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acinetobacter baumannii bloodstream infections

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https://www.readbyqxmd.com/read/28705768/the-clinical-and-microbiological-characteristics-of-infections-in-burn-patients-from-the-formosa-fun-coast-dust-explosion
#1
Tzu-Chao Lin, Rui-Xin Wu, Chih-Chien Chiu, Ya-Sung Yang, Yi Lee, Jung-Chung Lin, Feng-Yee Chang
BACKGROUND/PURPOSE: Bloodstream infection is a leading cause of mortality among burn patients. This study aimed to evaluate the risk factors, causative pathogens, and the relationship between bloodstream infections and other infections among burn patients from the Formosa Fun Coast Dust Explosion. METHODS: This retrospective study evaluated the demographic and clinical characteristics, infection types, causative pathogen(s), and isolates' antibiotic susceptibilities from patients who were hospitalized between June 27 and September 31, 2015...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28701266/community-acquired-bloodstream-infections-caused-by-acinetobacter-baumannii-a%C3%A2-matched-case-control-study
#2
Chung-Ting Chen, Yung-Chih Wang, Shu-Chen Kuo, Fang-Huy Shih, Te-Li Chen, Chorng-Kuang How, Ya-Sung Yang, Yi-Tzu Lee
BACKGROUND: Acinetobacter baumannii is an important nosocomial pathogen worldwide. Its role in community-acquired infection remains controversial and has rarely been reported. METHODS: Patients with monobacterial bloodstream infections caused by genomic species identified A. baumannii, admitted to Taipei Veterans General Hospital between 1999 and 2010, were selected as cases. Controls were defined as patients acquiring infection in a healthcare setting and were matched for age and sex...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28642142/epidemiology-and-outcomes-of-bloodstream-infections-in-177-severe-burn-patients-from-an-industrial-disaster-a-multicenter-retrospective-study
#3
Chenqi Tang, Junqiang Li, Beiming Shou, Bohan Pan, Tiansheng Chen, Yongqiang Xiao, Xiaopeng Zheng, Shichu Xiao, Qian Tan, Zhaofan Xia
OBJECTIVES: To determine the characteristics of bloodstream infections (BSIs) and to evaluate the impact of BSIs on mortality in severe burn patients. METHODS: A retrospective observational study was conducted in 20 tertiary hospitals. A total of 185 Patients who experienced a massive dust explosion in eastern China were included. RESULTS: After exclusion, 177 patients were analyzed. The median total body surface area (TBSA) burned was 95% (interquartile range [IQR], 85%-98%)...
June 19, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28578555/infections-due-to-acinetobacter-baumannii-in-the-icu-treatment-options
#4
Joseph P Lynch, George G Zhanel, Nina M Clark
Bacteria within the genus Acinetobacter (principally A. baumannii-calcoaceticus complex [ABC]) are gram-negative coccobacilli that may cause nosocomial infections in critically ill or debilitated patients (particularly ventilator-associated pneumonia and infections of the bloodstream, urinary tract, and wounds). Treatment of Acinetobacter infections is difficult, as Acinetobacter spp. are intrinsically resistant to multiple antimicrobial agents, and have a remarkable ability to acquire new resistance determinants via mechanisms that include plasmids, transposons, integrons, and resistance islands...
June 2017: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28458799/the-use-of-bloodstream-infection-mortality-to-measure-the-impact-of-antimicrobial-stewardship-interventions-assessing-the-evidence
#5
REVIEW
Sonali Coulter, Jason A Roberts, Krispin Hajkowicz, Kate Halton
This review sets out to evaluate the current evidence on the impact of inappropriate therapy on bloodstream infections (BSI) and associated mortality. Based on the premise that better prescribing practices should result in better patient outcomes, BSI mortality may be a useful metric to evaluate antimicrobial stewardship (AMS) interventions. A systematic search was performed in key medical databases to identify papers published in English between 2005 and 2015 that examined the association between inappropriate prescribing and BSI mortality in adult patients...
