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infectious endocarditis

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https://www.readbyqxmd.com/read/28335676/physiopathological-approach-to-infective-endocarditis-in-chronic-hemodialysis-patients-left-heart-versus-right-heart-involvement
#1
Yassamine Bentata
Infectious endocarditis (IE), a complication that is both cardiac and infectious, occurs frequently and is associated with a heavy burden of morbidity and mortality in chronic hemodialysis patients (CHD). About 2-6% of chronic hemodialysis patients develop IE and the incidence is 50-60 times higher among CHD patients than in the general population. The left heart is the most frequent location of IE in CHD and the different published series report a prevalence of left valve involvement varying from 80% to 100%...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28329330/three-port-one-incision-plus-two-port-endoscopic-mitral-valve-surgery-without-robotic-assistance%C3%A2
#2
Toshiaki Ito, Atsuo Maekawa, Satoshi Hoshino, Yasunari Hayashi, Sadanari Sawaki, Junji Yanagisawa, Masayoshi Tokoro
OBJECTIVES: Totally endoscopic minimally invasive mitral valve surgery (MIMVS) is technically demanding and often performed with robotic assistance. We hypothesized that three-port video-assisted thoracic surgery (VATS) would facilitate endoscopic MIMVS and evaluated its feasibility and safety. METHODS: From October 2010 to June 2016, we performed first-time MIMVS in 250 consecutive patients (122 male), with median age of 65 years (54-73 years, 25-75 percentile)...
March 17, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28325766/staphylococcal-%C3%AE-toxin-modulates-human-aortic-endothelial-cell-and-platelet-function-through-sphingomyelinase-and-biofilm-ligase-activities
#3
Alfa Herrera, Katarina Kulhankova, Vijay K Sonkar, Sanjana Dayal, Aloysius J Klingelhutz, Wilmara Salgado-Pabón, Patrick M Schlievert
Staphylococcus aureus causes many infections, such as skin and soft tissue, pneumonia, osteomyelitis, and infective endocarditis (IE). IE is an endovascular infection of native and prosthetic valves and the lining of the heart; it is characterized by the formation of cauliflower-like "vegetations" composed of fibrin, platelets, other host factors, bacteria, and bacterial products. β-Toxin is an S. aureus virulence factor that contributes to the microorganism's ability to cause IE. This cytolysin has two enzymatic activities: sphingomyelinase (SMase) and biofilm ligase...
March 21, 2017: MBio
https://www.readbyqxmd.com/read/28290975/death-of-military-working-dogs-due-to-bartonella-vinsonii-subspecies-berkhoffii-genotype-iii-endocarditis-and-myocarditis
#4
Leslie M Shelnutt, Nandhakumar Balakrishnan, Justin DeVanna, Kenneth L Batey, Edward B Breitschwerdt
OBJECTIVES: As a result of extensive field-related activities, military working dogs (MWDs) have an increased occupational risk for acquiring vector-borne infectious diseases. METHODS: Indirect fluorescent antibody, Bartonella alpha-proteobacteria growth medium enrichment culture, and 16-23S Bartonella intergenic transcribed spacer polymerase chain reaction were performed using blood, serum, or tissue specimens. RESULTS: Endocarditis was diagnosed in three MWDs infected with Bartonella vinsonii subspecies (subsp...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28283187/successful-delayed-coiling-of-a-ruptured-growing-distal-posterior-cerebral-artery-mycotic-aneurysm
#5
C Champeaux, N Walker, J Derwin, A Grivas
Intracranial infectious aneurysm (IIA) is a rare form of cerebrovascular malformation for which obliteration may be undertaken after rupture or non-response to targeted antibiotic therapy. We discuss the case of a 19-year-old man who presented with acute neurologic decline (Glasgow Coma Scale of 8) and endocarditis. CT images demonstrated subarachnoid haemorrhage, hydrocephalus and a mycotic aneurysm on the left posterior cerebral artery. Conservative management was initially decided due to the high risk of stroke and hemianopia...
