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Pseudomonas bacteremia

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https://www.readbyqxmd.com/read/28205160/non-fermentative-gram-negative-rods-bacteremia-in-children-with-cancer-a-14-year-single-center-experience
#1
D Averbuch, C Avaky, M Harit, P Stepensky, I Fried, T Ben-Ami, V Temper, Y Peled, H Troen, R Masarwa, W Abu Ahmad, M Weintraub, S Revel-Vilk, D Engelhard
PURPOSE: Data on non-fermentative Gram-negative rods (NFGNR) bacteremia in children with malignancies are limited. The aim of this study was to present clinical picture, antimicrobial susceptibility pattern, risk factors for resistance and outcome in NFGNR bacteremia in children with cancer. METHODS: All episodes of NFGNR bacteremia occurring during 2001-2014 in children with cancer in a tertiary-care hospital were retrospectively analyzed. Pseudomonas and Acinetobacter spp...
February 15, 2017: Infection
https://www.readbyqxmd.com/read/28159015/a-randomized-placebo-controlled-phase-ii-study-of-a-pseudomonas-vaccine-in-ventilated-icu-patients
#2
Jordi Rello, Claus-Georg Krenn, Gottfried Locker, Ernst Pilger, Christian Madl, Laura Balica, Thierry Dugernier, Pierre-Francois Laterre, Herbert Spapen, Pieter Depuydt, Jean-Louis Vincent, Lajos Bogár, Zsuzsanna Szabó, Barbara Völgyes, Rafael Máñez, Nahit Cakar, Atilla Ramazanoglu, Arzu Topeli, Maria A Mastruzzo, Abel Jasovich, Christian G Remolif, Liliana Del Carmen Soria, Max A Andresen Hernandez, Carolina Ruiz Balart, Ildikó Krémer, Zsolt Molnár, Frank von Sonnenburg, Arthur Lyons, Michael Joannidis, Heinz Burgmann, Tobias Welte, Anton Klingler, Romana Hochreiter, Kerstin Westritschnig
BACKGROUND: Currently, no vaccine against Pseudomonas is available. IC43 is a new, recombinant, protein (OprF/I)-based vaccine against the opportunistic pathogen, Pseudomonas aeruginosa, a major cause of serious hospital-acquired infections. IC43 has proven immunogenicity and tolerability in healthy volunteers, patients with burns, and patients with chronic lung diseases. In order to assess the immunogenicity and safety of IC43 in patients who are most at risk of acquiring Pseudomonas infections, it was evaluated in mechanically ventilated ICU patients...
February 4, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28135778/recurrent-pseudomonas-aeruginosa-bacteremia-caused-by-an-intracardiac-toothpick
#3
Alejandro J Pellegrini, Maria T Carnuccio, Alcides Guillardot, Fernando Cichero, Diego Medlam, Héctor Perez
No abstract text is available yet for this article.
January 30, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28124968/-accurate-diagnosis-of-pseudomonas-luteola-in-routine-microbiology-laboratory-on-the-occasion-of-two-isolates
#4
Muharrem Çiçek, Gülşen Hasçelik, H Kaan Müştak, K Serdar Diker, Burçin Şener
Pseudomonas luteola which was previously known as Chryseomonas luteola; is a gram-negative, non-fermentative, aerobic, motile, non-spore-forming bacillus. It is frequently found as a saprophyte in soil, water and other damp environments and is an opportunistic pathogen in patients with underlying medical disorders or with indwelling catheters. It has been reported as an uncommon cause of bacteremia, sepsis, septic arthritis, meningitis, endocarditis, and peritonitis. Thus, early and accurate identification of this rare species is important for the treatment and also to provide information about the epidemiology of P...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28122629/bacteremia-caused-by-multidrug-resistant-bacteria-among-hospitalized-malnourished-children-in-mwanza-tanzania-a-cross-sectional-study
#5
Maimuna Ahmed, Mariam M Mirambo, Martha F Mushi, Adolfine Hokororo, Stephen E Mshana
BACKGROUND: Severe malnutrition has been known to increase susceptibility and severity of infections. Bacteremia in malnourished children has been found to increase morbidity and mortality especially if is due to multidrug resistant bacteria. Here, we report the prevalence of bacteremia among children under 5 years of age and the antibiotic susceptibility pattern of the isolates; the information that can be used by clinicians to guide on the empirical antibiotic treatment. FINDINGS: A total of 402 malnourished children were investigated for bacteremia...
