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Prosthetic valve endocarditis due to Neisseria skkuensis, a novel Neisseria species.

ABSTRACT: We describe the first reported case of endocarditis due to Neisseria skkuensis. The organism from the blood cultures taken on admission day was identified initially as unidentified Gram-negative cocci by Vitek2. Finally, it was identified as Neisseria skkuensis by 16 rRNA gene sequence analysis.

SUBMITTER: Park SY

PROVIDER: S-EPMC3421520 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature

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Prosthetic valve endocarditis due to Neisseria skkuensis, a novel Neisseria species.

Park So Yeon SY Kang Seung Ji SJ Joo Eun-Jeong EJ Ha Young Eun YE Baek Jin Yang JY Wi Yu Mi YM Kang Cheol-In CI Chung Doo Ryeon DR Peck Kyong Ran KR Lee Nam Young NY Song Jae-Hoon JH

Journal of clinical microbiology 20120606 8

We describe the first reported case of endocarditis due to Neisseria skkuensis. The organism from the blood cultures taken on admission day was identified initially as unidentified Gram-negative cocci by Vitek2. Finally, it was identified as Neisseria skkuensis by 16 rRNA gene sequence analysis. ...[more]

PMID: 22675133

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Prosthetic valve endocarditis due to Propionibacterium acnes.

Project description:ObjectivesTo study the characteristics of patients with Propionibacterium acnes prosthetic valve endocarditis (PVE) who required surgery.MethodsA single-centre retrospective cohort study was conducted during a 7-year period. Patients with definite infective P. acnes endocarditis, according to the modified Duke criteria, were included. An extended culture protocol was applied. Information on medical health status, surgery, antibiotic treatment and mortality was obtained.ResultsThirteen patients fulfilled the criteria for P. acnes endocarditis (0.53% of 2466 patients with valve replacement in a 7-year period). All patients were male and had a previous valve replacement. The health status of patients was poor at diagnosis of P. acnes PVE. Most patients (11 of 13, 85%) were admitted with signs of heart failure due to a significant paravalvular leak; 2 of 13 (15%) patients presented with septic emboli. Twelve patients needed redo surgery, whereas one could be treated with antibiotic therapy only. The time between the index surgery and presentation with P. acnes PVE varied between 5 and 135 months (median 26.5 months). Replacement and reconstruction of the dysfunctional valve and affected anatomical structures was mainly performed with a mechanical valve (n = 5, 42%) or a (bio-) Bentall prosthesis (n = 6, 50%). Antibiotic therapy consisted of penicillin with or without rifampicin for 6 weeks after surgery. The mortality in this series was low (n = 1, 8%) and no recurrent endocarditis was found during a median follow-up of 38 months.ConclusionsPropionibacterium acnes PVE is a rare complication after valve surgery. Redo surgery is often required. Treatment of the dysfunctional prosthetic aortic valve most often consists of root replacement, in combination with antibiotic therapy.

| S-EPMC4986751 | biostudies-literature

Prosthetic mitral valve Aspergillus fumigatus endocarditis.

Project description:Aspergillus endocarditis is a fatal source of valvular infection with a near 100 % mortality rate if pharmacotherapy and valve-replacement surgery are not initiated swiftly after diagnosis. Complicating its diagnosis is the low yield for growth on standard blood culture and time requirements for molecular diagnostic tools to return a result. Aspergillus endocarditis of the mitral valve presents as valvular vegetations that reduce the caliber of the mitral valve and can cause syncope as in the case of mitral stenosis with subsequent valve failure, left atrial enlargement, and prospective cardiovascular failure. Reports of the management of Aspergillus endocarditis after serial mitral valve replacement are not prominent in the literature. We report the case of a 41-year-old female with previous mitral valve prosthesis who received a second prosthetic mitral valve after a syncopal episode. Vegetations resembling thrombi were noted on transesophageal echocardiogram, diagnosed as Aspergillus fumigatus endocarditis, and successfully treated with antifungal therapy in conjunction with removal of her dysfunctional prosthesis.

| S-EPMC7332524 | biostudies-literature

Fatal Prosthetic Valve Endocarditis Due to <i>Aspergillus flavus</i> in a Diabetic Patient.

Project description:Aspergillus endocarditis (AE) accounts for a-quarter of all fungal endocarditis, mainly in immunocompromised hosts prior to heart-valve surgery with high mortality, even with treatment. Herein, we report a rare case of AE in a diabetic 60-year-old woman with a history of redo mitral valve prosthesis suspecious of acute endocarditis. She underwent second redo surgical mitral valve replacement in combination with mechanical aortic valve replacement. Blood cultures were negative. The explanted valve and vegetation were subjected to identification. Grown colonies were identified as Aspergillus flavus, based on conventional and molecular methods. Despite the administration of liposomal amphotericin B and improvement in her general condition shortly after initiation of therapy, the patient passed away. As AE is a late consequence of redo prosthetic valve replacement, extended follow-up, early diagnosis, repeating valve-replacement surgeries, and timely selective antifungal treatments are warranted.

| S-EPMC7360421 | biostudies-literature

Endocarditis due to Neisseria bacilliformis in a patient with a bicuspid aortic valve.

