View clinical trials related to Infectious Endocarditis.
Filter by:Infective endocarditis is a complex infection that can be life-threatening. These infections also cause anatomical lesions that can be severe. Their management is complex and involves several disciplines: cardiology, bacteriologists, infectious diseases specialists, radiologists, nuclear medicine specialists, cardiac surgeons, neurologists, pharmacologists, etc. The incidence of Enterococcus faecalis endocarditis is increasing due to the aging of the population and the disappearance of rheumatic fever. The adequate management of these infections is complex and relies on the prolonged administration of high-dose antibiotics, classically the combination of amoxicillin and ceftriaxone. In the context of Streptococcal endocarditis, the impact of increasing the Minimum Inhibitory Concentration (MIC) of amoxicillin on patient mortality has been demonstrated but no study has yet examined the impact of increasing the MIC of amoxicillin on the outcome of patients treated for Enterococcus faecalis infective endocarditis.
Infectious endocarditis (IE) is defined as an infection anywhere on the endocardium, most often localised to the cardiac valves. It is an infection with an increasing incidence and in Denmark with 6-700 new cases annually. Approximately 45% of the patients must undergo cardiac surgery with replacement of infected cardiac valves by prosthetic valves. Recently, the formation of biofilms infections has drawn attention with respect to the effects of hyperbaric re-oxygenation of stricken tissues as anaerobic bacterial metabolism with low levels of activity within the biofilm environment, may be responsible for the development of antimicrobial resistance. Polymorphonuclear leukocytes (PMNs) consume available oxygen in the conversion of oxygen to ROS and in the formation of reactive nitrogen species (RNS) by inducible nitric oxide (iNOS) as PMN's are activated by bacteria. In pre-clinical context the effect of hyperbaric oxygen treatment (HBOT) in re-oxygenating biofilm related infections have been demonstrated in infected lungs with Pseudomonas aeruginosa and staphylococcus aureus endocarditis. Adjunctive HBOT has never been offered to patients with IE. However, HBOT may be associated with reduced compliance and side effects, such as equalisation problems of ears and sinuses and confinement anxiety, and the treatment is organizational challenging. On this basis the investigators suggest an initial feasibility study as the basis for a later and larger scaled randomized controlled trial of HBOT in patients with IE.
Existing guidelines recommend a duration of antibiotic treatment of endocarditis of 4-6 weeks with one or two types of intravenously administered antibiotics. The long hospitalization increases several risks for the patient, including mental strain and increased loss of function. Furthermore, it poses a significant burden on health systems. Current guidelines fail to use available data collected from patients (echo, temperature, CRP, leukocytes, procalcitonin etc.) to determine duration of treatment. A strategy including these data in treatment algorithms ensures an individualized treatment, targeting the patient's course and response to treatment. Thus, the purpose of this open-label, prospective, non-inferiority, RCT study is to investigate the safety and effectiveness of shortening treatment of endocarditis based on the individual patient's initial treatment response, sampling 750 patients, approx. 200 patients with each type of bacteria (Streptococci; Enterococcus faecalis; Staphylococcus aureus). Interim analysis will be conducted when 150 patients have been included, to assess the frequency of the event rate and inclusion rate in order to adjust the intended size of the study population.
The clinical trial is designed as a phase II, crossover clinical trial. It will be carried out in healthy volunteers, who will receive two different antibiotic regimen based on ceftriaxone. One of the regimens had shown clinical effectiveness in this scenario, but it is not suitable for OPAT programs. In the other hand, a new treatment schema useful in OPAT programs is proposed, but there is still a lack of pharmacokinetic data to support it. The plasma drug concentrations will be measured in both cases, comparing the minimal drug concentration observed and the pharmacokinetic profiles of the two regimens.
Primary objective: To describe the evolution of cerebral lesions in IE patients (number of patients with abnormal cerebral MRI in acute phase of IE and during follow-up).