggest that FUBCs in GNB are low yield and may not be recommended in all patients. Prospective studies are needed to further examine the utility of this practice in GNB. Disclosures All Authors: No reported disclosures

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Microbiome recovery in adult females with uncomplicated urinary tract infections in a randomised phase 2A trial of the novel antibiotic gepotidacin (GSK140944)

BMC Microbiology ◽

10.1186/s12866-021-02245-8 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Andrea Nuzzo ◽

Stephanie Van Horn ◽

Christopher Traini ◽

Caroline R. Perry ◽

Etienne F. Dumont ◽

...

Keyword(s):

Urinary Tract ◽

Urinary Tract Infections ◽

Human Microbiome ◽

Time Points ◽

Pharyngeal Cavity ◽

Adult Females ◽

Microbiome Diversity ◽

Antibiotic Drug ◽

Tract Infections

Abstract Background With increasing concerns about the impact of frequent antibiotic usage on the human microbiome, it is important to characterize the potential for such effects in early antibiotic drug development clinical trials. In a randomised Phase 2a clinical trial study that evaluated the pharmacokinetics of repeated oral doses of gepotidacin, a first-in-chemical-class triazaacenaphthylene antibiotic with a distinct mechanism of action, in adult females with uncomplicated urinary tract infections for gepotidacin (GSK2140944) we evaluated the potential changes in microbiome composition across multiple time points and body-sites (ClinicalTrials.gov: NCT03568942). Results Samples of gastrointestinal tract (GIT), pharyngeal cavity and vaginal microbiota were collected with consent from 22 patients at three time points relative to the gepotidacin dosing regimen; Day 1 (pre-dose), Day 5 (end of dosing) and Follow-up (Day 28 ± 3 days). Microbiota composition was determined by DNA sequencing of 16S rRNA gene variable region 4 amplicons. By Day 5, significant changes were observed in the microbiome diversity relative to pre-dose across the tested body-sites. However, by the Follow-up visit, microbiome diversity changes were reverted to compositions comparable to Day 1. The greatest range of microbiome changes by body-site were GIT followed by the pharyngeal cavity then vagina. In Follow-up visit samples we found no statistically significant occurrences of pathogenic taxa. Conclusion Our findings suggest that gepotidacin alteration of the human microbiome after 5 days of dosing is temporary and rebound to pre-dosing states is evident within the first month post-treatment. We recommend that future antibiotic drug trials include similar exploratory investigations into the duration and context of microbiome modification and recovery. Trial registration NCT03568942. Registered 26 June 2018.

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577. Incidence and Outcomes of Positive Outpatient Surveillance Blood Cultures in Hematopoietic Stem Cell Transplant (HSCT) Patients with Graft Versus Host Disease (GvHD) On High Dose ≥ 0.5 mg/kg/day (HD) and Low Dose < 0.5mg/kg/day (LD) Steroid Therapy

Open Forum Infectious Diseases ◽

10.1093/ofid/ofaa439.771 ◽

2020 ◽

Vol 7 (Supplement_1) ◽

pp. S353-S354

Author(s):

Sarah Perreault ◽

Molly Schiffer ◽

Jennifer Zhao ◽

Dayna McManus ◽

Francine Foss ◽

...

Keyword(s):