January 25, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28087318/etiologies-of-community-onset-urinary-tract%C3%A2-infections-requiring-hospitalization-and%C3%A2-antimicrobial-susceptibilities-of%C3%A2-causative-microorganisms
#6
Chih-Chien Chiu, Tzu-Chao Lin, Rui-Xin Wu, Ya-Sung Yang, Po-Jen Hsiao, Yi Lee, Jung-Chung Lin, Feng-Yee Chang
BACKGROUND: Community-onset urinary tract infections (CoUTIs) are the most common bacterial infections, and a decline in antibiotic susceptibility causes many clinical challenges. Adequate empiric antibiotic treatment can decrease unnecessary hospital stays and complications, while reducing the antimicrobial resistance progression. METHODS: From October 2014 to April 2015, we retrospectively enrolled patients who were at least 18 years old and required hospitalization for CoUTIs...
December 18, 2016: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28087171/a-propensity-score-matched-analysis-of-the-impact-of-minimum-inhibitory-concentration-on-mortality-in-patients-with-pseudomonas-aeruginosa-bacteremia-treated-with-cefepime-or-ceftazidime
#7
Angharad R Ratliff, Chris A Gentry, Riley J Williams
The United States Clinical and Laboratory Standards Institute recently elected not to revise ceftazidime and cefepime Pseudomonas aeruginosa minimum inhibitory concentration (MIC) susceptibility breakpoints but rather recommended specific dosage regimens to correspond to breakpoints. This study's objective was to examine mortality of low and high MIC P. aeruginosa isolates in bacteremic patients treated with cefepime or ceftazidime. Data were gathered through a Veterans Health Administration national administrative database for veterans with P...
January 3, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28034598/carbapenem-resistant-pseudomonas-aeruginosa-association-with-virulence-genes-and-biofilm-formation
#8
Iara Rossi Gonçalves, Raquel Cristina Cavalcanti Dantas, Melina Lorraine Ferreira, Deivid William da Fonseca Batistão, Paulo Pinto Gontijo-Filho, Rosineide Marques Ribas
Pseudomonas aeruginosa is an opportunistic pathogen that causes frequently nosocomial infections, currently becoming more difficult to treat due to the various resistance mechanisms and different virulence factors. The purpose of this study was to determine the risk factors independently associated with the development of bacteremia by carbapenem-resistant P. aeruginosa, the frequency of virulence genes in metallo-β-lactamases producers and to evaluate their ability to produce biofilm. We conducted a case-control study in the Uberlândia Federal University - Hospital Clinic, Brazil...
November 26, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28034519/treatment-outcomes-in-infections-caused-by-spice-serratia-pseudomonas-indole-positive-proteus-citrobacter-and-enterobacter-organisms-carbapenem-versus-noncarbapenem-regimens
#9
Stanley Moy, Roopali Sharma
PURPOSE: Techniques used to identify AmpC β-lactamases in SPICE (Serratia, Pseudomonas, indole-positive Proteus, Citrobacter, and Enterobacter) organisms are not yet optimized for the clinical laboratory and are not routinely used. Clinicians are often left with an uncertainty on the choice of antibiotic when a SPICE organism is isolated. The purpose of this study was to evaluate the outcomes of carbapenem versus noncarbapenem regimens in treating bacteremia or urinary tract infection from a SPICE organism in clinical practice...
January 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/27994915/intravenous-colistin-use-for-multidrug-resistant-gram-negative-infections-in-pediatric-patients
#10
Ayşe Karaaslan, Eren Çağan, Eda Kepenekli Kadayifci, Serkan Atıcı, Gülşen Akkoç, Nurhayat Yakut, Sevliya Öcal Demir, Ahmet Soysal, Mustafa Bakır
BACKGROUND: The emergence of infections due to multidrug-resistant Gram-negative bacilli (MDR-GNB) has led to the resurrection of colistin use. The data on colistin use and drug-related adverse effects in children are scarce. AIMS: In this study, we aimed to evaluate the clinical efficacy and safety of colistin use in critically ill pediatric patients. STUDY DESIGN: This study has a retrospective study design. METHODS: Sixty-one critically ill children were identified through the department's patient files archive during the period from January 2011 to November 2014...
