Abstract
Purpose
During the last decade, the incidence of anaerobic bacteremia (AB) has been increasing. Patients with AB may develop complex underlying diseases, which can occasionally be accompanied by fatal or fulminant outcomes. However, the risk factors for AB-related mortality remain unclear. Herein, we sought to elucidate the risk factors for AB-related mortality.
Methods
In this multicenter, retrospective, observational study, we enrolled patients with culture-proven AB from six tertiary hospitals in Japan, between January 2012 and December 2021. Data on patient and infection characteristics, laboratory findings, treatment, and outcome were collected, and their associations with mortality were analyzed.
Results
A total of 520 participants were included. The 30-day mortality in the study cohort was 14.0% (73 patients), and malignant tumors were frequently observed comorbidities in 48% of the entire cohort. Multivariable logistic regression analysis showed a Charlson comorbidity score of > 6, serum creatinine level of > 1.17 mg/dL, and hypotension to be independent risk factors for 30-day mortality in AB (odds ratios [ORs] 2.12, 2.25, and 5.12, respectively; p < 0.05), whereas drainage significantly reduced this risk (OR, 0.28; p < 0.0001). Twelve patients (2.3% of the whole cohort and 16.4% of the deceased patients) presented with extremely rapid progression leading to fatal outcome, consistent with “fulminant AB.”
Conclusions
This study identified acute circulatory dysfunction and performance of drainage as independent predictive factors for 30-day AB-related mortality and revealed the existence of a fulminant AB sub-phenotype. Our findings could serve as a practical guide to predict the clinical outcomes of AB.
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
References
Gajdács M, Urbán E (2020) Relevance of anaerobic bacteremia in adult patients: a never-ending story? Eur J Microbiol Immunol 10(2):64–75
Brook I (2012) Anaerobic bacteria in upper respiratory tract and head and neck infections: microbiology and treatment. Anaerobe 18(2):214–220
Bouza E, Reig M, Garcia de la Torre M, Rodríguez-Créixems M, Romero J, Cercenado E et al (1985) Retrospective analysis of two hundred and twelve cases of bacteremia due to anaerobic microorganisms. Eur J Clin Microbiol 4(3):262–267
Brook I (2010) The role of anaerobic bacteria in bacteremia. Anaerobe 16(3):183–189
Urbán E (2012) Five-year retrospective epidemiological survey of anaerobic bacteraemia in a university hospital and review of the literature. Eur J Microbiol Immunol 2(2):140–147
Lassmann B, Gustafson DR, Wood CM, Rosenblatt JE (2007) Reemergence of anaerobic bacteremia. Clin Infect Dis 44(7):895–900
Zouggari Y, Lelubre C, Lali SE, Cherifi S (2022) Epidemiology and outcome of anaerobic bacteremia in a tertiary hospital. Eur J Intern Med 105:63–68
Vena A, Muñoz P, Alcalá L, Fernandez-Cruz A, Sanchez C, Valerio M et al (2015) Are incidence and epidemiology of anaerobic bacteremia really changing? Eur J Clin Microbiol Infect Dis 34(8):1621–1629
Cobo F, Aliaga L, Expósito-Ruiz M, Navarro-Marí JM (2020) Anaerobic bacteraemia: a score predicting mortality. Anaerobe 64:102219
Blairon L, De Gheldre Y, Delaere B, Sonet A, Bosly A, Glupczynski Y (2006) A 62-month retrospective epidemiological survey of anaerobic bacteraemia in a university hospital. Clin Microbiol Infect 12(6):527–532
Umemura T, Hamada Y, Yamagishi Y, Suematsu H, Mikamo H (2016) Clinical characteristics associated with mortality of patients with anaerobic bacteremia. Anaerobe 39:45–50
Kovács K, Nyul A, Lutz Z, Mestyán G, Gajdács M, Urbán E et al (2022) Incidence and clinical characteristics of anaerobic bacteremia at a University Hospital in Hungary: a 5-year retrospective observational study. Antibiotics (Basel) 11(10):1326
Tan TY, Ng LS, Kwang LL, Rao S, Eng LC (2017) Clinical characteristics and antimicrobial susceptibilities of anaerobic bacteremia in an acute care hospital. Anaerobe 43:69–74
Goldstein EJ (1996) Anaerobic bacteremia. Clin Infect Dis 23(Suppl 1):S97-101
Giamarellou H (2000) Anaerobic infection therapy. Int J Antimicrob Agents 16(3):341–346
Suzaki A, Hayakawa S (2023) Clinical and microbiological features of fulminant Haemolysis caused by Clostridium perfringens bacteraemia: unknown pathogenesis. Microorganisms 11(4):824
Suzaki A, Ohtani K, Komine-Aizawa S, Matsumoto A, Kamiya S, Hayakawa S (2021) Pathogenic characterization of Clostridium perfringens strains isolated from patients with massive intravascular hemolysis. Front Microbiol 12:713509
Mirza NN, McCloud JM, Cheetham MJ (2009) Clostridium septicum sepsis and colorectal cancer - a reminder. World J Surg Oncol 7:73
