Active clinical trials for "Endocarditis"

Mycobacterium chimaera infections have occurred in post-cardiac surgery patients in association with contaminated cardiac bypass heater-cooler devices. So far optimal therapeutical concepts are not clear. At the University Hospital Basel Mycobacterium chimaera- infected protheses are replaced to decrease pathogenic burden and to support antibiotic long- term treatment. This study is to analyze the efficacy of this therapeutic approach.

Infective endocarditis is a deadly disease with a mortality rate between 20 and 40%. Antibiotic therapy is of utmost importance. It is primarily guided by microbial results from positive blood culture. However, culture-based microbiological diagnostic can identify the species, but not the strain or the genotypic characteristics of a pathogen. Identifying the strain can be of utmost clinical significance. S. aureus is the most common causative organism of IE worldwide (16%-32%). This pathogen causes massive valve destruction and abscesses, which is strongly dependent on the expression of virulence factors that vary between different S. aureus strains. Functional characterization of S. aureus and determination of virulence factors can currently be achieved through cell culture-based assays (CCBA). However, these tests are very time consuming and cannot be performed as routine clinical diagnostics. Next Generation Sequencing (NSG) has the potential to identify the genotypic characteristics of the pathogen, which is important to determine its virulent potential. The aim of this study is to evaluate the possible utilization of NGS in the prediction of virulence factors of S. aureus and to compare it to the virulence factors determined using CCBA. Hopefully, by comparing the NGS and CCBA, the investigators will get a faster way of determining the possible virulence factors. The NGS method can be further utilized to describe the prevalence of different strains of bacteria in infected valve tissue and blood culture samples. The collected data will serve as a basis for further evaluation of the potentials of NGS-based Diagnosis of IE, as well as a comparison between NGS-guided antibiotic treatment and the standard of care antibiotic treatment.

Before Daptomycin (Cubicin ®) approved by the U.S. FDA in 2003, There were large-scale clinical trials conducted that included more than 1,000 subjects and than Daptomycin got complicated skin and soft tissue infections (CSSSI) indication. After 2004, Daptomycin got new indications about bacteremia and endocarditis due to success outcomes in the clinical trial which included infected in blood flow and endocardial infected patients. All subjects in Daptomycin clinical trials are European and American race. It is necessary that collecting safety and efficacy data of Daptomycin in Taiwan race. I will intent to evaluate the safety and efficacy of Daptomycin which were used in patients with serious gram-positive infections retrospectively. And the outcome could be a reference for Daptomycin future using.

The recommended length of antibiotic treatment to patients with infective endocarditis is 4-6 weeks. All patients receive the same dosis except for those with renal impairment who receive a smaller dose. For Beta-lactam antibiotics, a plasma concentration above the minimal inhibitory concentration (MIC) for at least 50% of the time in a dosing interval maximize bactericidal activity. To estimate the time for which the antibiotic concentration is above the MIC (T>MIC) and to see if there might be a relationship between the concentration of antibiotics and possible side-effects, toxicity and treatment failure, all patients admitted with infective endocarditis will be followed and have two blood tests withdrawn once a week during antibiotic treatment, an expected average of 5 weeks.

This is an analysis of the outcomes of patients having undergone surgical intervention for infective endocarditis.

This is an open-label, expanded access study of exebacase used in addition to antistaphylococcal antibiotics in adult patients with persistent methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infections (BSI), including right-sided endocarditis (R-IE), who are hospitalized with coronavirus disease 2019 (COVID-19). Patients with left-sided endocarditis (L-IE) are excluded. Patients will receive a single dose of exebacase. Patients will continue to receive antistaphylococcal antibiotics as prescribed by the treating physician. Exebacase Phase 3 study sites (Study CF-301-105) may participate in this Expanded Access study (Study CF-301-107). Exebacase, a direct lytic agent, is an entirely new treatment modality against S. aureus. Exebacase is a recombinantly-produced, purified cell wall hydrolase enzyme that results in rapid bacteriolysis, potent biofilm eradication, synergy with antibiotics, low propensity for resistance, and the potential to suppress antibiotic resistance when used together with antibiotics. Exebacase represents a first-in-field, first-in-class treatment with the potential to improve clinical outcome when used in addition to standard-of-care antibiotics to treat S. aureus BSI including IE.