Steroid Therapy ◽

Central Line ◽

Blood Cultures ◽

High Dose ◽

Cell Transplant ◽

Coagulase Negative Staphylococci ◽

Hematopoietic Stem ◽

Surveillance Cultures ◽

Number Of Patients ◽

Clinically Significant

Abstract Background Treatment of GvHD with steroids increases the risk of infection in HSCT patients due to additive immunosuppression and may delay the diagnosis of infection due to lack of symptoms. Outpatient surveillance blood cultures in HSCT with GvHD being treated with HD steroids has demonstrated a blood culture positivity rate of 3.5%. Currently, the utility of surveillance cultures in patients receiving LD steroid therapy is unknown. Our practice includes weekly outpatient surveillance cultures for all GvHD patients treated with steroids regardless of the dose. The primary endpoint of this study was to assess the incidence of positive surveillance blood cultures in GvHD patients receiving HD or LD steroids. Secondary endpoints included number of patients treated, hospitalization, 30 day mortality due to infection, and organisms isolated. Methods This was a single-center, retrospective review of GvHD patients at Yale New Haven Hospital between January 2013 and May 2019. Patients were excluded if: lack of signs or symptoms of GvHD, treatment with steroids for any indication other than GvHD, and active GvHD without central line. Cultures from patients receiving antibiotics for concurrent infection were also excluded. Results A total of 71 patients met criteria with 901 blood cultures. On HD, eight patients (14%) had 12 positive cultures (4%), and on LD, 16 patients (25%) had 22 positive cultures (4%) (p=0.15). Treatment occurred in six patients (75%) with four (24%) requiring hospitalization on HD, and 12 patients (75%) with 10 (83%) requiring hospitalization on LD (p=0.45). The median duration of steroid therapy was 93 and 236 days with a median dose of steroids of 1mg/kg/day and 0.15mg/kg/day, respectively. The number of positive cultures/1000 steroid days was 1.2 on HD and 0.5 on LD (RR 2.2). 30 day mortality was only noted in one patient (8%) on LD. The most common organism in both groups was Coagulase-negative staphylococci with all six cultures on HD classified as contaminants and 6/10 cultures requiring treatment on LD. Conclusion Although the relative risk of positive surveillance blood cultures in HD patients compared to LD was twofold higher, there were clinically significant infections identified in the LD group. Disclosures All Authors: No reported disclosures

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Infeções do Trato Urinário numa Coorte de Transplantados Renais

Acta Médica Portuguesa ◽

10.20344/amp.4959 ◽

2014 ◽

Vol 27 (3) ◽

pp. 364 ◽

Cited By ~ 2

Author(s):

Ana Bispo ◽

Milene Fernandes ◽

Cristina Toscano ◽

Teresa Marques ◽

Domingos Machado ◽

...

Keyword(s):

Risk Factors ◽

Escherichia Coli ◽

Urinary Tract Infection ◽

Urinary Tract ◽

Tract Infection ◽

Urinary Tract Infections ◽

Hospital Admissions ◽

Female Gender ◽

Tract Infections

Introduction: Urinary tract infection is the most common infectious complication following renal transplantation and its frequency is insufficiently studied in Portugal. The aim of this study was to characterize the incidence of urinary tract infections and recurrent urinary tract infections in renal transplant recipients. Material and Methods: This was a retrospective cohort observational study, obtained from clinical files of all patients who received a renal transplant at the Hospital of Santa Cruz, from January 2004 to December 2005, with a mean follow-up period of five years or until date of graft loss, death or loss of follow-up. After a descriptive analysis of the population, we used bivariate tests to identify risk factors for urinary tract infections. Results: A total of 127 patients were included, with a 593 patients.year follow-up. We detected 53 patients (41.7%) presenting with at least one episode of urinary tract infection; 21 patients (16.5%) had recurrent urinary tract infection. Female gender was the only risk factor associated with the occurrence of urinary tract infections (p < 0.001, OR = 7.08, RR = 2.95) and recurrent urinary tract infections (p < 0.001, OR = 4.66, RR = 2.83). Escherichia coli (51.6%), Klebsiella pneumoniae (15.5%) and Enterobacter spp (9.9%) were the most frequently identified pathogens. Patients did not reveal an increased mortality or allograft loss. However, urinary tract infections were the most important cause of hospital admissions. Discussion: Female gender was the only risk factor for urinary tract infections in this population. Escherichia coli was the most frequent agent isolated. Conclusion: Despite preventive measures, urinary tract infections remain an important cause of morbidity and hospital admissions. Keywords: Urinary Tract Infections; Postoperative Complications; Risk Factors; Kidney Transplantation; Portugal.

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Urinothorax Caused by Xanthogranulomatous Pyelonephritis

Case Reports in Pulmonology ◽

10.1155/2018/7976839 ◽

2018 ◽

Vol 2018 ◽

pp. 1-3

Author(s):

Waiel Abusnina ◽

Hazim Bukamur ◽

Zeynep Koc ◽

Fauzi Najar ◽

Nancy Munn ◽

...

Keyword(s):

Urinary Tract ◽

Obstructive Uropathy ◽

Xanthogranulomatous Pyelonephritis ◽

Robot Assisted ◽

Rare Form ◽

X Ray ◽

History Of ◽

Chest X Ray ◽

Tract Infections

Xanthogranulomatous pyelonephritis is a rare form of chronic pyelonephritis that generally afflicts middle-aged women with a history of recurrent urinary tract infections. Its pathogenesis generally involves calculus obstructive uropathy and its histopathology is characterized by replacement of the renal parenchyma with lipid filled macrophages. This often manifests as an enlarged, nonfunctioning kidney that may be complicated by abscess or fistula. This case details the first reported case of xanthogranulomatous pyelonephritis complicated by urinothorax, which resolved on follow-up chest X-ray after robot-assisted nephrectomy.

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