March 30, 2017: Infectious Disease Reports
https://www.readbyqxmd.com/read/28448786/microbiological-features-and-clinical-impact-of-the-type-vi-secretion-system-t6ss-in-acinetobacter-baumannii-isolates-causing-bacteremia
#6
Jungok Kim, Ji-Young Lee, Haejeong Lee, Ji Young Choi, Dae Hun Kim, Yu Mi Wi, Kyong Ran Peck, Kwan Soo Ko
We investigated the genetic background and microbiological features of T6SS-positive Acinetobacter baumannii isolates and clinical impact of the T6SS in patients with A. baumannii bacteremia. One hundred and 62 A. baumannii isolates from patients with bacteremia in 2 tertiary-care hospitals in Korea were included in this study. Approximately one-third (51/162, 31.5%) of the A. baumannii clinical isolates possessed the hcp gene, and the hcp-positive isolates were found in several genotypes in multilocus sequence typing...
April 27, 2017: Virulence
https://www.readbyqxmd.com/read/28448572/clonality-virulence-determinants-and-profiles-of-resistance-of-clinical-acinetobacter-baumannii-isolates-obtained-from-a-spanish-hospital
#7
Elias Dahdouh, Rosa Gómez-Gil, Sonsoles Pacho, Jesús Mingorance, Ziad Daoud, Monica Suárez
INTRODUCTION: Acinetobacter baumannii is a nosocomial pathogen that is showing increasing rates of carbapenem resistance. Multi-Drug Resistant (MDR) International Clones (ICs), associated with certain oxacillinases, are being reported globally. This organism also harbors numerous virulence determinants. In this study, we aim at characterizing A. baumannii isolated from a Spanish hospital in terms of antimicrobial susceptibility, clonality, carbapenemase genes harbored, and virulence determinants expressed...
2017: PloS One
https://www.readbyqxmd.com/read/28408938/bacteraemia-in-intensive-care-unit-clinical-bacteriological-and-prognostic-prospective-study
#8
Zineb Lachhab, Mohammed Frikh, Adil Maleb, Jalal Kasouati, Nouafal Doghmi, Yassine Ben Lahlou, Bouchra Belefquih, Abdelhay Lemnouer, Mostafa Elouennass
Objectives. We conducted a one-year observational study from December 2012 to November 2013 to describe the epidemiology of bacteraemia in intensive care units (ICU) of Mohammed V Military Teaching Hospital of Rabat (Morocco). Methods. The study consisted of monitoring all blood cultures coming from intensive care units and studying the bacteriological profile of positive blood cultures as well as their clinical significance. Results. During this period, a total of 46 episodes of bacteraemia occurred, which corresponds to a rate of 15,4/1000 patients...
2017: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/28325579/burden-of-healthcare-associated-infections-in-china-results-of-the-2015-point-prevalence-survey-in-dong-guan-city
#9
J Wang, J Hu, S Harbarth, D Pittet, M Zhou, W Zingg
BACKGROUND: Healthcare-associated infections (HCAIs) are a major health threat. There are few data about HCAI and antibiotic use in the People's Republic of China in the English literature. AIM: To describe and discuss the prevalence of HCAI and antibiotic use from the 2015 point prevalence survey (PPS) in Dong Guan City. METHODS: In 2015, the Dong Guan (City) Nosocomial Infection Control and Quality Improvement Centre organized its yearly PPS in the secondary and tertiary care hospitals of Dong Guan City...
February 17, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28287300/clinical-and-molecular-epidemiology-of-acinetobacter-baumannii-bloodstream-infections-in-an-endemic-setting
#10
Dror Marchaim, Dana Levit, Roy Zigron, Michal Gordon, Tsillia Lazarovitch, Joao A Carrico, Vered Chalifa-Caspi, Jacob Moran-Gilad
AIM: The transmission dynamics of Acinetobacter baumannii in endemic settings, and the relation between microbial properties and patients' clinical outcomes, are yet obscure and hampered by insufficient metadata. METHODS & RESULTS: Of 20 consecutive patients with A. baumannii bloodstream infection that were thoroughly analyzed at a single center, at least one transmission opportunity was evident for 85% of patients. This implies that patient-to-patient transmission is the major mode of A...
