Active clinical trials for "Endocarditis, Bacterial"

Acute kidney injury is major complication after open heart surgery. The cause of acute kidney injury following open heart surgery is related to activation of sympathetic nervous system, decrease of renal blood flow, ischemia-reperfusion injury and systemic inflammatory response. Infective endocarditis patients undergoing open heart surgery have systemic inflammatory response associated with infective endocarditis. And the inflammatory response can be aggravated by cardiopulmonary bypass. The incidence of acute kidney injury following open heart surgery due to infective endocarditis was 50% in a previous report. And this acute kidney injury was related to the poor outcome and high mortality. Thus, the preventive method to protect kidney function will be needed in the patients with infective endocarditis undergoing open heart surgery. Dexmedetomidine is a selective α2-agonist and has sedative, analgesic, and CNS depressive effect. And several experimental study demonstrated the renal protective effect. Intraoperative dexmedetomidine administration can reduce the amount of anesthetics needed and suppress the sympathetic response resulted by surgical stimulation. And dexmedetomidine was reported to reduce the level of serum cortisol, epinephrine and norepinephrine during the operation. Thus, these effects of dexmedetomidine can be expected to reduce the incidence of acute kidney injury. Therefore, the investigators hypothesized that dexmedetomidine has renal protective effect and this effect might be related to the suppression of inflammatory response. Thus, the investigators will evaluate the incidence of acute kidney injury and the incidence of major adverse kidney events (MAKE) after open heart surgery due to infective endocarditis and the level of inflammatory mediators. The primary end point of this study is the incidence of acute kidney injury after open heart surgery due to infective endocarditis. And secondary end point is the incidence of MAKE, the level of cystatin C which is related to the renal function, the level of inflammatory mediator and the postoperative morbidities.

To evaluate the performance of a single high volume blood culture sampling strategy versus the actually used multiple sampling strategy for the diagnosis and categorization of infective endocarditis according to the Duke-Li classification in a Population of adults suspected of infective endocarditis.

The diagnosis of infective endocarditis is based on the results of blood culture and findings on transeosophageal echocardiography. Cardiac computarized tomography is a new modality, mainly used for the imaging of coronary arteries. Its use in the diagnosis of infective endocarditis is not well known.The purpose of this study is to establish the use of cardiac CT in infective endocarditis.

This study aims at studying the frequency of infective endocarditis after transcatheter aortic valve replacement/implantation

The hypothesis underlying this work is the identification of different sub phenotypes of patients with infective endocarditis through the study of the host's response to infection. Furthemore, metagenomic sequencing may be a helpful supplement to IE diagnostic, especially when conventional tests fail to yield a diagnosis.

the aim of this study is to investigate the role of staphylokinase, streptokinase and MMP activation in invasive staphylococcal and streptococcal infections.

The investigators conduct a prospective observational study on consecutive patients being admitted to a tertiary care-centre with infective endocarditis. The investigators' primary aim is to identify baseline clincal, laboratory and microbiological predictors of in-hospital events, mortality and 6-month mortality.

The infectious endocarditis is a grave infection the incidence of which is at present esteemed at 30-100 episodes by million inhabitants a year. This infection is marked with a heavy morbi-mortality.Preliminary studies seem to show an abnormally high death rate at the patients presenting an infectious endocarditis to streptococci with an inhibitive minimal concentration raised to the amoxicilline. The aim of the study is to describe the epidemiology and the clinical presentations of the patients presenting an endocarditis to streptococci

This was a retrospective observational study of consecutive cases of definite or possible infective endocarditis (IE) as per the modified Duke criteria between January 2008 and December 2015, which was performed at the Second Affiliated Hospital of Zhejiang University, School of medicine (SAHZU), a tertiary care referral hospital located in East China.

Infective endocarditis is a potentially lethal disease that has undergone major changes over the last decades. The Duke Criteria are recommended for evaluation of probability of presence of infective endocarditis by current ESC guidelines. However, since the introduction of Duke criteria in 1994, characteristics of patients presenting with potential infective endocarditis have substantially changed, especially in tertiary care facilities, towards a high proportion of patients with immune deficiency (caused by illness or medically induced), critically ill patients, patients with prosthetic valves and patients with long-lasting intensive care treatment. Likewise, with the increasing interventional therapy of structural heart disease and device implantation in older and multi-morbid patient cohorts, the frequency of endocarditis on prosthetic material and devices increased over the last decades. While Duke criteria overall misclassify a substantial proportion of patients with endocarditis, Duke criteria are difficult to apply in these patients because of lower sensitivity. Therefore, several modifications of the Duke criteria have been proposed. In addition, the uncertainty regarding potential infective endocarditis of treating physicians due to clinical characteristics of their patients leads to an increase in requests for transthoracic and transesophageal echocardiography, overcoming echocardiography laboratories. In the present study the investigators aim to identify (I) the precision of the Duke score in predicting presence of infective endocarditis in patients examined at the echocardiography laboratory of the West German Heart Center (II) determine characteristics, not including echocardiography that are associated with increased risk of infective endocarditis, justifying transesophageal echocardiography examination and (III) establish scoring algorithms to help treating physicians to assess the risk of endocarditis in severely diseased patient cohorts prior to echocardiography examinations and to avoid unnecessary echo exams.