King M, Hurley H, Davidson KR, Dempsey EC, Barron MA, Chan ED et al (2020) The link between Fusobacteria and colon cancer: a fulminant example and review of the evidence. Immune Netw 20(4):e30
Tsai YT, Lee KM, Lu PL, Hsieh MH, Chen TC, Chen YH et al (2021) First case report of Anaerobiospirillum succiniciproducens bacteremia in an HIV-infected patient in Taiwan - Molecular identification from a positive blood culture bottle. Anaerobe 69:102327
Quan H, Li B, Couris CM, Fushimi K, Graham P, Hider P et al (2011) Updating and validating the Charlson comorbidity index and score for risk adjustment in hospital discharge abstracts using data from 6 countries. Am J Epidemiol 173(6):676–682
Singer M, Deutschman CS, Seymour CW, Shankar-Hari M, Annane D, Bauer M et al (2016) The third international consensus definitions for sepsis and septic shock (Sepsis-3). JAMA 315(8):801–810
Ferreira FL, Bota DP, Bross A, Mélot C, Vincent JL (2001) Serial evaluation of the SOFA score to predict outcome in critically ill patients. JAMA 286(14):1754–1758
Stabler S, Titécat M, Duployez C, Wallet F, Loïez C, Bortolotti P et al (2020) Clinical relevance of Clostridium bacteremia: an 8-year retrospective study. Anaerobe 63:102202
Gillet Y, Henry T, Vandenesch F (2018) Fulminant staphylococcal infections. Microbiol Spectr 6(5). https://doi.org/10.1128/microbiolspec.GPP3-0036-2018
Chuang YY, Huang YC, Lin TY (2005) Toxic shock syndrome in children: epidemiology, pathogenesis, and management. Paediatr Drugs 7(1):11–25
Hoge CW, Schwartz B, Talkington DF, Breiman RF, MacNeill EM, Englender SJ (1993) The changing epidemiology of invasive group A streptococcal infections and the emergence of streptococcal toxic shock-like syndrome. A retrospective population-based study. JAMA 269(3):384–389
Kumamoto KS, Vukich DJ (1998) Clinical infections of Vibrio vulnificus: a case report and review of the literature. J Emerg Med 16(1):61–66
Bisharat N, Omari H, Lavi I, Raz R (2001) Risk of infection and death among post-splenectomy patients. J Infect 43(3):182–186
Storm JC, Ford BA, Streit JA (2013) Myocardial infection due to Fusobacterium nucleatum. Diagn Microbiol Infect Dis 77(4):373–375
Akagi Fukushima E, Bhargava A (2021) Unusual case of necrotizing pneumonia caused by Fusobacterium nucleatum complicating influenza a virus infection. Anaerobe 69:102342
Esaiassen E, Hjerde E, Cavanagh JP, Simonsen GS, Klingenberg C, Norwegian Study Group on Invasive Bifidobacterial Infections (2017) Bifidobacterium bacteremia: clinical characteristics and a genomic approach to assess pathogenicity. J Clin Microbiol 55(7):2234–2248
Boman J, Nilson B, Sunnerhagen T, Rasmussen M (2022) True infection or contamination in patients with positive Cutibacterium blood cultures-a retrospective cohort study. Eur J Clin Microbiol Infect Dis 41(7):1029–1037
Kullar R, Goldstein EJC, Johnson S, McFarland LV (2023) Lactobacillus bacteremia and probiotics: a review. Microorganisms 11(4):896
Acknowledgements
We thank Tanaka Kaori, Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan, for her help on classification of anaerobes.
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Conceptualization, Nagaoka. K. and Yamamoto. Y.; methodology, Nagaoka. K.; software, Nagaoka. K.; validation, Nagaoka. K. and Iwanaga. N.; formal analysis, Nagaoka. K with support from Sugano A.; investigation, Nagaoka K., Iwanaga N, Takegoshi Y, Murai Y, Kawasuji H, Miura M, Sato Y, Hatakeyama Y, Kato Y, Shibayama N, Kosai K.; resources, Nagaoka K. and Yamamoto Y.; data curation, Nagaoka K. and Iwanaga N.; writing—original draft preparation, Nagaoka K.; writing—review and editing, Nagaoka K., Sugano A., Morinaga Y. and Yamamoto Y.; visualization, Nagaoka K.; supervision, Morinaga Y. and Yamamoto Y.; project administration, Miura M., Sato Y., Ito H., Terasaki T., Fujimura T., Takazono T., Yanagihara K., Mukae H., and Yamamoto Y. All authors have read and agreed to the published version of the manuscript.
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This study had been approved by the Ethical Review Board of the University of Toyama (R2022085), and written informed consent was waived owing to the nature of the study design.
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Nagaoka, K., Iwanaga, N., Takegoshi, Y. et al. Mortality risk factors and fulminant sub-phenotype in anaerobic bacteremia: a 10-year retrospective, multicenter, observational cohort study. Eur J Clin Microbiol Infect Dis 43, 459–467 (2024). https://doi.org/10.1007/s10096-023-04743-1
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DOI: https://doi.org/10.1007/s10096-023-04743-1