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Microbiology of pneumonia

Li Liu, Wanjun Chen, Xiaoye Lu, Keji Zhang, Changqing Zhu
BACKGROUND: Pyogenic liver abscesses have become common in emergency departments (EDs) in recent years in Shanghai, China due to a variety of risk factors contributory to the disease. OBJECTIVE: To review our experience in managing pyogenic liver abscesses to aid in the current management of this complex condition. METHODS: This retrospective study was conducted to collect and analyze information from adult patients diagnosed with liver hepatic abscesses who were admitted to Ren Ji Hospital during the period from January 1, 2010 to December 31, 2015...
October 17, 2016: Journal of Emergency Medicine
Sebastien Breurec, Coralie Bouchiat, Jean-Marie Sire, Olivier Moquet, Raymond Bercion, Moussa Fafa Cisse, Philippe Glaser, Ousmane Ndiaye, Sidy Ka, Helene Salord, Abdoulaye Seck, Haby Signate Sy, Remy Michel, Benoit Garin
BACKGROUND: Neonatal infection constitutes one of Senegal's most important public health problems, with a mortality rate of 41 deaths per 1,000 live births. METHODS: Between January 2007 and March 2008, 242 neonates with suspected infection were recruited at three neonatal intensive care units in three major tertiary care centers in Dakar, the capital of Senegal. Neonatal infections were confirmed by positive bacterial blood or cerebrospinal fluid culture. The microbiological pattern of neonatal infections and the antibiotic susceptibility of the isolates were characterized...
October 20, 2016: BMC Infectious Diseases
Erin E Shaughnessy, Erika L Stalets, Samir S Shah
PURPOSE OF REVIEW: This review covers the outpatient management of pediatric community-acquired pneumonia (CAP), discussing the changing microbiology of CAP since the introduction of the 13-valent pneumococcal conjugate vaccine in 2010, and providing an overview of national guideline recommendations for diagnostic evaluation and treatment. RECENT FINDINGS: Rates of invasive pneumococcal disease and pneumococcal antibiotic resistance have plummeted since widespread 13-valent pneumococcal conjugate vaccine immunization...
October 15, 2016: Current Opinion in Pediatrics
Taner Daş, Aytül Sargan, Gülhan Yağmur, Muzaffer Yildirim, Cumhur Selçuk Topal, Ahmet Selçuk Gürler, Hizir Asliyüksek, Murat Nihat Arslan, Rifat Özdemirel
Lower respiratory infections are commonly due to viruses and are the third largest cause of death. Respiratory tract viruses have a tendency to target the specific regions in the lung and can harm the host via direct effect of the virus and the host's inflammatory response. In this study, relationships between morphologic changes in the lung and the viral agent type isolated in the lung by the polymerase chain reaction technique were investigated. This study was performed retrospectively at 113 autopsy cases in the Council of Forensic Medicine in Istanbul...
October 7, 2016: American Journal of Forensic Medicine and Pathology
B A McGrath, S Ruane, J McKenna, S Thomas
Disposable bronchoscopes such as the Ambu aScope(TM) 3 are marketed as 'single use' The risks of contamination from prolonged device storage before possible re-use are unknown. Following clinical bronchoscopy in patients whose lungs were mechanically ventilated, 20 aScope(TM) 3's bronchoscopes received a standard 'social clean' and were then stored. Subsequent paired saline flush and swab samples were taken at time zero, and at 24 h and 48 h. Positive microbiological cultures were obtained from at least one time point from 16 of the 20 bronchoscopes...
October 17, 2016: Anaesthesia
Tiemei Zhao, Liang-An Chen, Ping Wang, Guizhen Tian, Feng Ye, Huili Zhu, Bei He, Baiying Zhang, Changzhou Shao, Zhijun Jie, Xiwen Gao, Dongxia Wang, Weidong Song, Zhijie Pan, Jin Chen, Xingyi Zhang, Zhancheng Gao, Ping Chen, Youning Liu
BACKGROUND: To compare 5-day regimen of levofloxacin 750 mg IV daily with 7-14-day conventional regimen of levofloxacin 500 mg intravenous to oral (IV/PO) daily for treatment of community-acquired pneumonia (CAP) in Chinese population. METHODS: This was a non-inferiority study to assess the difference of clinical efficacy at the end of treatment (EOT) between two regimens. Adult CAP patients with CURB-65 score 0-2 were enrolled from 17 hospitals in China from November 2012 to July 2014...
September 2016: Journal of Thoracic Disease
G J Roode, K-W Bütow, S Naidoo
To identify the pathogenic micro-organisms that had colonised preoperatively in clefts in the soft palate and oro-nasopharynx, we retrospectively studied the preoperative microbiological profiles of 200 infants who had had primary repair of all types of cleft in the soft palate. Data from a private practice that specialises in the repair of facial clefts were extracted randomly from patients' files. We analysed the results of the culture of preoperative swabs taken from clefts in the soft palate and oro-nasopharynx, and the resistance profile of organisms towards various antibiotics...
