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Microbiology of pneumonia

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https://www.readbyqxmd.com/read/28222811/recurring-septic-shock-in-a-patient-with-blunt-abdominal-and-pelvic-trauma-how-mandatory-is-source-control-surgery-a-case-report
#1
Antonella Frattari, Giustino Parruti, Rocco Erasmo, Luigi Guerra, Ennio Polilli, Rosamaria Zocaro, Giuliano Iervese, Paolo Fazii, Tullio Spina
BACKGROUND: In critically ill patients with colonization/infection of multidrug-resistant organisms, source control surgery is one of the major determinants of clinical success. In more complex cases, the use of different tools for sepsis management may allow survival until complete source control. CASE PRESENTATION: A 42-year-old white man presented with traumatic hemorrhagic shock. Unstable pelvic fractures led to emergency stabilization surgery. Fever ensued with diarrhea, followed by septic shock...
February 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28221200/pathogenic-link-between-postextubation-pneumonia-and-ventilator-associated-pneumonia-an-experimental-study
#2
Emanuele Rezoagli, Alberto Zanella, Massimo Cressoni, Lorenzo De Marchi, Theodor Kolobow, Lorenzo Berra
BACKGROUND: The presence of an endotracheal tube is the main cause for developing ventilator-associated pneumonia (VAP), but pneumonia can still develop in hospitalized patients after endotracheal tube removal (postextubation pneumonia [PEP]). We hypothesized that short-term intubation (24 hours) can play a role in the pathogenesis of PEP. To test such hypothesis, we initially evaluated the occurrence of lung colonization and VAP in sheep that were intubated and mechanically ventilated for 24 hours...
February 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28216018/prospective-randomised-controlled-study-evaluating-early-modification-of-oral-microbiota-following-admission-to-the-intensive-care-unit-and-oral-hygiene-with-chlorhexidine
#3
Felipe Francisco Tuon, Oleg Gavrilko, Saulo de Almeida, Eigi Ricardo Sumi, Thiago Alberto, Jaime Luis Rocha, Edvaldo Antonio Rosa
OBJECTIVES: Chlorhexidine (CHX) is the most commonly used oral hygiene product for the prevention of ventilator-associated pneumonia (VAP) in patients undergoing mechanical ventilation (MV). The change in dental plaque (DP) microbiota following CHX use in patients under MV has not been described previously. The aim of this study was to evaluate the incidence of pathogenic bacteria associated with VAP and the coverage of DP within the oral cavity in patients administered CHX. METHODS: This was a prospective, randomised, controlled, double-blind study in patients (n=16) under MV who were mouth-rinsed with either CHX or placebo...
February 18, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28210888/double-carbapenem-combination-as-salvage-therapy-for-untreatable-infections-by-kpc-2-producing-klebsiella-pneumoniae
#4
M Souli, I Karaiskos, A Masgala, L Galani, E Barmpouti, H Giamarellou
We report our experience using the double-carbapenem combination as salvage therapy for patients with untreatable infections caused by KPC-2- producing Klebsiella pneumoniae. A total of 27 patients in two institutions in Athens, Greece suffering from complicated urinary tract infections (16) with or without secondary bacteraemia (four and 12 respectively), primary (six) or catheter-related bloodstream infections (two), HAP or VAP (two) and external ventricular drainage infection (one) were treated exclusively with ertapenem and high-dose prolonged infusion meropenem because in-vitro active antimicrobials were unavailable (19) or failed (four) or were contraindicated (six)...