Current study evaluates the relationship between cell immunity and lipid transport systems in patients with severe bacterial infections (on the model of pneumonia, infective endocarditis, sepsis) in order to develop new methods for predicting the course and outcome of severe bacterial infections.

Indocarditis is an endogenous infection acquired when organisms entering the blood stream establish on the heart valves, therefore, any bacteremia can potentially result in endocarditis. Infective endocarditis is an uncommon disease that often presents as pyrexia of unknown origin. The mortality rate in endocarditis was very high before the antibiotic era, even now a day, the mortality rate is around 20%(1).A variety of microorganisms can cause IE; staphylococci and streptococci account for the majority of cases. Staphylococcal IE is a common cause of healthcare-associated IE ; streptococcal IE is a common cause of community-acquired IE. Common bacterial pathogens include Staphylococcus aureus , Viridans group streptococci , Enterococcus, Coagulase-negative staphylococci , Streptococcus bovis , other streptococci , gram-negative bacteria, HACEK organisms in this category include a number of fastidious gram-negative bacilli: Haemophilus aphrophilus(subsequently called Aggregatibacter aphrophilus and Aggregatibacter paraphrophilus); Actinobacillus actinomycetemcomitans (subsequently called Aggregatibacter actinomycetemcomitans); Cardiobacterium hominis; Eikenella corrodens; and Kingella kingae , and fungi (1,2). A variable proportion of IE remain blood culture- negative (1-4). Most clinically significant bacteremias are detected within 48 hours; common and fastidious pathogens (such as members of the HACEK group) may be detected within five days of incubation with modern automated blood culture detection systems. The optimal volume of blood for each blood culture in adults is 20 ml. Zoonotic agents, such as Coxiella burnetii, Brucella spp., and Bartonella spp. were frequently detected in North Africa and identified as causes of infective endocarditis (IE) in Egypt (3,4).Blood culture is the most important investigation for diagnosing infective endocarditis andto know the prevalence rate of different bacteria and their antibiotic sensitivity pattern.Positive blood culture is the cornerstone of microbiological diagnosis of IE; three sets of blood cultures detect 96 to 98 percent of bacteremia. At least three sets of blood cultures should be obtained from separate venipuncture sites prior to initiation of antibiotic therapy. Patients with IE typically have continuous bacteremia; therefore, blood cultures may be collected at any time and need not necessarily be obtained at the time of fever or chills. MATERIAL and METHOD A total of 150 blood cultures were received from 50 clinically diagnosed cases of bacterial endocarditis . Blood sample was collected under all aseptic precautions.

PET scanning (positron emission tomography) is a well-established technique used to identify areas of interest within the body. It involves injecting a radioactive tracer which highlights abnormal areas. It has recently been combined with CT (computed tomography) and MRI (magnetic resonance imaging) scanning to more accurately identify abnormalities within the heart. Infective endocarditis (infection of the heart valves or lining of the heart) and device infection (where a pacemaker device or wire becomes infected) are of particular interest in this area. The study makes use of hybrid PET/MR scanning using a designated scanner which enables PET scanning combined with MRI scanning. PET scanning combined with CT scanning will be used instead for patients who aren't able to undergo MRI scanning. This will allow abnormal areas within the heart in these conditions to be characterised, alongside treatment regimens, in a way which hasn't been done before. All participants will undergo PET scanning, where a radioactive tracer is injected into a vein before the scan. The radioactive substance only lasts for a short time, passed out of the body in urine. Patients with infective endocarditis involving their own heart valve will undergo an MRI scan as part of the PET scan. Patients with infective endocarditis involving a metal or prosthetic heart valve and also patients who have pacemaker infections, instead of an MRI, will have a CT scan. The reason for this is that CT is better for looking at metal and prosthetic heart valves and patients with pacemakers can't have MRI scans because the strong magnet in the scanner can affect the pacemaker. The scan will be performed twice; once before treatment and once after treatment has been established. If successful, this imaging method will play a key role in diagnosing, quantifying and monitoring these conditions.

This study aims to achieve the following objectives objective 1 : To review the Investigators' experience of surgical management of infective endocarditis (IE) and analyze the outcomes and associated prognostic factors objective 2 : To provides information on early and late clinical outcomes of patients undergoing surgery for IE objective 3 : To evaluate the impact of perioperative clinical variables and identification of perioperative prognostic factors objective 4 : To determine the indications of surgical intervention and the best time of the surgery