October 10, 2016: British Journal of Oral & Maxillofacial Surgery
Emilio Bouza, José Martínez-Alarcón, Emilio Maseda, Mercedes Palomar, Rafael Zaragoza, María Jesús Pérez-Granda, Patricia Muñoz, Almudena Burillo
INTRODUCTION: Current guidelines for the microbiological diagnosis of ventilator-associated pneumonia (VAP) are imprecise. Based on data provided by intensive care specialists (ICS) and microbiologists, this study defines the clinical practices and microbiological techniques currently used for an aetiological diagnosis of VAP and pinpoints deficiencies. METHODS: Eighty hospitals in the national health network with intensive care and microbiology departments were sent two questionnaires, one for each department, in order to collect data on VAP diagnosis for the previous year...
October 13, 2016: Enfermedades Infecciosas y Microbiología Clínica
Tobias Svensson, Kristina Lamberg Lundström, Martin Höglund, Honar Cherif
BACKGROUND: Patients treated for hematological malignancies have an increased risk of serious infections. Diagnosis and prompt initiation of therapy are essential. Bronchoalveolar lavage (BAL) is a well-established investigation for identifying the cause of pulmonary infiltrates in immunocompromised patients. The aim of the study was to determine the diagnostic yield of BAL in patients treated for hematological malignancies and how often it contributed to a modification of the anti-infectious therapy...
October 14, 2016: Upsala Journal of Medical Sciences
Shaun K Morris, Lisa G Pell, Mohammed Ziaur Rahman, Michelle C Dimitris, Abdullah Mahmud, M Munirul Islam, Tahmeed Ahmed, Eleanor Pullenayegum, Tahmid Kashem, Shaila S Shanta, Jonathan Gubbay, Eszter Papp, Michelle Science, Stanley Zlotkin, Daniel E Roth
BACKGROUND: Early infancy is a high-risk period for severe acute respiratory infection (ARI), particularly in low-income countries with resource-limited health systems. Lower respiratory tract infection (LRTI) is commonly preceded by upper respiratory infection (URTI), and often caused by respiratory syncytial virus (RSV), influenza and other common community-acquired viral pathogens. Vitamin D status is a candidate modifiable early-life determinant of the host antiviral immune response and thus may influence the risk of ARI-associated morbidity in high-risk populations...
October 13, 2016: BMC Pregnancy and Childbirth
Haiying Sun, Lillian Ting, Surendra Machineni, Jens Praestgaard, Andreas Kuemmell, Daniel S Stein, Gangadhar Sunkara, Steven J Kovacs, Stephen Villano, S Ken Tanaka
Omadacycline is a first in class aminomethylcycline antibiotic with microbiological activity against Gram-positive and Gram-negative aerobes and anaerobes, and atypical bacteria that is being developed for the treatment of acute bacterial skin and skin structure infections (ABSSSI) and community-acquired bacterial pneumonia (CABP). The bioavailability of a Phase 3 tablet formulation relative to intravenous (IV) administration (and of other oral formulations relative to the Phase 3 tablet) was investigated in an open-label, randomized, four-period, crossover study in healthy subjects age 18-50 years...
October 10, 2016: Antimicrobial Agents and Chemotherapy
Başak Yıldız-Atıkan, Bülent Karapınar, Şöhret Aydemir, Fadıl Vardar
Ventilator-associated pneumonia (VAP) is defined as pneumonia occuring in any period of mechanical ventilation. There is no optimal diagnostic method in current use and in this study we aimed to compare two non-invasive diagnostic methods used in diagnosis of VAP in children. This prospective study was conducted in 8 bedded Pediatric Intensive Care Unit at Ege University Children´s Hospital. Endotracheal aspiration (ETA) and non-bronchoscopic bronchoalveolar lavage (BAL) were performed in case of developing VIP after 48 hours of ventilation...
November 2015: Turkish Journal of Pediatrics
Rajeev Soman, Neha Gupta, Mitesh Suthar, Jatin Kothari, Alan Almeida, Anjali Shetty, Camilla Rodrigues
BACKGROUND: Central-line-associated blood-stream infection (CLABSI) is a highly consequential nosocomial infection. The most effective management includes the removal of the infected catheter. Retention of the catheter and antibiotic lock therapy (ALT) along with systemic antibiotics may be attempted only if there are unusual extenuating circumstances. CLABSIs due to Gram-negative bacteria (GNB) is more common in our setting and the organisms are often highly resistant. Hence, there is a need to explore the use of novel antimicrobials for catheter lock solutions along with antibiofilm agents...
