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PubMedDate not supplied

[Bacterial endocarditis on prosthetic valves].

Bacterial endocarditis is a rare, but often lethal, complication of cardiac valve replacement. The endocarditis is called "early" when it occurs within 2 months of the operation, and "late" when it develops after that period. Contamination of the prosthesis with bacteria may occur intra-operatively or post-operatively. The clinical diagnosis is often difficult in early endocarditis when another focus of infection is present and in late endocarditis in the absence of fever and positive blood cultures. Isolation of the pathogen from blood cultures is essential to the diagnosis and treatment. Therapeutic surgery now has wider indications than formerly. The incidence of this dangerous complication can only be reduced by well-planned and well executed prophylactic measures.

Anti-Bacterial Agents↗
PubMed2000

The surgical management of bacterial valvular endocarditis.

Bacterial endocarditis is an important cause of cardiac valvular problems. The diagnosis of bacterial endocarditis can be difficult, and, often, an aggressive clinical evaluation including serial blood cultures is necessary. The pathophysiology of endocarditis is changing with the rise of intravenous drug use; staphylococci are an increasingly common cause. Endocarditis often warrants surgical intervention. Operations for bacterial endocarditis range from valve repair to valve replacement to homograft replacement. The operations are technically challenging, but new methods of myocardial protection have markedly improved the surgical outcomes. Valve excision is an option for intravenous drug users with tricuspid valve endocarditis. Surgical management of endocarditis is a technically challenging but rewarding procedure that should be offered to appropriate patients.

Debridement↗
PubMedDate not supplied

Antibiotic prophylaxis in a patient with penicillin allergy and recurrent bacterial endocarditis: a case report.

Bacterial endocarditis (BE) is a rare and life-threatening heart infection that can be caused by oral microorganisms. Patients with specific cardiac valvular abnormalities as well as those with a history of recurrent episodes of endocarditis are considered to be at high-risk for developing BE. Antibiotic prophylaxis is recommended for high-risk individuals when bleeding is anticipated during dental procedures. Penicillins are the antibiotics of choice in preventing endocarditis, while other medications are indicated for patients with penicillin allergies. This case presentation outlines antibiotic prophylaxis prior to restorative care for a 44-year-old man who had a prosthetic heart valve, history of recurrent infective endocarditis and penicillin allergy. Intravenously administered vancomycin and gentamicin were prescribed due to the patients' level of risk and bleeding propensity. This article was written to raise the awareness of dental practitioners to the antibiotic prophylaxis options available for the treatment of patients with cardiac and associated systemic conditions.

Adult↗
PubMed1998

Predictors of prognosis and risk of acute renal failure in bacterial endocarditis.

BACKGROUND: The epidemiology, criteria for diagnosis and treatment of bacterial endocarditis has changed substantially in the past 2 decades, yet little attention has been given to the changing etiologies of renal insufficiency and the predictors of renal failure or the relationship between renal failure and mortality in patients with bacterial endocarditis. OBJECTIVE: To study the risk factors for the development of acute renal failure and death among patients with definite bacterial endocarditis. SETTING: Tertiary referral university medical center. METHODS: Retrospective chart review of 204 consecutive episodes of definite bacterial endocarditis as defined by the Duke criteria. Logistic regression was used to identify clinical and biochemical predictors of death and the development of acute renal failure. RESULTS: Two hundred and four episodes of endocarditis identified in 185 patients were evaluated. The overall mortality for the group was 20%. The presence of prosthetic valve endocarditis and thrombocytopenia was associated with increased risk of death in hospital. One third of the patients developed acute renal failure (defined as a serum Cr of 2 mg/dl or above). The presence of acute renal failure increased the odds (OR) of dying by 5 (p = 0.0001). Clinical and biochemical variables at presentation that were significantly associated by univariate analysis with the risk of developing acute renal failure were: increased age, a history of hypertension, thrombocytopenia, the presence of Staphylococcus aureus, and prosthetic valve infection. Age (OR 2.9, p = 0.002) and the degree of thrombocytopenia (OR 0.2, p = 0.0001) were independently associated with an increased risk of developing acute renal failure. Patients who developed acute renal failure as a result of septic syndrome or following cardiac surgery had a higher mortality when compared to other causes of acute renal failure. CONCLUSION: Acute renal failure associated with bacterial endocarditis remains a frequent clinical problem that is often associated with a fatal outcome. Patients with increased age, and the degree of thrombocytopenia were independent risk factors for developing acute renal failure.

Acute Kidney Injury↗
PubMed1976

Bacterial endocarditis in pregnancy: successful surgical correction.

Bacterial endocarditis, an extremely rare and serious complication during pregnancy, is almost always fatal to the fetus. This paper describes successful aortic valve replacement in a woman who was 22 weeks' pregnant. She had acute bacterial endocarditis with aortic insufficiency and severe congestive heart failure. At term, she was delivered of a live infant. We believe this is the first case of a fetus surviving such a complication.

Adult↗
PubMed1986

[Rheumatic masking of bacterial endocarditis].

In 36 patients with bacterial endocarditis (BE) rheumatic symptoms were detected in 61.1%. Arthralgias and arthritides having some distinctive features typical of this disease, myalgia, rheumatoid factor and LE cells (less frequently) were observed in the overwhelming majority of the patients. The authors described 3 cases where rheumatic symptoms obscured a clinical picture of BE for a long time resulting in late diagnosis and inadequate therapy.

Adolescent↗
PubMed1991

Perivalvular pseudoaneurysm complicating bacterial endocarditis: MR detection in five cases.

Bacterial endocarditis usually affects the valve leaflets, but erosion into the valve anulus and adjacent myocardium may form a myocardial abscess. Perivalvular abscesses can drain into the ventricles or aorta, forming a life-threatening pseudoaneurysm. We reviewed our experience with cardiac MR imaging of this disorder. Fourteen patients with complicated bacterial endocarditis underwent ECG-gated spin-echo cardiac MR imaging in addition to conventional duplex two-dimensional echocardiography (2-D echo). Angiography was performed in seven patients, six of whom underwent surgery for valve replacement. MR imaging detected the pseudoaneurysms in all five of the surgically proved cases, while 2-D echo detected only three. Clinical follow-up suggested there were no false-negative examinations, but no autopsy data were available for confirmation. Postoperative MR imaging studies were conducted in three patients, revealing two recurrent pseudoaneurysms and one thrombosed aneurysm. Cardiac MR imaging provides useful pre- and postoperative information in patients with perivalvular pseudoaneurysms due to endocarditis.

Aneurysm, Infected↗