Project description:We report a case of endocarditis due to the rod-shaped Neisseria species Neisseria bacilliformis. The phenotypic characterization of this recently characterized bacteria is difficult, and the identification requires the sequencing of the 16S rRNA gene. The resolution of the disease was complete after appropriate antibiotic therapy, and surgery was not required.

| S-EPMC2691068 | biostudies-literature

Relapse of Enterococcus hirae prosthetic valve endocarditis.

Project description:Enterococcus hirae, a gram-positive bacterium, is a rare isolate in clinical specimens. We report an unusual case of a relapse of prosthetic valve endocarditis due to E. hirae 6 months after the initial episode. Clonal relationship was proven by genomic analysis.

| S-EPMC3067697 | biostudies-literature

Prosthetic valve endocarditis caused by Pseudomonas luteola.

Project description:BACKGROUND: Pseudomonas luteola has been recognized as an uncommon cause of bacteremia and of infections in patients with underlying medical disorders. CASE PRESENTATION: We isolated P. luteola from blood cultures in a patient with prosthetic valve endocarditis developed 16 months after cardiac surgery. CONCLUSION: P. luteola is a rare opportunistic agent, with a propensity of infecting valvular prostheses.

| S-EPMC1274313 | biostudies-literature

Stenotrophomonas maltophilia prosthetic valve endocarditis: a case report.

Project description:IntroductionStenotrophomonas maltophilia is an environmental bacterium increasingly involved in nosocomial infections and resistant to most antibiotics. It is important to recognize and efficiently treat infections with this bacterium as soon as possible.Case presentationWe present a case of Stenotrophomonas maltophilia prosthetic valve endocarditis secondary to an indwelling catheter infection. The patient was cured without surgery. We review other cases of S. maltophilia endocarditis from the literature and describe the peculiarities of this case.ConclusionS. maltophilia endocarditis is a rare disease that is often hospital-acquired and related to an indwelling catheter infection. The high lethality is likely related to the intrinsic resistance of nosocomial bloodstream infections to commonly prescribed antibiotics.

| S-EPMC2432066 | biostudies-literature

Transillumination Rendering of a Prosthetic Mitral Valve Endocarditis.

Project description: Not available

| S-EPMC8129476 | biostudies-literature

<i>Cellulosimicrobium cellulans</i> aortic prosthetic valve endocarditis.

Project description:IntroductionInvasive infections due to Cellulosimicrobium spp. (a Gram-positive coryneform) are extremely rare. Only a few cases of bloodstream infections and endocarditis have been described, as bacteraemia due to coryneforms is usually discarded as blood culture contamination.Case presentationA 66-year-old female, with a history of aortic valve replacement, presented with fever, left leg purpura and acute kidney injury. Multiple repeated blood cultures were positive for Cellulosimicrobium cellulans , and targeted therapy was started. At first, endocarditis was excluded by echocardiograms, and the acute nephritis was interpreted as an atypical presentation of Henoch-Shönlein purpura. High-dose prednisone was started, and after 10 weeks the patient presented again with fever, mental confusion and acute left arm ischaemia. A subsequent echocardiogram and radiolabelled leukocyte scintigraphic evaluation revealed aortic prosthetic valve endocarditis with periprosthetic abscess and arterial brachial thrombosis. The patient deceased, and the autoptic examination confirmed an aortic valve periprosthetic abscess and revealed multiple arterial thromboses and septic embolisms in the kidneys, brain, spleen and myocardium.ConclusionIsolation of coryneform bacteria on blood culture should not always be discarded as blood culture contamination. In the case of endocarditis due to Cellulosimicrobium spp., the removal of any prosthetic material, along with prolonged in vitro active antimicrobial therapy, should be pursued in order to reduce persistence or relapses of infection.

| S-EPMC7491936 | biostudies-literature

Native valve endocarditis due to a novel strain of Legionella.

Project description:Legionellae are Gram-negative bacteria which are capable of causing disease, most commonly in the form of pneumonia. We describe a case of native valve endocarditis caused by a Legionella strain which by genotypic (16S rRNA and mip gene sequencing) and phenotypic analyses is unlike previously described strains of Legionella.

| S-EPMC3165573 | biostudies-literature

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