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Results for “ENDOCARDITIS, INFECTIOUS”

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At least 973 records · Page 54Linked to original sources
PubMed1995

Identification of Bartonella (Rochalimaea) species among fastidious gram-negative bacteria on the basis of the partial sequence of the citrate-synthase gene.

The bacterial genus Bartonella (Rochalimaea) includes emerging human pathogens with five recognized species. These are fastidious gram-negative bacteria, exhibiting few phenotypic characteristics and whose identification relies upon serotyping, cellular fatty acid analysis, and molecular typing. Most of the isolates have been recovered from the blood of patients, and three of the four pathogenic Bartonella species are associated with infectious endocarditis. We performed PCR-restriction fragment length polymorphism (RFLP) analysis of the blood culture bottle supernatant for the routine identification of Bartonella species among fastidious gram-negative bacteria. The amplification of the citrate-synthase gene with primers previously reported (R. L. Regnery, C. L. Spruill, and B. D. Plikaytis, J. Bacteriol. 173:1576-1589, 1991) yielded a 379-bp product from Bartonella species and a 382-bp product for Capnocytophaga ochracea but no product from any of the other 15 genotypically or phenotypically related species tested. We determined the sequences of the citrate-synthase gene-amplified products for Bartonella species and C. ochracea in order to predict the optimal restriction enzyme to be used in RFLP analysis. TaqI and AciI allowed identification of Bartonella species and C. ochracea. We propose that acridine orange and Gram staining, followed by PCR-RFLP analysis of the blood bottle supernatant, be included in the examination of blood samples from patients with suspected infectious endocarditis.

Bartonella↗
PubMed1995

Acute infectious mitroaortic endocarditis in association with acute aortic dissection. Surgical management of an unusual combination of diseases.

A 58-year-old man with acute mitral and aortic endocarditis suffered an acute ascending aortic dissection. The patient had a double valve replacement, combined with replacement of the ascending aorta with a Dacron graft and sealing and closure of the proximal and distal aortic segments with surgical glue. Six months after the operation the patient is doing well with normal function of both valve prostheses and aortic vascular graft.

Acute Disease↗
PubMed2001

[Infectious mitral endocarditis after radiofrequency catheter ablation of a left lateral accessory pathway].

A 2-years-old child with Wolff-Parkinson-White syndrome associated with life-threatening symptoms underwent radiofrequency ablation of a left lateral accessory pathway. A deflectable 5F bipolar electrode catheter positioned above the atrioventricular groove by transeptal approach was used for ablation. The catheters were repeatedly used after ethylene oxide sterilisation. Although immediate post-ablation echocardiography demonstrated no complications, the patient was readmitted two days later with fever and a new mitral murmur. Penicillin-susceptible Staphylococcus aureus was isolated and intravenous antibiotics were administered. In the following weeks, the patient developed constrictive pericarditis requiring surgical treatment and acute hemiplegia caused by brain embolism arising from valvular vegetation. At 5 years of follow-up the patient presents residual hemiparesia and grade II/IV mitral insufficiency.

Atrioventricular Node↗
PubMedDate not supplied

[Infectious Brucella endocarditis in a case of corrected transposition of the great arteries].

We describe a case of a 14 year old male who developed infections endocarditis due to Brucella sp. He had a corrected transposition of great vessels with valvular pulmonary stenosis and mitral insufficiency. Vegetations were demonstrated by echocardiogram on the pulmonary valve as well as on left atrioventricular valve. He had also proliferative nephritis. Prolonged antimicrobial treatment results in complete healing. Because the rarity of this association we inform this observation.

Adolescent↗
PubMedDate not supplied

Limited reliability of the "negative" two-dimensional echocardiogram in the evaluation of infectious vegetative endocarditis: diagnostic and surgical implications.

Three patients with vegetative endocarditis involving a native valve, a mechanical prosthesis and a bioprosthetic valve respectively are presented. Each underwent emergency surgical exploration and prosthetic valve replacement based on clinical evidence of vegetative endocarditis after an initial delay following a report of a negative two-dimensional echocardiographic study. These cases emphasize the fact that within the clinical setting in which vegetative endocarditis is strongly suspected a negative two-dimensional echocardiographic study must be interpreted with caution. This is particularly true in patients with fungal, embolic or prosthetic valvular endocarditis. A decision to delay surgical consultation and therapy based upon a negative two-dimensional echocardiographic study in these patients is ill advised and may result in serious thromboembolic complications or even death.

Aged↗
PubMed1983

[Bacteriologic study of 125 cases of infectious streptococcal endocarditis].

Streptococci remain the bacterial group the most frequently associated with microbial endocarditis. This paper points out the ability of the different species to cause endocarditis. 128 streptococci are isolated from patients with microbial endocarditis (127 from blood cultures, 1 from a valve). Isolates are speciated by biochemical tests and the determination of their group antigen. The viridans streptococci most frequently isolated are S. sanguis I (27 p. cent), S. mitis (16,5 p. cent) and S. sanguis II (9,6 p cent). A comparative survey of the results is rather difficult due to the methodological and taxonomical divergences.

Endocarditis, Bacterial↗
PubMedDate not supplied

Methicillin-resistant Staphylococcus aureus endocarditis following repair of tetralogy of Fallot.

Infectious endocarditis following cardiac surgery, particularly that caused by methicillin-resistant Staphylococcus, aureus is a rare and highly lethal complication. We report a case of a 2-year-old girl who developed methicillin-resistant S. aureus endocarditis and mediastinitis following the intracardiac repair of tetralogy of Fallot using Dacron patches. The patient enveloped severe bacteremia accompanied by disseminated intravascular coagulation and progressive enlargement of vegetation. Despite this condition, the patient was successfully treated by repair using double autogenous pericardial patches. Aggressive removal of foreign material and replacement with autogenous tissue resulted in a favorable outcome.

Child, Preschool↗
PubMed1999

[Infective endocarditis].

Two different series of patients with Infectious Endocarditis (IE), hospitalized in the same ward of Curry Cabral Hospital in Lisbon, are presented and compared. The two series were separated by a ten-year period--the first included patients observed from 1970 to 1976 and the second from 1988 to 1998. In the first series (20 patients), IE occurred mainly in patients with previous cardiac valvular lesion, the course was subacute and Streptococcus viridans was the predominant agent. In the last series (65 patients), most of the patients were young and had no previous valvular lesions. Right side endocarditis predominated and the course was acute. Most of patients were drug addicts and had HIV infection. Staphylococcus aureus was the predominant agent. The ages of the two series were significantly different (p < 0.005). The diagnostic value of transthoracic and transesophageal echocardiography is stressed. The details of the evolution of patients with HIV infection are presented according to the values of CD4+ lymphocyte counts. The relatively good prognosis of IE in drug addicts with antibiotic treatment, even with HIV infection, is emphasized.

Adult↗