November 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27895127/the-pathogenic-potential-of-proteus-mirabilis-is-enhanced-by-other-uropathogens-during-polymicrobial-urinary-tract-infection
#11
Chelsie E Armbruster, Sara N Smith, Alexandra O Johnson, Valerie DeOrnellas, Kathryn A Eaton, Alejandra Yep, Lona Mody, Weisheng Wu, Harry L T Mobley
Urinary catheter use is prevalent in health care settings, and polymicrobial colonization by urease-positive organisms, such as Proteus mirabilis and Providencia stuartii, commonly occurs with long-term catheterization. We previously demonstrated that coinfection with P. mirabilis and P. stuartii increased overall urease activity in vitro and disease severity in a model of urinary tract infection (UTI). In this study, we expanded these findings to a murine model of catheter-associated UTI (CAUTI), delineated the contribution of enhanced urease activity to coinfection pathogenesis, and screened for enhanced urease activity with other common CAUTI pathogens...
February 2017: Infection and Immunity
https://www.readbyqxmd.com/read/27863948/tree-structured-survival-analysis-of-patients-with-pseudomonas-aeruginosa-bacteremia-a-multicenter-observational-cohort-study
#12
MULTICENTER STUDY
Young Kyung Yoon, Hyun Ah Kim, Seong Yeol Ryu, Eun Jung Lee, Mi Suk Lee, Jieun Kim, Seong Yeon Park, Kyung Sook Yang, Shin Woo Kim
This study aimed to construct a prediction algorithm, which is readily applicable in the clinical setting, to determine the mortality rate for patients with P. aeruginosa bacteremia. A multicenter observational cohort study was performed retrospectively in seven university-affiliated hospitals in Korea from March 2012 to February 2015. In total, 264 adult patients with monomicrobial P. aeruginosa bacteremia were included in the analyses. Among the predictors independently associated with 30-day mortality in the Cox regression model, Pitt bacteremia score >2 and high-risk source of bacteremia were identified as critical nodes in the tree-structured survival analysis...
February 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27850323/684-impact-of-antibiotic-mic-in-a-va-population-with-pseudomonas-bacteremia-or-pneumonia
#13
Stephanie Bird, Shazia Raheem, Brooke Herndon, Amit Pulickan, Charlie Lan, Daniel Musher
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27826063/survival-after-multiple-traumas-is-associated-with-improved-outcomes-from-gram-negative-sepsis-clinical-and-experimental-evidence
#14
Eleftherios Mandragos, Aikaterini Pistiki, Iraklis Tsangaris, Christina Routsi, Michael Paraschos, Dionyssia-Irene Droggiti, Olga Savvidou, Dimitrios Mastrokalos, Panayiotis J Papagelopoulos, Mihai G Netea, Evangelos J Giamarellos-Bourboulis
OBJECTIVES: We investigated the susceptibility to Gram-negative sepsis after multiple traumas (MT). METHODS: From a prospective cohort of 5076 Greek patients with sepsis, 16 with Gram-negative bacteremia after MT were compared with 204 patients well-matched for severity, comorbidities and appropriateness of antimicrobials; circulating mononuclear cells were isolated and stimulated for the release of interleukin (IL)-10. Male C57Bl6J mice were subject to MT (right pneumothorax and right femur fracture) followed after 72 h by the intravenous challenge with Pseudomonas aeruginosa...
November 5, 2016: Journal of Infection
https://www.readbyqxmd.com/read/27821456/carbapenem-resistant-pseudomonas-aeruginosa-bacteremia-risk-factors-for-mortality-and-microbiologic-treatment-failure
#15
Deanna J Buehrle, Ryan K Shields, Lloyd G Clarke, Brian A Potoski, Cornelius J Clancy, M Hong Nguyen
We reviewed 37 patients treated for bacteremia due to carbapenem-resistant (CR) Pseudomonas aeruginosa Although 65% of isolates were multiple-drug resistant, therapeutic options were available, as all were susceptible to ≥1 antibiotic. A total of 92% of patients received active antimicrobial therapy, but only 57% received early active therapy (within 48 h). Fourteen-day mortality was 19%. Microbiologic failure occurred in 29%. The Pitt bacteremia score (P = 0.046) and delayed active therapy (P = 0.027) were predictive of death and microbiologic failure, respectively...