March 2017: Future Microbiology
https://www.readbyqxmd.com/read/28139542/an-audit-of-colistin-use-in-neonatal-sepsis-from-a-tertiary-care-centre-of-a-resource-limited-country
#11
Bonny Jasani, Sridharan Kannan, Ruchi Nanavati, Nithya J Gogtay, Urmila Thatte
BACKGROUND & OBJECTIVES: Sepsis due to multidrug-resistant Gram-negative pathogens is a challenge for clinicians and microbiologists and has led to use of parenteral colistin. There is a paucity of data regarding safety and efficacy of intravenous colistin use in neonates. The objective of this retrospective analysis was to study the efficacy and safety of intravenous colistin in the treatment of neonatal sepsis. METHODS: An audit of the data from neonates, admitted to a neonatal intensive care unit of a tertiary care hospital during January 2012 to December 2012, and who received intravenous colistin was carried out...
September 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28109554/clinical-and-microbiological-characteristics-of-bloodstream-infections-among-patients-with-haematological-malignancies-with-and-without-neutropenia-at-a-medical-centre-in-northern-taiwan-2008-2013
#12
Chien-Yuan Chen, Feng-Ming Tien, Wang-Huei Sheng, Shang-Yi Huang, Ming Yao, Jih-Luh Tang, Woei Tsay, Hwei-Fang Tien, Po-Ren Hsueh
This study aimed to investigate the epidemiology and microbiology of bloodstream infections (BSIs) in patients with haematological malignancies. Clinical characteristics and microbiology of 2083 patients with haematological malignancy who were treated for BSI from 2008 to 2013 at a medical centre in Taiwan were retrospectively reviewed. Lymphoma (38.1%) was the most common, followed by acute myeloid leukaemia (30.9%). Of the 2090 non-duplicate BSI isolates, 1310 (62.7%) were recovered from patients with neutropenia...
March 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28007308/a-point-prevalence-survey-of-healthcare-associated-infection-in-fifty-two-chinese-hospitals
#13
Y Chen, J Y Zhao, X Shan, X L Han, S G Tian, F Y Chen, X T Su, Y S Sun, L Y Huang, L Han
BACKGROUND: Healthcare-associated infection (HCAI) represents a major problem for patient safety worldwide. AIM: To demonstrate the prevalence, causative agents, and risk factors for HCAI in Chinese hospitals. METHODS: A one-day point-prevalence survey was conducted in 52 Chinese hospitals between October 2014 and March 2015. A web-based software system was developed for data entry and management. FINDINGS: Among 53,939 patients surveyed, the prevalence of patients with at least one HCAI was 3...
January 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27955639/control-of-carbapenem-resistant-acinetobacter-baumannii-outbreak-in-an-intensive-care-unit-of-a-teaching-hospital-in-southern-italy
#14
Aida Bianco, Angela Quirino, Mariavalentina Giordano, Vito Marano, Claudia Rizzo, Maria Carla Liberto, Alfredo Focà, Maria Pavia
BACKGROUND: Acinetobacter baumannii is an opportunistic pathogen that has become a major cause of concern, since it is a frequent cause of healthcare-associated infections (HAIs). The aim of the study was to describe the occurrence, the management and the control of an outbreak that occurred in an intensive care unit (ICU) of a teaching hospital in Southern Italy caused by multiple strains of extensively drug-resistant A. baumannii (XDRAB). METHODS: Case-patient was defined as a patient with an healthcare-associated infection caused by an XDRAB isolate identified in a clinically significant culture...
December 12, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27895018/occurrence-of-diverse-abgri1-type-genomic-islands-in-acinetobacter-baumannii-global-clone-2-isolates-from-south-korea
#15
Dae Hun Kim, Sook-In Jung, Ki Tae Kwon, Kwan Soo Ko
In this study, we analyzed the frequency of the AbGRI1-type genomic island (GI) and its association with genotypes. We obtained 130 Acinetobacter baumannii isolates causing bloodstream infections from patients in South Korea. Antimicrobial susceptibility testing and multilocus sequence typing were performed. The presence of AbGRI1-type GIs and their structures were determined by sequential PCR and sequencing. Ninety-eight isolates (75.3%) representing 14 sequence types (STs) belonged to clonal complex 208 (CC208), corresponding to global clone 2 (GC2)...