February 16, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28208857/emergence-of-hospital-acquired-carbapenem-resistant-non-fermenters-in-teaching-institute
#5
Hariom Sharan, Neeraj Katare, Aparna Pandey, Ganesh Shivmurti Bhatambare, Trupti Bajpai
INTRODUCTION: Non-Fermenting Gram Negative Bacilli (NFGNB) are emerging now-a-days because of their tendency to colonize various surfaces and inherent resistance to commonly used disinfectants. They are responsible for multi-drug resistant hospital acquired infections. Detection of carbapenem resistance mechanisms is essential for treatment and infection control purpose as can spread to other organisms causing hospital outbreaks. AIM: To characterize non-fermenters from various clinical samples and to detect different carbapenem resistance mechanisms in meropenem resistant isolates...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205635/deciphering-the-distance-to-antibiotic-resistance-for-the-pneumococcus-using-genome-sequencing-data
#6
Fredrick M Mobegi, Amelieke J H Cremers, Marien I de Jonge, Stephen D Bentley, Sacha A F T van Hijum, Aldert Zomer
Advances in genome sequencing technologies and genome-wide association studies (GWAS) have provided unprecedented insights into the molecular basis of microbial phenotypes and enabled the identification of the underlying genetic variants in real populations. However, utilization of genome sequencing in clinical phenotyping of bacteria is challenging due to the lack of reliable and accurate approaches. Here, we report a method for predicting microbial resistance patterns using genome sequencing data. We analyzed whole genome sequences of 1,680 Streptococcus pneumoniae isolates from four independent populations using GWAS and identified probable hotspots of genetic variation which correlate with phenotypes of resistance to essential classes of antibiotics...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205429/-pneumococcal-arthritis-in-paediatric-population
#7
G Barbeito-Castiñeiras, M Guinda-Giménez, O Cores-Calvo, M Hernández-Blanco, F Pardo-Sánchez
OBJECTIVE: Cases of septic arthritis in paediatric population by Streptococcus pneumoniae in the Health Area of Santiago de Compostela (Spain) were reviewed. METHODS: A retrospective study from January 2005 to March 2014 was conducted for all S. pneumoniae isolates obtained from joint fluids in children. RESULTS: From the 7,416 joint fluids received in the Microbiology Department, 77 belonged to paediatric patients, and of these, only 8 had positive culture...
February 16, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28203549/microbiological-and-clinical-characteristics-of-hypermucoviscous-klebsiella-pneumoniae-isolates-associated-with-invasive-infections-in-china
#8
Yinjuan Guo, Shanshan Wang, Lingling Zhan, Ye Jin, Jingjing Duan, Zhihao Hao, Jingnan Lv, Xiuqin Qi, Liang Chen, Barry N Kreiswirth, Liangxing Wang, Fangyou Yu
A distinctive syndrome caused by hypermucoviscous Klebsiella pneumoniae (HMKP) including pyogenic liver abscess (PLA) is now becoming a globally emerging disease. In the present study, 22.8% (84/369) of K. pneumoniae clinical isolates associated with various types of invasive infections were identified as HMKP, with 45.2% associated with PLA. Multivariate regression analysis showed that male patients with 41-50 years, PLA, diabetes mellitus, and hypertension were independent risk factors for HMKP infections...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28203232/cationic-net-charge-and-counter-ion-type-as-antimicrobial-activity-determinant-factors-of-short-lipopeptides
#9
Katarzyna E Greber, Malgorzata Dawgul, Wojciech Kamysz, Wieslaw Sawicki
To get a better insight into the antimicrobial potency of short cationic lipopeptides, 35 new entities were synthesized using solid phase peptide strategy. All newly obtained lipopeptides were designed to be positively charged from +1 to +4. This was achieved by introducing basic amino acid - lysine - into the lipopeptide structure and had a hydrophobic fatty acid chain attached. Lipopeptides were subjected to microbiological tests using reference strains of Gram-negative bacteria: Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Pseudomonas aeruginosa, Gram-positive bacteria: Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis, Enterococcus faecalis, and fungi: Candida albicans, Candida tropicalis, Aspergillus brasiliensis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28198726/community-acquired-pneumonia-requiring-hospitalization-rational-decision-making-and-interpretation-of-guidelines
#10
Douwe F Postma, Cornelis H van Werkhoven, Jan Jelrik Oosterheert
PURPOSE OF REVIEW: This review focuses on the evidence base for guideline recommendations on the diagnosis, the optimal choice, timing and duration of empirical antibiotic therapy, and the use of microbiological tests for patients hospitalized with community-acquired pneumonia (CAP): issues for which guidelines are frequently used as a quick reference. Furthermore, we will discuss possibilities for future research in these topics. RECENT FINDINGS: Many national and international guideline recommendations, even on critical elements of CAP management, are based on low-to-moderate quality evidence...