March 7, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28279491/proposal-for-shorter-antibiotic-therapies
#6
C Wintenberger, B Guery, E Bonnet, B Castan, R Cohen, S Diamantis, P Lesprit, L Maulin, Y Péan, E Peju, L Piroth, J P Stahl, C Strady, E Varon, F Vuotto, R Gauzit
OBJECTIVES: Reducing antibiotic consumption has now become a major public health priority. Reducing treatment duration is one of the means to achieve this objective. Guidelines on the therapeutic management of the most frequent infections recommend ranges of treatment duration in the ratio of one to two. The Recommendation Group of the French Infectious Diseases Society (SPILF) was asked to collect literature data to then recommend the shortest treatment durations possible for various infections...
March 6, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28264856/effect-of-continuous-and-sequential-therapy-among-veterans-receiving-daptomycin-or-linezolid-for-vancomycin-resistant-enterococcus-faecium-bacteremia
#7
Nicholas S Britt, Emily M Potter, Nimish Patel, Molly E Steed
Vancomycin-resistant Enterococcus faecium bloodstream infections (VREF-BSI) cause significant mortality, highlighting the need to optimize treatment. We compared the effectiveness and safety of daptomycin (DAP) and linezolid (LZD) as continuous or sequential therapy for VREF-BSI in a national, retrospective, propensity score (PS) matched cohort study of hospitalized Veterans Affairs patients (2004-2014). We compared clinical outcomes and adverse events among patients treated with continuous LZD, continuous DAP, or sequential LZD followed by DAP (LZD-DAP)...
March 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28259839/fatal-fungal-endocarditis-by-aspergillus-udagawae-an-emerging-cause-of-invasive-aspergillosis
#8
Atsuko Seki, Atsushi Yoshida, Yoko Matsuda, Mitsuhiro Kawata, Takashi Nishimura, Jun Tanaka, Yoshiki Misawa, Yuta Nakano, Ryoko Asami, Koji Chida, Ken Kikuchi, Tomio Arai
Aspergillus udagawae has morphological similarities to Aspergillusfumigatus; however, it shows a low susceptibility to common antifungal drugs and poor in vitro sporulation. We present the first reported case of infectious endocarditis caused by A. udagawae. An awareness of this newly described Aspergillus species is vital for further clarification.
February 8, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28253945/-pyogenic-spinal-infections-in-adults-a-5-year-experience-from-a-tertiary-care-centre
#9
O Džupová, R Cihlářová
PURPOSE OF THE STUDY To describe epidemiological and clinical features of pyogenic spinal infections in patients treated at the Department of Infectious, Parasitic and Tropical Diseases of the Hospital Na Bulovce in 2010-2014, and to analyse a predictive significance of selected variables. MATERIAL AND METHODS A single-centre retrospective cohort study carried out from 1.1.2010 to 31.12.2014 enrolled adult patients with septic spondylitis, discitis and facet joint infections. Recorded parameters included: demographics, chronic comorbidities, time to diagnosis, radiological work-up, anatomical level of spinal infection, source of infection, etiological agent, complications, treatment and outcomes...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28250859/-18-f-fdg-pet-ct-for-the-diagnosis-of-malignant-and-infectious-complications-after-solid-organ-transplantation
#10
Nastassja Muller, Romain Kessler, Sophie Caillard, Eric Epailly, Fabrice Hubelé, Céline Heimburger, Izzie-Jacques Namer, Raoul Herbrecht, Cyrille Blondet, Alessio Imperiale
PURPOSE: Infection and malignancy represent two common complications after solid organ transplantation, which are often characterized by poorly specific clinical symptomatology. Herein, we have evaluated the role of (18)F-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography/computed tomography (PET/CT) in this clinical setting. METHODS: Fifty-eight consecutive patients who underwent FDG PET/CT after kidney, lung or heart transplantation were included in this retrospective analysis...