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27818808/persistent-bacteremia-from-pseudomonas-aeruginosa-with-in-vitro-resistance-to-the-novel-antibiotics-ceftolozane-tazobactam-and-ceftazidime-avibactam
#16
Louie Mar Gangcuangco, Patricia Clark, Cynthia Stewart, Goran Miljkovic, Zane K Saul
Ceftazidime-avibactam and ceftolozane-tazobactam are new antimicrobials with activity against multidrug-resistant Pseudomonas aeruginosa. We present the first case of persistent P. aeruginosa bacteremia with in vitro resistance to these novel antimicrobials. A 68-year-old man with newly diagnosed follicular lymphoma was admitted to the medical intensive care unit for sepsis and right lower extremity cellulitis. The patient was placed empirically on vancomycin and piperacillin-tazobactam. Blood cultures from Day 1 of hospitalization grew P...
2016: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/27754817/acute-inflammatory-response-of-patients-with-pseudomonas-aeruginosa-infections-a-prospective-study
#17
Silvia Gómez-Zorrilla, Francisco Morandeira, María José Castro, Fe Tubau, Elisabet Periche, Rosario Cañizares, María Angeles Dominguez, Javier Ariza, Carmen Peña
The severity of Pseudomonas aeruginosa (PA) infection may be determined by the interaction with the host immune system. We designed a prospective study to assess the relationship between the inflammatory response and the clinical presentation and outcome of PA infection. We also investigated whether there are differences in the inflammatory response depending on the resistance profile of PA. Interleukin-6 (IL-6), IL-10, procalcitonin (PCT), and C-reactive protein (CRP) were measured. Sixty-nine infection episodes were recorded; 40 caused by non-multidrug-resistant (non-MDR) strains [29 (73%) respiratory; 8 (20%) bacteremia], 12 by MDR non-extensively drug-resistant (MDR-non-XDR) [9 (75%) respiratory; 3 (25%) bacteremia], and 17 by XDR strains [9 (53%) respiratory; 7 (41%) bacteremia]...
October 18, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27719726/-the-clinical-feature-and-outcomes-of-severe-aplastic-anemia-patients-suffered-from-bacteremia-following-antithymocyte-globulin
#18
X X Li, M Wang, Y Q Shao, N Nie, J Shi, Z D Huang, J Zhang, M L Ge, J B Huang, Y Z Zheng
Objective: To assess the clinical feature and outcomes of severe aplastic anemia (SAA) patients suffered from bacteremia following antithymocyte globulin (ATG). Methods: A total of 264 cases hospitalized in our hospital between Jan 2000 and July 2011 were enrolled into this study. We evaluated the associated pathogens of bacteremia, analyzed the risk factors by Logistic regression and estimated the overall survival (OS) by Kaplan-Meier method for the cohort of patients. Results: Bloodstream infections occurred in 49 patients, with a median age of 20 (4-62) years, including 38 cases with very SAA (VSAA) and 11 SAA patients...
September 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/27716406/pseudomonas-mendocina-native-valve-infective-endocarditis-a-case-report
#19
Glenn J Rapsinski, Jina Makadia, Nitin Bhanot, Zaw Min
BACKGROUND: Gram-negative microorganisms are uncommon pathogens responsible for infective endocarditis. Pseudomonas mendocina, a Gram-negative water-borne and soil-borne bacterium, was first reported to cause human infection in 1992. Since then, it has rarely been reported as a human pathogen in the literature. We describe the first case of native valve infective endocarditis due to P. mendocina in the USA. CASE PRESENTATION: A 57-year-old white man presented with bilateral large leg ulcers, fever, and marked leukocytosis...
October 4, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27703454/exome-sequencing-reveals-primary-immunodeficiencies-in-children-with-community-acquired-pseudomonas-aeruginosa-sepsis
#20
Samira Asgari, Paul J McLaren, Jane Peake, Melanie Wong, Richard Wong, Istvan Bartha, Joshua R Francis, Katia Abarca, Kyra A Gelderman, Philipp Agyeman, Christoph Aebi, Christoph Berger, Jacques Fellay, Luregn J Schlapbach
One out of three pediatric sepsis deaths in high income countries occur in previously healthy children. Primary immunodeficiencies (PIDs) have been postulated to underlie fulminant sepsis, but this concept remains to be confirmed in clinical practice. Pseudomonas aeruginosa (P. aeruginosa) is a common bacterium mostly associated with health care-related infections in immunocompromised individuals. However, in rare cases, it can cause sepsis in previously healthy children. We used exome sequencing and bioinformatic analysis to systematically search for genetic factors underpinning severe P...
2016: Frontiers in Immunology
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