February 13, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28185802/infection-in-burn-patients-in-a-referral-center-in-colombia
#11
Carlos Enrique Ramirez-Blanco, Carlos Enrique Ramirez-Rivero, Luis Alfonso Diaz-Martinez, Luis Miguel Sosa-Avila
INTRODUCTION: Worldwide, burns are responsible for more than 300,000 deaths annually; infection is a major cause of morbidity and mortality in these patients. Early identification and treatment of infection improves outcome. Toward this end it's necessary to identify the institutions flora and organisms that most frequently produces infection. OBJECTIVES: To characterize infections developed by burn patients hospitalized at the University Hospital of Santander (HUS)...
February 6, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28182108/assessment-of-the-usefulness-of-multiplex-real-time-pcr-tests-in-the-diagnostic-and-therapeutic-process-of-pneumonia-in-hospitalized-children-a-single-center-experience
#12
Ewelina Gowin, Alicja Bartkowska-Śniatkowska, Katarzyna Jończyk-Potoczna, Joanna Wysocka-Leszczyńska, Waldemar Bobkowski, Piotr Fichna, Paulina Sobkowiak, Katarzyna Mazur-Melewska, Anna Bręborowicz, Jacek Wysocki, Danuta Januszkiewicz-Lewandowska
The aim of the study was assessment of the usefulness of multiplex real-time PCR tests in the diagnostic and therapeutic process in children hospitalized due to pneumonia and burdened with comorbidities. Methods. The study group included 97 children hospitalized due to pneumonia at the Karol Jonscher Teaching Hospital in Poznań, in whom multiplex real-time PCR tests (FTD respiratory pathogens 33; fast-track diagnostics) were used. Results. Positive test results of the test were achieved in 74 patients (76...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28181033/clinical-and-microbiological-determinants-of-severe-and-fatal-outcomes-in-patients-infected-with-enterobacteriaceae-producing-extended-spectrum-%C3%AE-lactamase
#13
L Surgers, A Boyd, P-Y Boelle, V Lalande, P-A Jolivot, P-M Girard, G Arlet, C Cambier, A Homor, D Decre, J-L Meynard
Although extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae have become a worldwide public health concern, little is known regarding the clinical course of colonized or infected individuals. Our objective was to characterize the determinants of fatal outcomes related to ESBL-producing microorganisms at a large hospital in Paris, France. In 2012-2013, all consecutive patients with clinical samples testing positive for ESBL-producing Enterobacteriaceae at Saint-Antoine Hospital were identified...
February 8, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28177854/risk-factors-for-30-day-hospital-re-admission-with-an-infectious-complication-after-lower-extremity-vascular-procedures
#14
Joseph C Melvin, Jamie B Smith, Robin L Kruse, Todd R Vogel
BACKGROUND: Lowering the 30-d re-admission rate after vascular surgery offers the potential to improve healthcare quality. This study evaluated re-admission associated with infections after open and endovascular lower extremity (LE) procedures for peripheral artery disease (PAD). METHODS: Patients admitted for elective LE procedures for PAD were selected from the Cerner Health Facts(®) database. Chi-square analysis evaluated the characteristics of the index admission associated with infection at 30-d re-admission...
February 8, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28167588/prevalence-of-staphylococcus-aureus-nasal-carriage-in-human-immunodeficiency-virus-infected-and-uninfected-children-in-botswana-prevalence-and-risk-factors
#15
Michael J A Reid, Rebecca S B Fischer, Naledi Mannathoko, Charles Muthoga, Erin McHugh, Heather Essigmann, Eric L Brown, Andrew P Steenhoff
Staphylococcus aureus is an important cause of morbidity and mortality in children in sub-Saharan Africa (SSA). A major risk factor for staphylococcal infection is S. aureus colonization of the anterior nares. We sought to define risk factors for S. aureus carriage and characterize antimicrobial resistance patterns in children in Botswana. A cross-sectional study was conducted at two clinical sites in southern Botswana. Patients under 18 years of age underwent two nasal swabs and brief interviews, 4 weeks apart...