March 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28246364/elevated-cholesterol-in-the-coxiella-burnetii-intracellular-niche-is-bacteriolytic
#11
Minal Mulye, Dhritiman Samanta, Seth Winfree, Robert A Heinzen, Stacey D Gilk
Coxiella burnetii is an intracellular bacterial pathogen and a significant cause of culture-negative endocarditis in the United States. Upon infection, the nascent Coxiella phagosome fuses with the host endocytic pathway to form a large lysosome-like vacuole called the parasitophorous vacuole (PV). The PV membrane is rich in sterols, and drugs perturbing host cell cholesterol homeostasis inhibit PV formation and bacterial growth. Using cholesterol supplementation of a cholesterol-free cell model system, we found smaller PVs and reduced Coxiella growth as cellular cholesterol concentration increased...
February 28, 2017: MBio
https://www.readbyqxmd.com/read/28223392/streptococcus-mitis-and-s-oralis-lack-a-requirement-for-cdsa-the-enzyme-required-for-synthesis-of-major-membrane-phospholipids-in-bacteria
#12
Hannah M Adams, Luke R Joyce, Ziqiang Guan, Ronda L Akins, Kelli L Palmer
Synthesis and integrity of the cytoplasmic membrane is fundamental to cellular life. Experimental evolution studies have hinted at unique physiology in the Gram-positive bacteria Streptococcus mitis and S. oralis These organisms commonly cause bacteremia and infectious endocarditis (IE) but are rarely investigated in mechanistic studies of physiology and evolution. Unlike other Gram-positive pathogens, high-level (MIC ≥ 256 μg/mL) daptomycin resistance rapidly emerges in S. mitis and S. oralis after a single drug exposure...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28209306/successful-coil-embolization-of-a-ruptured-mycotic-aneurysm-that-developed-three-days-after-septic-embolic-infarction-case-report-and-review-of-the-literature
#13
Joshua L Wang, Archana P Hinduja, Ciarán J Powers
BACKGROUND: Infectious intracranial aneurysms (IIAs) are rare entities and are often associated with septic embolus from infectious endocarditis. They may develop rapidly and carry a higher risk of rupture and mortality compared to noninfectious aneurysms. However, the development and rupture of an IIA within 48h in a patient with septic infarction patient is exceedingly rare. CASE DESCRIPTION: In this report, we describe a 25-year-old male who presented with left-sided hemiparesis and dysarthria from septic embolus to the right middle cerebral artery...
February 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28152067/characteristics-of-staphylococcus-aureus-bacteraemia-and-predictors-of-early-and-late-mortality
#14
Matteo Bassetti, Maddalena Peghin, Enrico Maria Trecarichi, Alessia Carnelutti, Elda Righi, Paola Del Giacomo, Filippo Ansaldi, Cecilia Trucchi, Cristiano Alicino, Roberto Cauda, Assunta Sartor, Teresa Spanu, Claudio Scarparo, Mario Tumbarello
We aimed to describe the characteristics of patients with Staphylococcus aureus bacteremia and to evaluate the risk factors associated with early (7-day) and late (30-day) mortality. We performed an observational study including all consecutive episodes of Staphylococcus aureus bacteremia diagnosed at two Italian university hospitals during 2010-2014. A total of 337 patients were included. Mean age was 69 years (range, 57-78) and 65% were males. Methicillin-resistant S. aureus (MRSA) was identified in 132/337 (39%)cases...
2017: PloS One
https://www.readbyqxmd.com/read/28149700/retrospective-study-of-prognostic-factors-in-pediatric-invasive-pneumococcal-disease
#15
Nan-Chang Chiu, Hsin Chi, Chun-Chih Peng, Hung-Yang Chang, Daniel Tsung-Ning Huang, Lung Chang, Wei-Te Lei, Chien-Yu Lin
Streptococcus pneumoniae remains the leading causative pathogen in pediatric pneumonia and bacteremia throughout the world. The invasive pneumococcal disease (IPD) is known as isolation of S. pneumoniae from a normally sterile site (e.g., blood, cerebrospinal fluid, synovial fluid, pericardial fluid, pleural fluid, or peritoneal fluid). The aim of this study is to survey the clinical manifestations and laboratory results of IPD and identify the prognostic factors of mortality. From January 2001 to December 2006, a retrospective review of chart was performed in a teaching hospital in Taipei...