February 2016: Journal of the Association of Physicians of India
Xavier Chaufour, Julien Gaudric, Yann Goueffic, Réda Hassen Khodja, Patrick Feugier, Sergei Malikov, Guillaume Beraud, Jean-Baptiste Ricco
OBJECTIVE: Endovascular aneurysm repair (EVAR) is widely used with excellent results, but its infectious complications can be devastating. In this paper, we report a multicenter experience with infected EVAR, symptoms, and options for explantation and their outcome. METHODS: We have reviewed all consecutive endograft explants for infection at 11 French university centers following EVAR, defined as index EVAR, from 1998 to 2015. Diagnosis of infected aortic endograft was made on the basis of clinical findings, cultures, imaging studies, and intraoperative findings...
October 5, 2016: Journal of Vascular Surgery
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
Jennifer I Smart, Gordon Ralph Corey, Martin E Stryjewski, Whedy Wang, Steven L Barriere
INTRODUCTION: The broth microdilution method (BMD) for testing telavancin minimum inhibitory concentrations (MICs) was revised (rBMD) in 2014 to improve the accuracy, precision, and reproducibility of the testing method. The aim of this study was to determine the effect of the revised method on telavancin MIC values for Staphylococcus aureus (S. aureus) clinical isolates obtained from hospital-acquired pneumonia (HAP) patients. METHODS: Isolates from patients who participated in the phase 3 Assessment of Telavancin for Treatment of HAP Studies were retested using the rBMD method...
October 7, 2016: Infectious Diseases and Therapy
Karolina Stojowska-Swędrzyńska, Beata Krawczyk
Klebsiella oxytoca is the second most frequently identified species of Klebsiella isolated from hospitalized patients. Klebsiella spp. is difficult to identify using conventional methods and is often misclassified in clinical microbiology laboratories. K. oxytoca is responsible for an increasing number of multi-resistant infections in hospitals because of insufficient detection and identification. In this study, we propose a new simple method called pehX-LM PCR/XbaI, which simultaneously indicates K. oxytoca species and genotype by the fingerprint pattern...
October 8, 2016: Applied Microbiology and Biotechnology
Ö Ergönül, M Aydin, A Azap, S Başaran, S Tekin, Ş Kaya, S Gülsün, G Yörük, E Kurşun, A Yeşilkaya, F Şimşek, E Yılmaz, H Bilgin, Ç Hatipoğlu, H Cabadak, Y Tezer, T Togan, I Karaoğlan, A İnan, A Engin, H E Alışkan, S Ş Yavuz, Ş Erdinç, L Mulazimoglu, Ö Azap, F Can, H Akalın, F Timurkaynak
This article describes the prevalence of antibiotic resistance and predictors of mortality for healthcare-associated (HA) Gram-negative bloodstream infections (GN-BSI). In total, 831 cases of HA GN-BSI from 17 intensive care units in different centres in Turkey were included; the all-cause mortality rate was 44%. Carbapenem resistance in Klebsiella pneumoniae was 38%, and the colistin resistance rate was 6%. Multi-variate analysis showed that age >70 years [odds ratio (OR) 2, 95% confidence interval (CI) 1...
August 21, 2016: Journal of Hospital Infection
Benjamin W Teh, Simon J Harrison, Monica A Slavin, Leon J Worth
BACKGROUND: Bloodstream infections (BSIs) are a significant complication of treatment for multiple myeloma (MM). The objective of this study was to define the epidemiology of BSI with current era MM treatment regimens, including immunomodulatory drugs, proteasome inhibitors and autologous haematopoietic stem cell transplantation (ASCT). METHODS: Clinical and microbiology records of patients with MM diagnosed between 2008 and 2012 were reviewed using a standardised tool to capture patient demographics, myeloma characteristics and BSI characteristics (type, severity, outcomes)...
September 26, 2016: European Journal of Haematology
Myra W Popejoy, David L Paterson, Daniel Cloutier, Jennifer A Huntington, Benjamin Miller, Caleb A Bliss, Judith N Steenbergen, Ellie Hershberger, Obiamiwe Umeh, Keith S Kaye
OBJECTIVES: The increase in infections caused by drug-resistant ESBL-producing Enterobacteriaceae (ESBL-ENT) is a global concern. The characteristics and outcomes of patients infected with ESBL-ENT were examined in a pooled analysis of Phase 3 clinical trials of ceftolozane/tazobactam in patients with complicated urinary tract infections (ASPECT-cUTI) and complicated intra-abdominal infections (ASPECT-cIAI). METHODS: Trials were randomized and double blind. The ASPECT-cUTI regimen was 7 days of either intravenous ceftolozane/tazobactam (1...
October 5, 2016: Journal of Antimicrobial Chemotherapy
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