February 6, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28159744/effectiveness-of-fundoplication-or-gastrojejunal-feeding-in-children-with-neurologic-impairment
#16
Bryan Stone, Gabrielle Hester, Daniel Jackson, Troy Richardson, Matt Hall, Ramkiran Gouripeddi, Ryan Butcher, Ron Keren, Rajendu Srivastava
BACKGROUND AND OBJECTIVES: Gastroesophageal reflux (GER), aspiration, and secondary complications lead to morbidity and mortality in children with neurologic impairment (NI), dysphagia, and gastrostomy feeding. Fundoplication and gastrojejunal (GJ) feeding can reduce risk. We compared GJ to fundoplication using first-year postprocedure reflux-related hospitalization (RRH) rates. METHODS: We identified children with NI, dysphagia requiring gastrostomy tube feeding and GER undergoing initial GJ placement or fundoplication from January 1, 2007 to December 31, 2012...
February 3, 2017: Hospital Pediatrics
https://www.readbyqxmd.com/read/28159177/microbiology-and-epidemiology-of-legionnaire-s-disease
#17
REVIEW
Almudena Burillo, María Luisa Pedro-Botet, Emilio Bouza
Legionnaire's disease (LD) is the pneumonic form of legionellosis caused by aerobic gram-negative bacilli of the genus Legionella. Individuals become infected when they inhale aerosolized water droplets contaminated with Legionella species. Forty years after the identification of Legionella pneumophila as the cause of the 1976 pneumonia outbreak in a hotel in Philadelphia, we have non-culture-based diagnostic tests, effective antibiotics, and preventive measures to handle LD. With a mortality rate still around 10%, underreporting, and sporadic outbreaks, there is still much work to be done...
March 2017: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/28153582/changing-trends-in-antimicrobial-susceptibility-pattern-of-bacterial-isolates-in-a-burn-unit
#18
Narendra Pal Singh, Mayuri Rani, Kavita Gupta, Tanu Sagar, Iqbal Rajinder Kaur
INTRODUCTION: Emerging antimicrobial resistance in nosocomial bacterial isolates, limits the available treatment options for burn wound infections, among them multi-drug resistant Gram negative bacteria and methicillin-resistant Staphylococcus aureus (MRSA) are major contributors to the increase in morbidity and mortality rates. MATERIAL AND METHODS: A retrospective cross-sectional study was done in the Department of Microbiology, University College of Medical Sciences & Guru Teg Bahadur Hospital, Delhi...
January 30, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28149579/endobronchial-tuberculosis-a-review
#19
REVIEW
Talha Shahzad, Muhammad Irfan
Endobronchial tuberculosis (EBTB) is a tuberculous infection of the tracheobronchial tree with microbial and histopathological evidence. Patients may present with symptoms secondary to disease itself or from the complication of disease like endobronchial obstruction. Diagnosis requires a high index of suspicion. Computed tomography (CT) and bronchoscopy along with microbiological investigations are the most useful diagnostic tools for the confirmation as well as for the evaluation of the tracheobronchial stenosis...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28149576/duration-of-antibiotic-therapy-in-the-intensive-care-unit
#20
REVIEW
Gabor Zilahi, Mary Aisling McMahon, Pedro Povoa, Ignacio Martin-Loeches
There are certain well defined clinical situations where prolonged therapy is beneficial, but prolonged duration of antibiotic therapy is associated with increased resistance, medicalising effects, high costs and adverse drug reactions. The best way to decrease antibiotic duration is both to stop antibiotics when not needed (sterile invasive cultures with clinical improvement), not to start antibiotics when not indicated (treating colonization) and keep the antibiotic course as short as possible. The optimal duration of antimicrobial treatment for ventilator-associated pneumonia (VAP) is unknown, however, there is a growing evidence that reduction in the length of antibiotic courses to 7-8 days can minimize the consequences of antibiotic overuse in critical care, including antibiotic resistance, adverse effects, collateral damage and costs...
December 2016: Journal of Thoracic Disease
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