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  • Title: Epidemiology and the prognosis of healthcare-associated infective endocarditis in China: the significance of non-nosocomial acquisition.
    Author: Yang F, Zhang B, Yu J, Shao L, Zhou P, Zhu L, Chen S, Zhang W, Weng X, Zhang J, Huang Y.
    Journal: Emerg Microbes Infect; 2015 Jul; 4(7):e38. PubMed ID: 26251828.
    Abstract:
    Limited research has been conducted on healthcare-associated infective endocarditis (HAIE), although it is of increasing importance. The aim of this study is to compare the epidemiology, clinical characteristics, and prognosis of community-acquired IE (CA-IE) with HAIE and non-nosocomial healthcare-associated IE (NNHCA-IE). A retrospective, consecutive case-series analysis was organized and performed during the 20-year study period in Huashan Hospital, Shanghai, China. A total of 154 patients were enrolled, including 126 (81.8%) who had CA-IE and 28 (18.2%) who had HAIE, among whom 20 (71.4%) had non-nosocomial IE. Patients with HAIE compared to patients with CA-IE had poorer clinical conditions (Charlson comorbidity index ≥2: 35.7% vs. 15.1%, P = 0.012; immunosuppressive therapy: 21.4% vs. 4.0%, P = 0.005), underwent more prosthetic valve replacement (35.7% vs. 7.1%, P <0.001), had less streptococcus infection (16.7% vs. 51.1%, P = 0.007) but more atypical bacterial infection (50.0% vs. 21.1%, P = 0.017) and poorer outcomes (17.9% vs. 4.0%, P = 0.019). It is noteworthy that the results were quite similar between the comparison of patients with NNHCA-IE and those with CA-IE. Overall, in-hospital mortality was 6.5%. The IE acquisition site and low serum albumin levels (odds ratio (OR): 0.8; P = 0.04) were significantly associated with an increased risk of mortality. Nosocomial IE patients had an 8.3-fold and NNHCA-IE patients had 6.5-fold increase in the risk of mortality compared to CA-IE patients. In conclusion, HAIE and NNHCA-IE have important epidemiological and prognostic implications. Because NNHCA-IE usually occurs in patients residing in the community, it is suggested that these patients should be identified and treated by the community primary care clinical staff as early as possible.
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