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Cardiobacterium hominis endocarditis complicated by aortic root abscess: a case report.

ABSTRACT: The present report describes a case of infective endocarditis complicated with aortic root abscess caused by Cardiobacterium hominis in a 56-year-old man. C. hominis is a microaerophilic, pleomorphic Gram-negative bacillus and member of the Haemophilus species, Aggregatibacter actinomycetemcomitans , C. hominis , Eikenella corrodens and Kingella kingae (HACEK) group, a group of bacteria known to be a rare cause of endocarditis. With prompt diagnosis and initiation of antimicrobial and surgical management, a successful outcome was achieved.

SUBMITTER: Holden R

PROVIDER: S-EPMC7472547 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Cardiobacterium hominis endocarditis complicated by aortic root abscess: a case report.

Holden Robert R Lewkenbandara Rashmi R Pasztor Monika M Okonkwo Ekene Kenneth EK

Access microbiology 20190806 9

The present report describes a case of infective endocarditis complicated with aortic root abscess caused by Cardiobacterium hominis in a 56-year-old man. C. hominis is a microaerophilic, pleomorphic Gram-negative bacillus and member of the Haemophilus species, Aggregatibacter actinomycetemcomitans , C. hominis , Eikenella corrodens and Kingella kingae (HACEK) group, a group of bacteria known to be a rare cause of endocarditis. With prompt diagnos ...[more]

PMID: 32974556

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Project description:Locally destructive infective endocarditis (IE) of the aortic valve complicated by abscess formation in the aortic root may seriously affect patients' outcomes. Surgical repair of such conditions is often challenging. This is a single-center observational analysis of consecutive patients treated surgically for IE between 2009 and 2019. We divided the cohort into two groups considering the presence of an aortic root abscess and compared the characteristics and postoperative outcomes of patients accordingly. Moreover, we examined three different procedures performed in abscess patients regarding operative data and postoperative results: an isolated surgical aortic valve replacement (AVR), AVR with patch reconstruction of the aortic root (AVR + RR) or the Bentall procedure. The whole cohort comprised 665 patients, including 140 (21.0%) patients with an aortic root abscess and 525 (78.9%) as the control group. The abscess group of patients received either AVR (66.4%), AVR + RR (17.8%), or the Bentall procedure (15.7%). The mean age in the whole cohort was 62.1 ± 14.8. The mean EuroSCORE II was 8.0 ± 3.5 in the abscess group and 8.4 ± 3.7 in the control group (p = 0.259). The 30-day and 1-year mortality rates were 19.6% vs. 11.3% (p = 0.009) and 40.1% vs. 29.6% (p = 0.016) in the abscess compared to the control group. The multivariable regression analysis did not reveal aortic root abscess as an independent predictor of mortality. Rather, age > 60 correlated with 30-day mortality and infection with Streptococcus spp. correlated with 1-year mortality. In the analysis according to the performed procedures, KM estimates exhibited comparable long-term survival (log-rank p = 0.325). IE recurrence was noticed in 12.3% of patients after AVR, 26.7% after AVR + RR and none after Bentall (p = 0.069). We concluded that patients with an aortic root abscess suffer worse short and long-term outcomes compared to other IE patients. The post-procedural survival among ARA patients did not significantly vary based on the procedures performed.

Dataset Information

Cardiobacterium hominis endocarditis complicated by aortic root abscess: a case report.

Publications

<i>Cardiobacterium hominis</i> endocarditis complicated by aortic root abscess: a case report.

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