February 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27852378/-analysis-of-the-protein-expression-differences-between-colonized-and-infectious-multidrug-resistant-acinetobacter-baumannii
#16
W J Sui, M Wang, Y F Huang, X X Lu
Objective: To analyze the protein expression differences between colonized multidrug-resistant acinetobacter baumannii (MDR-AB) and infectious MDR-AB using comparative proteomics and matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) and to explore the molecular characteristics of MDR-AB infections. Methods: A total of 59 MDR-AB strains including 23 of bloodstream infections MDR-AB and 36 of nasal, pharyngeal or environmental colonization MDR-AB were collected from Beijing Tongren Hospital between January 2008 and December 2011...
November 8, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27728770/investigation-of-extensively-drug-resistant-blaoxa-23-producing-acinetobacter-baumannii-spread-in-a-greek-hospital
#17
Angeliki Mavroidi, Maria Katsiari, Eleftheria Palla, Sofia Likousi, Zoi Roussou, Charikleia Nikolaou, Evangelia D Platsouka
A rapid increase was observed in the incidence of extensively drug-resistant Acinetobacter baumannii (XDR Aba) isolates in a Greek hospital during 2014. To investigate the causes of this rise, the antimicrobial resistance profiles of all carbapenem-resistant (CARB-R) Aba isolates recovered during 2014-2015 were determined. Selected XDR Aba isolates (n = 13) were characterized by molecular methods. XDR Aba (48 isolates) represented 21.4% of the 224 CARB-R Aba recovered during the study period. The 13 selected XDR Aba isolates were positive for the blaOXA-23, the intrinsic blaOXA-51, and the adeB gene of the AdeABC efflux pump, and all belonged to the 3LST ST101, corresponding to the international clone II...
June 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27688611/bloodstream-infections-in-febrile-neutropenic-patients-at-a-tertiary-cancer-institute-in-south-india-a-timeline-of-clinical-and-microbial-trends-through-the-years
#18
K Govind Babu, D Lokanatha, K C Lakshmaiah, M C Suresh Babu, Linu A Jacob, Gita R Bhat, Harsha Vardhana, Mahua Sinha, B R Vijaykumar, B G Sumati, R S Jayshree
INTRODUCTION: Febrile neutropenia (FN) is an oncological emergency. The choice of empiric therapy depends on the locally prevalent pathogens and their sensitivities, the sites of infection, and cost. The Infectious Diseases Society of America guidelines are being followed for the management of FN in India. METHODS: This is a prospective observational study conducted at a tertiary care cancer centre from September 2012 to September 2014. OBJECTIVES: The objectives of this study were as follows: (1) To review the pattern of microbial flora, susceptibility pattern, and important clinical variables among bloodstream infections in febrile neutropenic patients with solid tumors and hematological malignancies...
July 2016: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/27677795/acinetobacter-baumannii-coordinates-urea-metabolism-with-metal-import-to-resist-host-mediated-metal-limitation
#19
Lillian J Juttukonda, Walter J Chazin, Eric P Skaar
During infection, bacterial pathogens must adapt to a nutrient metal-limited environment that is imposed by the host. The innate immune protein calprotectin inhibits bacterial growth in vitro by chelating the divalent metal ions zinc (Zn(2+), Zn) and manganese (Mn(2+), Mn), but pathogenic bacteria are able to cause disease in the presence of this antimicrobial protein in vivo. One such pathogen is Acinetobacter baumannii, a Gram-negative bacterium that causes pneumonia and bloodstream infections that can be complicated by resistance to multiple antibiotics...
September 27, 2016: MBio
https://www.readbyqxmd.com/read/27659437/a-5-year-surveillance-study-on-antimicrobial-resistance-of-acinetobacter-baumannii-clinical-isolates-from-a-tertiary-greek-hospital
#20
Sofia Maraki, Elpis Mantadakis, Viktoria Eirini Mavromanolaki, Diamantis P Kofteridis, George Samonis
BACKGROUND: Acinetobacter baumannii has emerged as a major cause of nosocomial outbreaks. It is particularly associated with nosocomial pneumonia and bloodstream infections in immunocompromised and debilitated patients with serious underlying pathologies. Over the last two decades, a remarkable rise in the rates of multidrug resistance to most antimicrobial agents that are active against A. baumannii has been noted worldwide. We evaluated the rates of antimicrobial resistance and changes in resistance over a 5-year period (2010-2014) in A...
September 2016: Infection & Chemotherapy
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