Non-HACEK Gram-Negative Bacillus Endocarditis
- 18 December 2007
- journal article
- Published by American College of Physicians in Annals of Internal Medicine
- Vol. 147 (12), 829-835
- https://doi.org/10.7326/0003-4819-147-12-200712180-00002
Abstract
Infective endocarditis caused by non-HACEK (species other than Haemophilus species, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, or Kingella species) gram-negative bacilli is rare, is poorly characterized, and is commonly considered to be primarily a disease of injection drug users. To describe the clinical characteristics and outcomes of patients with non-HACEK gram-negative bacillus endocarditis in a large, international, contemporary cohort of patients. Observations from the International Collaboration on Infective Endocarditis Prospective Cohort Study (ICE-PCS) database. 61 hospitals in 28 countries. Hospitalized patients with definite endocarditis. Characteristics of non-HACEK gram-negative bacillus endocarditis cases were described and compared with those due to other pathogens. Among the 2761 case-patients with definite endocarditis enrolled in ICE-PCS, 49 (1.8%) had endocarditis (20 native valve, 29 prosthetic valve or device) due to non-HACEK, gram-negative bacilli. Escherichia coli (14 patients [29%]) and Pseudomonas aeruginosa (11 patients [22%]) were the most common pathogens. Most patients (57%) with non-HACEK gram-negative bacillus endocarditis had health care–associated infection, whereas injection drug use was rare (4%). Implanted endovascular devices were frequently associated with non-HACEK gram-negative bacillus endocarditis compared with other causes of endocarditis (29% vs. 11%; P < 0.001). The in-hospital mortality rate of patients with endocarditis due to non-HACEK gram-negative bacilli was high (24%) despite high rates of cardiac surgery (51%). Because of the small number of patients with non-HACEK gram-negative bacillus endocarditis in each treatment group and the lack of long-term follow-up, strong treatment recommendations are difficult to make. In this large, prospective, multinational cohort, more than one half of all cases of non-HACEK gram-negative bacillus endocarditis were associated with health care contact. Non-HACEK gram-negative bacillus endocarditis is not primarily a disease of injection drug users.Keywords
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