2017: PeerJ
https://www.readbyqxmd.com/read/28145876/novel-use-of-mitraclip-for-severe-mitral-regurgitation-due-to-infective-endocarditis
#16
Pranav Chandrashekar, Erin A Fender, Mohammed A Al-Hijji, Krishnaswamy Chandrasekaran, Charanjit S Rihal, Mackram F Eleid, Nandan S Anavekar
A 75-year-old man presented with infective endocarditis. Transesophageal echocardiogram (TEE) revealed mild-moderate mitral regurgitation (MR). After 4 weeks of antibiotics, he presented with New York Heart Association class III dyspnea. Repeat TEE demonstrated severe MR. After consultation with Infectious Diseases, it was determined the infection risk was low and transcatheter mitral valve repair (TMVR) was offered. Deployment of two MitraClip devices (Abbott Vascular) resulted in symptom relief. This case demonstrates a potential role of TMVR in treating acute severe MR due to endocarditis...
February 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28109380/autotransplantation-for-threatened-cardiac-rupture-after-left-ventricular-repair
#17
Hiroaki Hata, Motomi Shiono, Mitsuru Iida, Akira Sezai, Shunji Osaka, Masashi Tanaka
A 26-year-old Japanese woman experienced threatened cardiac rupture after mitral valve replacement and debridement of a left ventricular (LV) posterior wall abscess caused by infectious endocarditis. We performed cardiac autotransplantation using the bicaval technique to allow bench repair of the recurrent abscess. A balloon catheter was inflated in the inferior vena cava to obtain a bloodless anastomotic field. This is the first report of autotransplantation for threatened LV rupture after posterior wall repair...
February 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28106022/complicated-left-sided-infective-endocarditis-in-chronic-hemodialysis-patients-a-case-report
#18
Öykü Gülmez, Mehtap Aydın
Infective endocarditis (IE) is a serious infectious condition with high morbidity and mortality in patients with end-stage renal disease (ESRD). It has been particularly associated with recurrent bacteremia due to vascular access via lumen catheters. The most common pathogen is Staphylococcus (S.) aureus, and most affected valve is mitral valve, which frequently calcified. Two patients with ESRD who received hemodialysis treatment via tunneled catheters, aged 56 and 88 years, were admitted with fever and high troponin level...
January 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28099093/patients-with-infectious-endocarditis-and-drug-dependence-have-worse-clinical-outcomes-after-valvular-surgery
#19
Anthony Lemaire, Viktor Dombrovskiy, Siavash Saadat, George Batsides, Aziz Ghaly, Alan Spotnitz, Leonard Y Lee
BACKGROUND: Patients with infective endocarditis (IE) are at high risk for post-operative morbidity and death, which might be associated with drug abuse. The purpose of this study is to evaluate the impact of drug dependence on outcomes in patients who have IE and undergo valvular surgery (VS). PATIENTS AND METHODS: The Nationwide/National Inpatient Sample 2001-2012 was queried to select patients with IE who had elective VS using International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis and procedure codes...
January 18, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28079630/18f-fluorodeoxyglucose-positron-emission-tomography-and-infectious-diseases-current-applications-and-future-perspectives
#20
Matteo Bassetti, Alessia Carnelutti, Daniele Muser, Elda Righi, Nicola Petrosillo, Fernando Di Gregorio, Thomas J Werner, Abass Alavi
PURPOSE OF REVIEW: 18F-Fluorodeoxyglucose positron emission tomography/computed tomography is a well-established technique for diagnosis and management of a number of neoplastic conditions. However, in recent years the body of literature regarding its potential role in infectious diseases has progressively increased, with promising results. RECENT FINDINGS: So far 18F-fluorodeoxyglucose positron emission tomography/computed tomography has a well-established role and is recommended by guidelines only in a few settings, such as prosthetic valve endocarditis, vascular device infections, and chronic osteomyelitis...
January 12, 2017: Current Opinion in Infectious Diseases
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